Download - 2012 - projects.ics.forth.gr · railway traction, and cooperative vehicle systems that promise improved accessibility, fewer traffic jams and lower fuel consumption. We are also commercia-lising

2012

Idea Generation

3D printing at nanoscale

Cruising on electrical roads

Pushing back againstcyber-attacks

Changing the world with big data

4 kth School of Electrical Engineering 2012 kth School of Electrical Engineering 2012 5

a word from the dean tatatiur | safety

Creating a sustainable future through eleCtriCal engineering

Professor Stefan Östlund, Dean, School of Electrical Engineering.

contents

04 A word from the Dean 05 Table of contents

i n f r a st r u c t u r e 06 Cyber-security for critical infrastructure

acc e s s C e n t r e 08 The Smart Mobility Lab takes on transportation 09 Traffic solutions with a smartphone 10 Measuring the impact of smart homes 12 Changing paradigms with big data 14 About the access Centre

m i c r o a n d n a n o s c a l e 15 Taking 3D printing to the nanoscale 18 Fighting cancer with a “lab on a chip” 21 A sensor almost as small as a cell

e u r o p e a n r e s e a r c h c o u n c i l 22 Fulfilling the promise of wireless speeds 24 Winners of erc grants

e l e c t r i c a l t r a n s p o r tat i o n 25 The power of electrical roads 27 A new model for electric vehicles

a lu m n i 28 Working at Google to revolutionize communication

p r o f i l e 30 The industrial relevance of Chandur Sadarangani

e d u c at i o n33 Melding theory and practice to make music

37 fac t s a n d f i g u r e s

45 t h e s e s

Contents

in 2012, kth performed a comprehensive as-sessment of its research across the university, and the results were clear: the kth School of Electrical Engineering (kth ee) is making a global impact.

Just to give you some examples: our researchers are developing both highly efficient drive systems for railway traction, and cooperative vehicle systems that promise improved accessibility, fewer traffic jams and lower fuel consumption. We are also commercia-lising the world’s largest pure-play micro-electrome-chanical systems (mems) foundry, and building vital infrastructure such as electric field measurement systems for nasa to use in space.

For me, these achievements validate our mission of deepening our societal influence while maintain-ing, and continually improving, our position as a world-class research and educational institution, a synergy exemplified by the 2012 QS World University Rankings, which ranked kth ee among the top 50 schools in the world within our field.

We are also immensely proud of the performance of two centres within our school — Swegrids and the access Linnaeus Centre of Excellence. Sweg-rids is a national research centre focused on smart electrical grid and energy storage technology, which was established last year at kth and is headed by Professor Rajeev Thottapillill from our school. ac-cess is a long-term interdisciplinary kth collabora-tion on complex networked communication systems, and a 2012 evaluation commissioned by the Swedish Research Council concluded that access “is the lar-gest and leading research centre in its field in Europe, being able to generate world-class research and being highly attractive for international recruitments and exchanges.”

A first-class school must also provide a first-class study and working environment. Since 2007, we have increased the number of teaching faculty by nearly 65 per cent, from 46 to 72. This growth has strengthened our research capabilities and allowed us to offer our students a more intensive and more supportive educational experience.

In fact, a recent survey of kth’s Master of Science in Engineering students showed that they are, in general, extremely satisfied with both their teachers and the curriculum. Among all schools at kth, we have the second-highest number of paying students, and we are proud that the number continues to grow.

We recently started working on a development plan for the 2013 to 2016 period. The plan will include increased recruiting efforts to attract top students from around the world, as well as pursuing research that lays the foundation for important social infrastructure. This is exemplified by our work on smart grids, cyber security and electrical roads, some of which is presented in this yearbook. Creating this plan is an exciting task, and everybody involved knows that there is only one way to go for kth ee, and that is forwards.

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KTH School of Electrical Engineering 76 KTH School of Electrical Engineering

As the power grid and other systems become smarter and more interconnected with other it infrastructure — such as home appliances, cars, the internet, and, not too far into the future, electric roads, augmented reality glasses and driverless cars — security is crucial. text david callahan | photo istock photo

proteCtion from unseen threats

passing the lonely hours during a night shift in the natio-nal power utility’s control centre, a network transmission operator connects his workstation to the internet and chats with friends over a popular social network. Accustomed to accepting friend requests from strangers, the ope-rator blithely accepts yet another — this time with devastating consequences. He has opened up the network to a hacker who unleashes a national blackout.

This hypothetical cyber-attack scenario was simulated as part of the eu-financed viking project, an investigation of vulnerabilities in supervisory, control and data acquisition (scada) systems for critical infrastructure, such as power, water and transport. Mathias Ekstedt, an associate professor from kth ee’s Indu-strial Information and Control Systems department, says that a unique dimension to the viking project was its final module, which analysed the cost of cyber-attacks to society. Ekstedt was

one of three researchers from different disciplines at kth ee who collaborated on the Fram-ework 7 Collaborative strep Project, in partnership with eth in Switzerland, abb ag and eon in Germany, Astron Informatics in Hungary and mml Analys &

Strategi in Sweden. t h e c a l l for the study stems from the fact that many scada systems were not built to connect with general business it systems or the internet and without a thought given to why anyone would want to penetrate them, Ekstedt says. But, like the fences and walls that have always pro-tected critical infrastructure, it systems represent a “new surface” for intruders to breach.

“ t h e r e ’s a new way in,” Ekstedt says. “These systems were not built with security in mind, so new competence is needed. The complication is that it security is very difficult to assess.”

viking, which underwent its final review in early 2012, provides utilities with models for assessing their risk level and making risk-management calcula-tions. For example, Ekstedt says, a power company using these models could more accurately de-termine how it should distribute its security resources. “Parts of the it structure can vary in their resiliency and at the same time, the consequences of damage vary according to which part of the in-frastructure is attacked,” he says.

t o u n d e r s ta n d the full scope of the problem and to present findings in a context that industry can use, Ekstedt collaborated with the access Linnaeus Centre senior researchers György Dán, Assistant Professor with the department for Communication Networks, and Henrik Sandberg, associate professor with the Auto-matic Control department.

Together, they developed models for a scada system, for the power grid processes, and for the society that is dependent on the electricity supply. The team then proposed actions to decrease

risks. Ekstedt says that although the scada model was based on a power grid, such control systems have enough in common with those used in other utilities that several of the models they defined can apply to other kinds of public infrastructure.

Finally, the project results were evaluated on a testbed that simulated the critical infrastruc-ture of a power network and a range of attacks. “We looked at what happens if some attacker goes here and manipulates some part of the system,” Ekstedt says. “We could observe the conse-quences in the power system and, by using a monetary index that we developed, we could cal-culate the loss in gross national product.”

t h e t e s t b e d referenced a hy-pothetical “viking country,” with a power grid and some fictional cities, that could be parameteri-sed to mimic any country in the eu, to some extent, Ekstedt says. “The scenarios were a way of con-necting all of the traditional aca-demic models. Taken separately, excellent work was done in each academic domain, but we needed to connect our work for it to meet the needs of industry. The sce-narios provided a way of putting the research into context.”

t h at c o n t e x t is valuable to public utilities, which Ekstedt says require better risk-analysis tools. “Understanding your risks requires better understanding of how vulnerable your system is and what parts need better pro-tection,” he says. “Then you have to understand the connection and impact of the it asset on the physical world.

“There’s no silver bullet or sing-le method for utilities to follow, but by having better information, they will make us all safer.” ■

Researchers at the smartts lab at kth ee are working to build real-time analysis and control methods that will give network operators the necessary tools to deal with rapid fluctuations in their network, particularly in a future that includes variable sources of renewable energy. Watch a video on their work at:www.ee.kth.se/yearbook

“There’s no silver bullet or single

method for utilities to follow, but by having better

information, they will make us all safer.”

infrastructure | security security | infrastructure


access centre | smart mobility

drivers are usually discour-aged from using smartphones in the car. But peter händel takes the op-posite point of view: smartphones should instead become an extension of the dashboard.

händel, a professor of signal pro-cessing at kth ee, is also the Re-search and development Manager for Movelo ab, a start-up focused on traffic and transport solutions. the company has developed a flexible software platform that could have far reaching implications for traf-fic, fuel efficiency and how consum-ers pay for auto insurance. händel is joined on the Movelo team by two k t h colleagues — isaac skog, a re-searcher, and Martin ohlsson, who serves as Movelo’s chief technolo-gy officer.

taking advantage of the latest sig-nal processing techniques, Move-lo uses a smartphone’s gps/Glonass receivers, accelerometers and gyro-scope to determine where, how often and how safely someone is driving.

Using this data, insurance compa-nies could base insurance policies on when, where and how well someone actually drives, rather than on their age or where they live. Under the

programme, safe drivers could sig-nificantly cut their bills.

“i hope the app encourages peo-ple to drive more carefully, especial-ly if they know that they can make money from it,” händel says. “i like using carrots rather than sticks to encourage safe driving. tolls and congestion charges are not the only way to reduce traffic during peak hours.”

the insurance company if ska-deförsakring ab has launched the Movelo solution under the name of if safedrive, and it could potentially save users up to 30 per cent off their auto insurance premiums.

Movelo has developed alternate versions of the app that emphasise sharing via social media as well as gamification, though these features will not be included in the first ver-sion of if safedrive. the sharing as-pect could be especially helpful in identifying traffic bottlenecks.

“if we can all help each other and anonymously share information, we’ll get smarter traffic solutions and a more sustainable traffic situ-ation in stockholm and other major cities,” händel says. ■

A smart extension of the dashboardA neW solution developed by three reseArchers from kth ee And the Access linnAeus centre hAs the po-tentiAl to not only sAve drivers money And increAse fuel efficiency, but to revolutionise the Automobile insurAnce business.

text peteR laRsson

Within the Movelo app, drivers can invite friends to participate, earn points and gold stars and see themselves ranked on leader-boards, one of several gamification features.

Swedes spend 350,000 hours eve-

ry week in traffic jams. Information

from Movelo us-ers can help reduce

traffic congestion, by providing up-to-date road and traf-

fic conditions.

smart mobility | access centre

m a g i n e f o u r or five 18-meter-long trucks run-ning in a “train” down the motorway, each truck only three meters apart. Thanks to researchers from kth

ee’s new Smart Mobility Lab, these convoys could soon be safe, energy-efficient and time saving reality.

The Smart Mobility Lab is a model-based lab focused on information and communica-tion technologies for smart and energy–efficient transportation. One specific goal is to demonstrate that cooperative vehicle systems — such as heavy-duty vehicle platoons — can lead to improved accessibility, fewer traffic jams, lower fuel consumption and emis-sions, plus increased safety levels.

The lab has been equipped with

a motion capture system consist-ing of 12 infrared cameras. This system provides indoor localisa-tion that can be used by model vehicles in the same way as a gps would be used by real vehicles. In the near future, there are plans for integrating traffic simulation models and real-time traffic data

into the research performed at the lab.

“With modern communication and sensor technologies, there is an enormous amount of traffic and environment data avail-able,” says Jonas Mårtensson, a researcher at the department for Automatic Control and the ac-cess Linnaeus Centre. “We must first take all the data and turn it into useful information, and then we use it for energy-efficient con-trol of everything from individual vehicles to entire fleets. We co-ordinate the vehicles on the road and optimise their routes, taking into account the road topography and the current traffic situation, among other things.”

But the challenge is not just to create more efficient systems but also to keep them safe. Panagiotis

taking the smart road towards effiCient transportThe smarT mobiliTy lab is Taking TransporTaTion daTa and using iT To build models ThaT will make roads safer, ease Traffic and reduce emissions. a prime example of This is research on heavy duTy vehicle plaToons.

text nathan heGedUs | photo scania

Papadimitratos, Associate Profes-sor of Communication Networks, also an access researcher, has been working for years to identify where transport systems are vul-

nerable and then build in safety and defence mechanisms.

“Smart systems mean that more and more data about our everyday lives and businesses go through that system,” he says. “And the more devices you put out there, the more likely they won’t be protected enough.”

The next step for researchers is to start model-based implementa-tions, which will enable them to test more advanced scenarios based on information infrastruc-tures that are not yet feasible to implement in real traffic.

Among other benefits, vehicle-to-vehicle communication enables smoother adaptive cruise control, which saves fuel, and could also potentially optimize a vehicle’s speed with respect to the topogra-phy of the road ahead, which has been shown to give fuel savings of up to three per cent on certain types of roads.

With aerodynamic inprove-ments included, the potential fuel and CO2 emissions savings could rise by as much as 15 per cent. ■

“More data about our

everyday lives and businesses

go through the system.”

Jonas mårtensson.

access centre | smart home smart home | access centre

h e p r o j e C t i s start-ing with one specific smart — or active — apartment: a 104sq m space meant for a

couple over 55 years old. And kth ee researchers are playing a key role in calculating the efficiency of this home of the future.

“Sometimes when electricity is cheap, it may not always be envi-ronmentally friendly,” says Henrik Sandberg, an Associate Professor in Automatic Control, who is also a researcher at the access Linnaeus Centre. “It is our job, among other things, to work out the best solu-tions. Timing is key with appliances. For instance, a washing machine goes through many phases, and each draws different amounts of current. There are a lot of parameters to keep track of.”

In addition to electricity consumption and a wide array of displays for the inhabitants, the active apartment will also automatically lower the heat or turn down air conditioning when no one is home. But, as Sandberg points out, the resident will always have the last word, with the ability to run their appliances and heating however they like. The smart home should not be a prison, he says.

“We have had a strong focus on

usability and ease of use,” Sandberg says. “If the residents do not use the smart features, the whole con-cept will fail.”

As families move into their new energy-smart homes,

the primary role of kth research-ers will be to evaluate the impact of the smart technology inside. Using applied pricing and CO2 measurements, which change from hour to hour, the inhabitants can modify their behaviour in order to save money and energy. Based on initial results, research-ers will then be able to estimate the impact of a more general implementation of the methods.

Assuming that it is possible to transfer 5 to 15 per cent of daily energy consumption from peak times to off-peak times, a recent kth ee study found potential national savings of up to sek 429 million at current energy prices. Future use of more wind and solar power will likely make prices increasingly volatile in the future, and this could increase the potential savings significantly. The kth ee researchers say it is

important to remember that the technology being used at the Roy-al Seaport is forward looking and not designed only for present con-ditions. The apartments have been built for the long-term, and in the future, consumers will be able to take an even more active role in determining variable power prices depending on weather conditions, says Lennart Söder, Professor of Electrical Power Systems.

All of the numbers in these models are based on energy use in apartments in urban areas with district heating and relatively energy efficient home appliances. Home owners, who usually have significantly higher electric heat-ing costs, would probably see even greater savings.

The sek 21.8 million project — funded 50 per cent by the Swed-ish Governmental Agency for Innovation Systems (vinnova) — includes kth, Interactive Institute, Electrolux, the con-struction firm ncc, the housing organisation hsb, the energy com-panies Fortum and abb, and the property development firms jm and ByggVesta. The concept could eventually expand to 170 apart-ments in the larger Stockholm Royal Seaport development. ■

a smart home rises at the stoCkholm royal seaportThe smart home is becoming a reality at the Stockholm Royal Seaport, and researchers from kth have been integrally in-volved in a two-year project along with leading construction, utilities, home-appliance and research organisations. text peteR laRsson and MaRie andRov | photo Jose GaRcía-valdecasas, WallenstaM och veRa aRkitekteR

Key facts the co2 emissions goal for the stock-holm Royal seaport project is to be lower than 1.5 tons per person by 2020 and completely carbon neutral by 2030.

area 236 hectares. land owned by the city of stockholm.area building start 2010.completition 2030.current construction soil reme-diation, infrastructure.first occupancy 2012.new apartments 12,000. new work spaces 35,000. commercial areas 600,000 sq m.energy target 55 kWh sq m/year.distance to city centre 2.1 miles.

10 kth School of Electrical Engineering 2012

henrik sandberg

associate professorResearcher at ACCESS

kth School of Electrical Engineering 2012 11

liquibus | corunt omnias corunt omnias | liquibusBig data | access centreaccess centre | Big data

u e s t p r o f e s s o r Maria Papadopouli has always been inter-ested in new comput-ing paradigms — espe-

cially user-centric grassroots ones. Since the late 1990s, her research has focused on mobile peer-to-peer computing, and now these types of collaborative networks are leading the way towards a significant shift in the way smartphone users may share wireless data.

i n r e C e n t y e a r s , the communi-cations market has become ever more diverse with a proliferation of service providers and opera-tors, with both users and networks producing vast amounts of data. Papadopouli has focused her work on analysing wireless networks and developing systems that can empower wireless customers to improve their quality of experience.

Papadopouli came to the access Linnaeus Centre for a three-year sabbatical from the University of Crete in Greece. She says the proximity to industry in Stockholm played a key role in her decision to come to Sweden, as well as the plethora of opportuni-ties available for interdisciplinary research and cooperation at access, and at kth in general, in fields including mobile computing, wireless networks, data mining,

signal processing, network eco-nomics and business.

She is working on two projects with particular potential. One revolves around modelling wire-less access markets, and integrates game theory, queuing theory and network economics. Papadopouli says her aim is to develop models to analyse large-scale national markets using business-driven

criteria. With her team, she is also building a simulation platform for analysing pricing algorithms, services and types of agreements among operators within a diverse set of customer populations.

“With this modelling framework, we can study wireless markets using economic terms, while ad-dressing issues of computational

complexity and accuracy,” she says. And then there is u-map, a

crowdsourcing software agent that runs on smartphones — the pro-ject she talks about with the most enthusiasm. This allows a user to evaluate the perceived qual-ity of experience of a service by providing an opinion score, while the agent also measures network performance in the background. Using the measurements provided by u-map users, the agent can then recommend to visitors the best service provider/operator in a cer-tain region based on that visitor’s specific profile.

“A roaming user can query the u-map for a recommendation about the wireless providers in that region,” she says. “This may also enable an operator to learn more about its infrastructure — possible misconfigurations, in-tense traffic load, and unexpected trends, for instance — as well as about the behaviours and require-ments of its customers.”

The software agent collects network measurements, user reviews and opinion scores into a spatio-temporal geo-database, then performs an analysis, and provides recommendations about various services in a region.

“This means that consumers and companies can make more educated decisions about which

Changing the world with wireless dataBy analysing the big data produced by wireless networks, guest professor Maria Papadopouli is changing the paradigm of how users choose and interact with their wireless providers. text MaRie andRov | photo MaRie andRov

services and network operators to choose in different regions,” she says. “In theory, that is.”

Papadopouli is able to run her projects thanks to a research excellence grant she received from the General Secretariat for Re-search and Technology in Greece. Building on this, she also plans to set up a testbed in Stockholm that will allow her to perform larger-scale studies.

s h e h o p e s that u-map will eventually gain wide acceptance in both the consumer and enterprise segments.

“U-map constitutes a paradigm shift in the way we can make use of big data generated by wireless users,"she says. “I’m very excited about experimenting further with this technology here at access. Hopefully it will benefit both my students and industry — and then ultimately society.” ■

“With this modelling

framework, we can study

wireless markets using economic

terms.”

About:Guest professor at the access linnaeus centre 2011–2013. associate professor of computer science at crete Universitym o t t o : the mind is not a vessel to be filled but a fire to be ignited (plutarch).V i s i o n : create metaphoric bridges among research groups worldwide to transfer knowledge through interdisci-plinary research and teaching.

kth School of Electrical Engineering 2012 1312 kth School of Electrical Engineering 2012


access centre | about

t h r o u g h C r e at i V e interaction in the areas of networked and cyber-physical systems, researchers are laying the foundations for future solutions in big data, smart mobility, active buildings, cyber-secure power grids, po-sitioning systems, home-based health care and much more.

Founded in 2006 on a 10-year Linnaeus grant from the Swedish Research Council (vr), access has exceeded its research goals, doubled its number of faculty members and developed a thriving doc-toral programme, with over 100 PhD students collaborat-ing in a rich pool of courses and workshops. The numbers of women both in the faculty and among students have also grown.

In 2012 vr conducted an extensive mid-term evalua-tion of the centre’s research, collaborations, programmes and impact on society. The international panel of experts found that “access has far surpassed expectations with the collaborative environment it has fostered and the concrete benefits it has generated.”

The panel found that the centre enhances the

international visibility of the scientists involved and the results of their research. This has helped to attract 21 junior tenure-track faculty members to access, making a substan-tial impact on the broader kth community. Funding for these positions comes from diverse sources, such as government-funded Strategic Research Areas, the ssf Fu-ture Leader programme, the vr junior grants or kth ee’s strategic research initiatives.

Centre faculty members have been recognised with several prestigious awards and grants, including the 2011 ieee Signal Processing So-ciety Technical Achievement Award and a 2012 erc Start-ing Grant from the European Research Council, as well as more than 20 European Union grants and major collabora-tive grants from vinnova, the Swedish Governmental Agency for Innovation Sys-tems. access is also actively working together with na-tional and international con-stituencies on collaborations such as the Strategic Research Area ict The Next Genera-tion, and European Institute of Innovation and Technology ict Labs; industrial coopera-tion with companies such as Ericsson, Scania, abb, Cisco, and Microsoft; and links with selected universities in the us, China and South Korea.

The evaluation resulted in a 10 per cent increase in funding for the coming four years: a total of eur 1.3 million per year, or eur 5.2 million until 2016. ■

aCCess: all areasThe kTh access linnaeus cenTre has 160 resear-chers and an annual Turnover of abouT eur 15 million, making iT one of europe’s leading univer-siTy research cenTres for complex communicaTion neTworks and sysTems.

new dimensions of 3d printing A drawing programme and a 3D printer: in the future, that’s all it will take to produce customised micro- and nanoscale silicon structures for sensors and other devices. text Benny Ritzén | illustrations andeRs WesteRBeRG | photo håkan lindGRen

d p r i n t i n g i s one of the hottest topics in technology, with the potential to revolutionise manufacturing process-

es in a vast number of fields. And now, in a proof-of-concept project, researchers at kth ee are taking it down to nanoscale, which could pave the way for cheaper and more accessible manufacturing of customised micro- and nanoscale

components in silicon. “We have developed a new

approach for production of silicon structures for sensors and other devices by combining existing technologies in an innovative way,” says Frank Niklaus, head of the research team and Associate Professor in the Department for Micro and Nanosystems. “Now that we have tested it manually, it can be used as a model for a

new 3D printer that can print the sensors.”

Production of silicon sensors at micro- and nanoscale with today’s technologies requires a full-scale clean-room laboratory, which can cost several million euros. These labs are also not suitable for small-scale manufacturing, as the production technology is usually optimised for large production volumes running into hundreds ››

A virus warning system that de-

tects airborne par-ticles like the vi-

rus that causes the winter vomiting

disease is only one possible future ap-

plication for ad-vanced micro- and

nanostructures.

3d printing | micro and nanoscale


3d printing | micro and nanoscalemicro and nanoscale | 3d printing

of millions of devices. The new approach developed by Niklaus and his team has the potential to greatly increase the innovation power of both smaller companies and individual researchers and engineers who lack access to expensive semiconductor tech-nology.

Also known as Microelectro-mechanical Systems (mems), these sensors and devices, with accelerometers as one example, are engineered from thin slices of silicon, the same material used to manufacture integrated circuits. mems sensors and devices are used in automobiles, in mobile phones for motion control and can also be used in industry and in medical technology.

“These components could be made very easily, flexibly and inexpensively compared with today’s manufacturing processes,” Niklaus says. “All you’ll need is a 3D printer and someone to draw the structure in a drafting programme on a computer.”

The new 3D printing tech-nology consists of an additive

layer-by-layer process for defining 3D patterns in silicon, using a focused ion beam followed by silicon deposition. The layered 3D silicon structures are defined by repeating these two steps over and over, followed by a final etching step in which the excess silicon material is dissolved away. In the team’s vision of the future, the structure would first be designed in a 3D drawing programme then sent to a 3D printer that recreates the structure in silicon, layer by layer from the bottom up. 3 d p r i n t i n g tools using materi-als other than silicon — such as polymers, metals, or ceramics — already exist, but they are simply not suitable for micro- and nano-structures, according to Niklaus.

“You really want to use silicon, and that was the starting point for our work,” he says. “We were primarily thinking about using it for sensors, since that is our area of expertise. But it can of course be used for any type of silicon nanostructure.”

Niklaus stresses that the new

technology should be seen as a complement to large-scale traditional methods, suitable for volumes up to about 10,000 units.

“For large-scale production, the traditional methodology will always be unbeatable in terms of price per unit,” he says. “But in many applications, when you just want a few thousands units, it is total overkill to use an expensive semiconductor clean-room facility.

“ t h e n e w m e t h o d may substantially increase the op-portunities for more diversified use of mems. It will allow small- and medium-sized enterprises to design mems and integrate them into their products much more often, and in a wider range of con-figurations than at present.”

Drastically reduced production costs will create opportunities for small market innovations, much like dropping computer prices did in the it sector.

“This could allow for manufac-turing specially designed sensors for a few patients or creating tailor-made applications for

industry at a much lower cost,” Niklaus says. “Giving engineers access to very easy, specialised manufacturing of a diversity of advanced sensors opens up com-pletely new and creative solutions in medical technology.”

In 2011, Niklaus received a grant of eur 1.5 million from the Euro-pean Research Council (erc) for his research on new manufactur-ing paradigms for micro- and na-nosystems. Now he has received an additional eur 150,000 from the erc to look into the commer-cial side of the technology, work he will carry out in collaboration with kth Innovation.

The work done by Niklaus and his team on 3D printing of nanostructures was also recently included in the Watch list of Innovations That Could Change the Way You Manufacture by the Society of Manufacturing Engi-neers (sme), and will be featured in Manufacturing Engineering magazine and at sme’s 2013 An-nual Conference in Baltimore in the us. ■

“This could allow for manufacturing specially designed sensors for a few pa-tients or creating tailor-made applica-

tions for industry at a much lower cost.”

Frank niklaus.


Fighting cancer | micro and nanoscale

18 KTH School of Electrical Engineering

t a l l s ta r t e d at a “speed dating” event that matched kth researchers — includ-ing Wouter van der Wijn-gaart, a Professor of Micro and Nanosystems — with

a counterpart from Karolinska University Hospital working on pancreatic cancer. Both men were working — from different angles — on encasing stem cells in a new kind of polymer shell to better target treatment of tumours.

With research colleague Tommy Haraldsson, van der Wijngaart is working on building a capsule, or porous cage in a “polymeric material” that encases genetically modified stem cells, which will then be sent directly into the tumour. The modified stem cells will locally produce toxic compounds that will hope-fully kill the tumour cells. The polymer cage protects the healthy parts of the body from the stem

cells, and vice versa, minimising the risk of the treatment activate-ing the patient’s immune system, as well as preventing the stem cell from turning into a tumour itself.

Together with colleagues from Karolinska, the kth ee researchers then received a eur 150,000 grant from the Swedish Childhood Cancer Foundation to investigate whether the same method would work on medulloblastoma and neuroblastoma, which are among the most common solid tumours in children. The treatment may be a potential cure for this disease, which currently has a mortality rate of 35 per cent, while reducing the severe side effects associated with chemotherapy, including hearing loss, thyroid function disorders and secondary cancers.

“The capsule will be manufac-tured in a new way on a ‘lab on a chip,’ which is a chemical labora-tory on a microchip,” ››

targeting tumours with Cells in a shellThanks to a series of innovative collaborations, researchers from kth ee have found a potentially better and more effective way to treat some of the most common childhood cancers.text nathan heGedUs | photo linUs hallGRen

micro and nanoscale | Fighting cancer

Xiamo Zhou, a Chinese PhD student, performs all

the daily work on a project to develop a new

cancer treatment in which stem cells are encased in

polymer shells to focus chemotherapy treatment

on a specific tumor.

Fighting cancer | micro and nanoscalemicro and nanoscale | Fighting cancer

Wouter van der Wijngaart, Professor of Micro and

Nanosystems, with Xiamo Zhou, examining a “lab

on a chip” that will create polymer shells that could

help reduce the side ef-fects of treatment for cer-

tain childhood cancers.

van der Wijngaart says. “This makes the cell encapsulation process more controllable. The polymer we use is also a better plastic and we can test the entire packet before it enters your body.”

Xiamo Zhou, a Chinese PhD student, performs all the daily lab work, starting with building the “lab on a chip” out of the polymer and then testing the fluid circuits on the chip. She has created the first chips and is now testing them by pushing water and oil through the circuit, before moving on to the polymer materials. The next major step in the project will take place in Shanghai this summer, when the polymer beads will be

injected into mice.Zhou came to kth as an

exchange student in January 2012 from Shanghai Jiao Tong University, one of the top universi-ties in China. Zhou actually met van der Wijngaart back in China during a visit for the Joint Centre for Innovation Driven Biomedi-cal Research and Education, a collaboration between kth and Shanghai Jiao Tong University.

Zhou then applied for and received a four-year scholarship from the China Scholarship Council, which allowed her to start work on the cell encapsula-tion project in September. Van der Wijngaart says that without the

scholarship, the funding for the project would have run out after about a year. With Haraldsson, van der Wijngaart has started a company — Mercene Labs — that is selling polymers and plastic products based on the same pat-ented oste Technology platform used in their cancer research. Van der Wijngaart says their mate-rial can serve as replacements for off-the-shelf components or considerably reduce product assembly costs in any number of industries, and after one year in business, they already have 15 paying customers in Europe and North America. ■

t h r e e k t h researchers are working feverishly to bring down the skyrocketing costs of develop-ing new medicines. their solution is a sensor not much bigger than a single cell. “our research will hopefully not only lead to new drugs but also cures for diseases that can’t even be treated today,” says kristinn b. Gylfason, project Manager and researcher at the department of Micro and nano-systems at kth ee.

along with colleague and re-searcher tommy haraldsson, also of Micro and nanosystems, and hjalmar brismar, a professor in the department of applied physics, Gylfason has received a sek 3.8 million grant from the swedish Research council. the sensor the three researchers are developing encircles a given cell at close proximity. then, when the cell is exposed to a new drug, the sensor can effectively capture molecules secreted by it.

this will lead to definitive tri-al results earlier in the drug devel-opment process and also produce more concrete information on the cell’s response to a new drug. ■

Cutting Costs down to size

Kristinn B. Gylfason.



Grants | european research council

world is, in many ways, going mo-bile, and this trend will only speed up, with everything from mobile commerce to augmented reality glasses and driverless cars.

So what would it take to bring our actual connection speed up to and beyond what we’re promised today? Proutiére is researching a solution called Dynamic Spec-trum Access (dsa), which will make it possible for radio devices, such as mobile phones, tablets and future wireless cameras, to become frequency agile, meaning they can rapidly and dynamically access a wide spectrum of bands. This cutting-edge solution would let radio devices move between bands and fill up empty spaces instantaneously.

“ t o u s e t h e analogy of mo-torways, the way spectrum is managed today corresponds to forcing people to use a certain lane depending on the car they drive — for example, Volvo drivers can only use the left lane,” he says. “Of course this is particularly ineffi-cient, and our objective is to design systems with higher capacity — motorways with much more lanes — that allow people to dynamically choose and change lanes.”

And what is the possible impact of better flowing traffic? Wireless

communication that moves 10 times faster, Proutiére says. Plus it will also lay the foundation for the advanced mobile networks we’ll see 10 years in the future.

In 2012, Proutiére was one of 536 researchers in Europe — with 22 coming from Swedish institu-tions — awarded a prestigious erc Starting Grant from the European Research Council to advance his research on wireless communication networks. The erc awarded a total of eur 800 million in Starting Grants last year.

Proutiére says the grant will allow him to focus his work on dsa as well as hiring two PhD students and two post-doctoral re-searchers over a five-year period. “This has the potential to become one of the highest profile dsa research projects in Europe,” he says. “And it also has the potential to increase understanding of problems in areas such as artifi-cial intelligence and robotics.”

p r o u t i É r e ’ s research is ambitious from a theoretical perspective, as it requires an interdisciplinary effort, including theoretical tools from disciplines such as optimisation, artificial intelligence and machine learn-ing. These are all key factors in designing practical mechanisms

and protocols that exploit the full potential of dsa.

“But I also hope that they will provide very valuable insights into many other problems in various disciplines, including multi-agent systems such as industry robots, optimisation, and economics,” he says.

p r o u t i É r e C a m e to academic research via industrial labs at France Telecom r&d and Microsoft Research that focused on practical engineering problems.

“At first sight, these industrial problems may seem uninteresting from an academic perspective,” he says. “But the most exciting part of my job was to extract, from these seemingly dull problems, challenging questions that required significant theoretical developments, as well as the invention of new mathematical methodologies, to solve them.

“To me the success of an engi-neering research project is about the researcher’s ability to develop original solutions to a practical and industrial problem. If along the way, novel analytical methods can be developed, then the project becomes especially rewarding.” ■

Mobile web surfing has grown by 150 percent in the past year at mobile operators Telia and Tel-enor, according to the companies themselves.

Faster wireless connections could revolutionise the way we live our lives. A grant from the European Research Council is going to allow one researcher to explore the theoretical possibilities.text MaRie andRov and peteR laRsson | photo håkan lindGRen

h e w i r e l e s s s p e e d we pay for today is usually pure fiction, says Alexandre Proutiére, a re-searcher at kth ee

and the access Linnaeus Centre. To get the peak rate — let’s say 10Mbit/s — one would have to be the only connection on a mobile

phone mast using the internet. The same applies to an access point at home, at the airport or at work.

The reality of the wireless internet is one of slower and more uncertain speeds. And as if to confirm this point, Swedish mo-bile operators have been reporting a serious lack of capacity in their networks, as mobile browsing

increased by more than 150 per cent in 2012 alone, according to the mobile operators Telia and Telenor.

The wireless internet has far more potential than just faster web surfing. Wireless connections have the potential to revolutionise medicine, education and energy usage, to name a few areas. The

“To me the success of an engineering research project is about the researcher’s ability to develop

original solutions to a practical and industrial problem. If along the way, novel analytical methods can be developed, then the project

becomes especially rewarding.”

european research council | Grants

Other eec winners overleaf

pushing the boundaries

Alexandre Proutiére.


Roads | electrical transportationeuropean research council | Grants

w h e r e o t h e r s see asphalt, the leader of the Electrical Roads project sees a network of “smart power supply” that could make it possible to drive an electric car all day without having to recharge.

“We have the technology to power a car while it is moving, with an electrical track in the road that propels the car in a way that’s a lot like a slot-car kit,” Leksell says. But unlike a toy, an electric car has a battery that enables it to continue driving independently of the road’s power supply, when it needs to overtake another vehicle

or simply leave the electrified road entirely, he says.

Together with a start-up company called Elways ab, Leksell’s team has been testing the technology on an electrical dem-onstration road close to Arlanda, Stockholm’s international airport. The involvement in electrical roads evolved from hybrid vehicle research that began nearly ten years ago at kth ee. “We lifted our eyes from the vehicles and began to think about the entire transportation infrastructure,” Leksell says.

As the car enters the section of pavement where the strip lies, an arm drops from beneath the vehicle, finds the electrical track, and locks in. “It’s similar to the third rail on a subway line, only it can be confined and made difficult for people to actually touch,” he says. “Safety is crucial.”

The team has examined other practical questions, such as how to keep the track from freezing or icing over (the rail can be heated), or how the connection should work (the team is testing materi-als and techniques for ››

elecTric car developmenT is primarily focused on fuel efficiency, and unTil recenTly, researchers have been seeking answers under The bonneT. buT aT kTh ee, maTs leksell and his Team are looking a liTTle lower, aT The sTreeT below.text david callahan | photo istock

reCharging transportation on eleCtriCal roads

erC winnersWatch a film on how researchers test technology that powers a car while it is already moving:www.ee.kth.se/yearbook

håkan hjalmarsson (2011)the leaRn project primarily deals with how system models are built based on measured signals — what is known as system identification. an interesting sub-area is how these methods relate to newer technolo-gy within “machine learning,” which has grown from a branch of comput-er science to involve modern mathematical statistics. of particular interest are algorithms that automatically decide on how to perform experiments on the system so as to learn about its important properties. another area is the study of algorithms that are robust to the used model class.

this is a joint project between departments at kth ee and linköping University. hjalmarsson received the grant together with professor len-nart ljung of linköping University.

Advanced Grant: eur 2.5 million

göran stemme (2011)stemme and his fellow re-searchers are targeting the de-velopment of flexible heteroge-neous integration schemes for combining best-of-class ma-terials, components and man-ufacturing methods into eco-nomically viable micro- and na-no-electromechanical system

(mems and nems) solutions. specifically, they will develop novel and enabling micro/nano fabrication and integration techniques with a focus on flexibil-ity and cost-efficiency in the following areas: heter-ogeneous material integration, heterogeneous sys-tem integration and lab-on-chip integration.


björn ottersten (2008)this project — agile mimo systems for communications, biomedicine, and defence — targets the emerg-ing frontier research field of multi-ple-input, multiple-output (mimo) systems. Ultimately, the idea is to develop the fundamental tools that will allow the design of wireless communication systems with an order-of-magnitude higher capac-ity at a lower cost than that of to-day; of ultrasound therapy systems maximising delivered power while reducing treatment duration and unwanted illumination; and of dis-tributed aperture multi-beam ra-dars allowing more effective target location, identification and classi-fication.

Advanced Grant: eur 1.8 millionan advanced Grant normally totals eur

2.5 million over five years.

About: the european Research council, erc, aims to support the best researchers in europe, with a long-term goal to promote scientific excellence and boost the reputation of european research internationally.

erc offers a series of grants, including both advanced Grants and starting Grants. advanced Grants support "excel-lent and innovative research" conducted or led by established and world-class research leaders. erc starting Grants go to up-and-coming research leaders who are establishing their own research teams and are about to start conducting independent studies.

frank niklaus (2011)Micro- and nano-electromechanical system (MeMs and neMs) components are vital for many industrial and consumer products, such as airbag systems in cars and motion controls in mobile phones. this project is focusing on new paradigms for flexible and cost-ef-ficient manufacturing and integration of mems and nems within three related research areas: wafer-level heterogeneous integration for mems and nems, inte-gration of wire materials into mems, and free-form 3d printing of silicon micro- and nanostructures.


in 2012, the erc divided eur

680 million eur 302 among

leading researchers from

24 countries in three fields: natural science and tech-nology; the life sciences;

and social science and the humanities.

24 kth School of Electrical Engineering 2012


vehicles | electrical transportationelectricaltransportation | Roads

connecting and disconnecting a car from the grid).

“The technology for this already exists,” Leksell says. “For now it’s more of an infrastructure problem to work out.” Discussions with the nation’s power utilities and transportation ministry indicate that Sweden is probably about ten years away from implementing electrified roads between its major cities, Leksell says. The roads less travelled will be left powerless, however. Leksell says that since the idea is to use energy efficiently, only routes with high traffic vol-umes will be considered.

Frequent traffic will improve the economics of electrification and ensure that power doesn’t go to waste.

The Electrical Roads concept addresses the major flaw in the electric-car solution for reducing greenhouse gases. “We really have

no practical storage capacity for electric cars,” Leksell says. “Fossil fuels are an excellent means of storing energy, but they took mil-lions of years to develop. Batteries don’t hold nearly as much energy. They’re big and heavy and take a long time to charge.”

And besides, “electricity is a commodity that should be digested immediately,” Leksell says.

Sweden could be a leader in the electrification of roads because its electrical grid is not dependent on fossil fuels. “We don’t just shift the combustion from the vehicle to a coal-powered plant, so the carbon footprint will be reduced substantially,” he says.

Leksell says that if cars are to be part of the solution to global warming, they cannot be viewed in isolation from the rest of the world’s energy problems. He envi-sions an “internet of electricity,”

which connects all consumers with a variety of green energy sources: solar from the Sahara, hydropower from the north of Sweden, and wind and wave power from open waters.

A recent call for proposals from the eu’s initiative on electromo-bility could allow kth solutions on electrical roads to be compared with others currently in develop-ment for mass deployment.

But engineering is only one dimension of the overall solution. A PhD student in the industrial economic programme is now investigating different business models aimed at making the con-cept economically feasible.

“That’s the big question mark for everyone: How do you distribute the costs?” Leksell says. “This is a case where the technology is ahead, and now society has to figure out how to incorporate it.” ■

e l e C t r i C V e h i C l e s have the potential to be a true alternative to internal combustion engines, which could dramatically lower

greenhouse gas emissions. But they will also impact the electrical grid in hard-to-predict ways.

PhD student Pia Grahn is developing mathematical models that examine this tricky question as part of the interdisciplinary Energy Systems Programme, funded by the Swedish Energy Agency. Grahn, who also chairs of the kth ee PhD Council, says there are three primary considera-tions for determining load profiles and load variations: the charging moment, the charging need and

the charging location. “Essentially, it is based on

where you are able to charge your vehicle,” she says. “People would probably charge when they arrive at work in the morning and when they get home in the evening. We are looking for the impact on the grid that the increased load would infer at those peak times.”

With her models, Grahn aims to simulate the possibilities of a future transportation system with large numbers of plug-in electric vehicles, including the potential flexibility of vehicle owners when it comes to the external use of the batteries, in other words, plugging them in. This could have huge ramifications for the electric grid, as increased load variation and load peaks could cre-

ate a need for costly infrastructure upgrades. This is also important because variable production in the electric power system is increasing, due to higher levels of wind and solar power.

Grahn believes that well-de-signed incentives could transform electric vehicles into the kind of flexible load that could help the power system mitigate these load variations and load peaks. There could also be financial benefits for vehicle owners, who might save money by charging at off-peak times of the day.

As the electric vehicle market develops, Grahn says her model could also be extended to include possible scenarios such as electri-cal roads. ■

“The techno-logy for this

already exists. For now it’s more of an

infrastructure problem to work out.”

In a world of near-ubiquitous electric vehicles, will the electrical grid be able to handle the increased load?text nathan heGedUs photo håkan lindGRen

building models for a world of eleCtriC VehiCles

electric vehicles could potentially help balance supply and demand for electricity.

mats leksell.

Pia Grahn.


alumni | Google Google | alumni

s k a n y student where they want to work

after graduation, and Google is sure

to be at the top of their list. On

graduation, Henrik Lundin was no exception.

“But I never applied for a job there because I thought my skills didn’t fit their profile,” says Lun-din, who earned his PhD in Signal Processing at kth ee. “I thought they were doing more pure com-puter science, but it turned out that I was wrong.”

Each year, Google hires a sig-nificant number of engineers but the competition is still fierce, with applicants far outnumbering the positions available. Only a small percentage of those interested get an interview, and of these, only a fraction are taken on.

Lundin came to Google via a different route. He was employed at Global ip Solutions, a small Norwegian-Swedish company. He and his colleagues developed a unique type of expertise in real-time audio and video technology that Google lacked, so the internet giant bought the company.

Today Lundin and his old colleagues work with the rest of the Swedish Google gang in central Stockholm. He works on a technology called Webrtc, which is essentially a standardised inter-face for browser-to-browser voice and video connections — both on computers and mobile devices.

w i t h w e b r t C , web developers can easily add voice and video communication to their web-based applications by just adding a few lines of code, with no need for plugins, extensions or any separate downloads. Webrtc is be-ing standardised as an application programming interface or api at the World Wide Web Consortium (w3c) and as a set of protocols by the Internet Engineering Task Force (ietf), and is currently supported in the Google Chrome and Opera browsers, with “pre-liminary” support in Firefox.

“Most of the code we have devel-oped, and now worked on, is open source, so it’s free for anyone creat-ing a web page,” Lundin says. “It’s cool to work on something where you can directly see the results for end users. What I do today will be

used by millions of people in just a few weeks or months.”

t h e r e s u lt s are potentially revolutionary, expanding the possibilities of voice and video connectivity from a few chan-nels today to almost any website tomorrow. This could completely change the way companies inter-act with customers and how we communicate on social networks, and opens up the potential for a vast range of applications in e-health and education.

When working on his projects, Lundin has daily contact with colleagues and experts all around the globe.

“These are very knowledgeable people, and our culture is charac-terised by cooperation and trans-parency,” he says. “If I need to ask a leading expert in a particular field, I often get a response immediately. People at Google are helpful and unpretentious in that way.”

When asked if he has one tip for anyone who wants to work at Google, he says, “Prepare yourself well. In an interview it is not enough to talk about yourself. We ask very technical questions.” ■

getting in at google – without eVen applyingkth ee alum Henrik Lundin beat the odds to land a job at Google, and is now working on technology that could change the way we all communicate.text petRa MalM | photo Janne danielsson

“What I do today will be

used by millions of

people in just a few weeks

or months.”


impact | profileprofile | impact

h a n d u r Sadar-angani knew early on that he wasn’t cut out for the family business. Born into an Indian family whose history

in the clothing trade spanned generations, Sadarangani saw one sibling after another follow in their father’s footsteps, while he became increasingly absorbed in how machines function.

“If something broke down in the house, I would take it apart because I was interested in why,” he says. “I usually didn’t put it back together, but I was fascina-ted by how things work.”

w h e n h e retires in November 2013 from his position as Research Leader at Electrical Machines and Power Electronics, Sadarangani’s legacy will be evident in the in-creased efficiency and sustainabili-ty of countless power engines used in daily life, from manufacturing systems to hybrid automobiles.

His most important ideas were formed during Sadarangani’s 15 years in the private sector, first with Allmänna Svenska Elektriska Aktiebolaget (asea) in Västerås and then with abb. But he’s quick to also give credit to a number of former PhD candida-

tes, some of whom have leading positions in research and develop-ment with abb as well as kth. “I had great students,” he says.

t h e p r o f e s s o r recounts his story in a soft-spoken manner that makes it easy to see why he may not have been suited to work–ing in sales with the rest of his relatives. Sadarangani’s evolution as an important influence in de-sign engineering began soon after his arrival from the uk, where he lived and worked for a brief period after receiving his Bachelor degree from the University of Manchester Institute of Science and Technology. During a sum-mer holiday in Sweden he met his wife, Kerstin, from Gothenburg; and after some attempts to settle down in the uk, the couple moved to her hometown. Sadarangani was soon enrolled in the PhD pro-gramme at Chalmers University of Technology in Gothenburg.

“m y p r o f e s s o r took me on the condition that, first of all, I only spoke Swedish, and secondly, that I never addressed him with the formal ‘ni’,” he remembers with a laugh. After graduating from Chalmers, he was recruited as a design engineer for asea

in 1979. “That’s where I learned a lot about electrical machines,” Sadarangani says. “After that, I was very solid.” Five years later, asea was absorbed by abb and Sadar-angani entered Corporate Research. Eventually he was awarded a Senior Scientist position in 1992.

His contributions include developing a U-shaped slot design for engine rotors, which has been patented by abb. The shape reduces the parasitic effects of the converter, which is key to controlling speed. “Speed control of the motor is the way to win on efficiency,” Sadarangani says.

His transition to a professor-ship at kth was natural. “I had a good background in industry and I found that with kth, or a uni-versity, you could work with other companies,” he says. “What is most interesting is that you don’t work so closely to the product, so you are in a broader field of research.”

u p o n a r r i V a l at kth, his presentation to the predecessor group of the School of Electrical Engineering teemed with a back-log of concepts he had wanted to explore while employed at abb in Västerås. “I pursued those one by one,” he says. ››

driVen by CuriosityRetiring Professor Chandur Sadarangani led major advances in his field, design engineering. But his influence has spread far beyond the lab and classroom through the success of his former students. text david callahan | photo håkan lindGRen


theory and practice | education

As one of the founders of the Swedish Center of Excellence in Electrical Power Engineering at kth, Sadarangani initiated kth ee’s Permanent Magnet Drives programme in 1994. One of the projects undertaken was the development of highly efficient line-start permanent magnet motors used in pumps by water technology company Xylem.

In the area of hybrid vehicles, Sadarangani led the development of the free-piston generator, an energy-conversion device that in-tegrates a combustion engine and electrical generator into a single unit. The hybrid research also led to work on a four-quadrant transducer (4qt), a novel system which consists of two combined radial-flux machines, one double-rotor machine and one conventional machine (stator). The 4qt enables a hybrid vehicle’s internal combustion engine to operate at maximum efficiency in any driving conditions.

“We made a prototype for Volvo Buses, which has shown very promising results,” Sadarangani says, pointing out that despite some initial scepticism, his hybrid concepts have been embraced in-ternationally. “Suddenly, it’s being researched around the world,” he says. “I recently saw a presenta-tion from Italy and it was exactly the same concept.”

“ i n d u s t r i a l relevance” is the term Lennart Harnefors, Pro-fessor of Power Electronics at ee, uses to describe the research that Sadarangani pursued. A former PhD student of Sadarangani’s, Harnefors says that this relevance is the key to the professor’s effecti-veness in attracting financing.

“His research has strengthened the electrical machines and drives industry in Sweden through new ideas and methods, as well as well-educated people,” Harnefors says. “Many jobs have been crea-ted as a result.”

Harnefors says the professor was also quick to embrace and support his student’s choice of research topic, even though it fell outside of Sadarangani’s personal areas of interest. “He was always very pleasant. Chandur’s career shows that you don’t need a big ego to be a great professor.”

By Sadarangani’s own account, the key to his success has always been his insatiable curiosity. And his journey isn’t over just because

he is retiring. The professor will continue working as a consultant, and he’ll go on exploring his pas-sion in his free time, as well.

“Electrical machines are used in so many applications; every time something new comes along, I must find out what’s new about it,” he says. “Every time I see something new that I don’t understand, I cannot resist the impulse to try to understand it.” ■

Sadarangani’s former students include his cur-rent supervisor, Professor Hans-Peter Nee, and Robert Chin, a manager in corporate research at ABB, who is Sadarangani’s boss once a week.

profile | impact

“We made a prototype for Volvo Buses,

which has shown very promising

results”

Creating something out of nothingWhat do you get when you tell a class of second-year elec-trical engineering students that they have to work in small teams to build a loudspeaker from scratch? A lot of work, a lot of good ideas, and a loudspeaker made from paper, particle board and a beer can.text nathan heGedUs | photo MaRtin ekelUnd

f o r t h e t e a m comprising of Evelina Jakobsson, Gabriel Haddad, Emil Mår-tensson and David Wikman, the journey

started last October, not in the lab but with a single lecture on mo-delling and then extensive inde-pendent grounding in theoretical calculations on, for example, the nature of acoustics or the proper thickness of copper wire.

The students presented their plans to the instructors, eventually moving on to simulations before presenting their final designs. There was regu-lar supervision, but the project “is very much kept to their own time,” says Martin Norgren, Professor in Electromagnetic Theory, who together with a team of professors has developed the course.

“The benefit is that they can combine knowledge from different courses and see you cannot be an

expert in just one area if you want to be a successful engineer,” he says. “The problem is not purely electrical or mechanical, and there is other physics involved as well.”

a n d j a k o b s s o n , Haddad, Mårtensson and Wikman put in a lot of their own time. They spent hours each day, collaborating as a group, breaking off into teams of two, or going off on solo tasks, all in their effort to translate ››


theory and practices | educationeducation | theory and practice

electrical theory to mechanics, a far more complex task than they had expected.

“The idea behind the class is very good, integrating practical work with theory,” Jakobsson says. “And the actual building wasn’t too hard. Instead, the chal-lenge was deciding on materials and figuring out how it all works.”

The students can’t use parts from commercially manufactured speakers, except for the perma-nent magnet, and they get only sek 1,200 as a group. And after that, it’s all on them to figure it out. So when they finally got a chance to build, the group first looked for easy-to-work-with materials and after some trial and error, decided upon particle board for the speaker’s box. For the voice coil, which interacts with the magnet to make the speaker work, they tried photo-grade paper, but that proved too thick and too weak.

That’s when someone spotted the beer can and started cutting. Aluminium seemed to be a good answer.

l o o k i n g at their loudspea-ker, you wouldn’t guess that it’s the product of months of devoted study and construction, but that’s exactly the point. They’ve taken the safe route and kept it simple, and spent only sek 600 so far, leaving plenty of room for last minute improvisation as they build the box around the speaker and near their first tests.

As they stand in the lab, their half-built speaker before them, it is clear the students have taken in the lessons on melding theory and project-based work, as well as mixing the electronic and mecha-nical aspects of speaker building. Jakobsson says they still almost always meet all together, even if they need to work on tasks alone.

They work well together, falling into an impromptu discussion about the best kind of glue for at-taching a piece of insulation mate-rial for the speaker’s suspension, another example of how the group is using simple — and inexpensive — options.

“It needs to be elastic,” Jakobs-son says, holding up the strip.

“But not move too much.” For all their hours in the lab,

there were still a couple of big questions left unanswered as the group prepared for the final exhibition, in which all eleven teams demonstrated their spea-kers, with awards given for both the students’ and professors’ favourites. The first question was whether their speaker would work — they hadn’t tested it yet. The second was both simpler and yet vastly more difficult.

They had to agree on what kind of music to play for the exhibition.

“ i t C a n ’ t b e the heaviest hip-hop because we lack the bass,” Mårtensson said with a laugh before the exhibition. “It will be something with a lot of midrange, probably guitar-based.”

In the end, the exhibition went well, and the group shared the professors’ award. They also played not one, but a series of songs. Which was their favourite? Jakobsson says it was Skeletons by Stevie Wonder. ■

“ It can’t be the heaviest hip-hop because we lack the bass,”Mårtensson said with a laugh before the exhibition. “ It will be something with a lot of

midrange, probably guitar-based.”


liquibus | corunt omnias


faCts and figureskth ee is growing fast, both in staff and in revenue. Over the past 12 months, the school’s funding from the eu has risen by 46 per cent, and the school had 115 active eu projects in 2012. The Swedish government also increased its investment in kth ee by an additional sek 22 million in 2012

Due to a greater demand for our research in general, the number of faculty has grown from 46 to 71 in the last six years, while the num-ber of doctoral students has gone up 34 per cent since 2007.


Over the past few years, kth ee's eu funding has risen substantially thanks to the many eu projects in which our researchers are involved. In the past 12 months alone, our eu funding has in-creased by 46 per cent to sek 66 million from sek 45 million in

2011, and now constitutes 36 per cent (28 per cent in 2011) of our total external funding. kth ee has the highest percentage of eu fund-ing within kth as a whole, with 20 per cent of the total.

The school had 115 active eu projects in 2012 (100 in 2011), with

European Institute of Technol-ogy & Innovation (eit) ict and Inno Energy projects more than doubling to 41 compared with 16 in 2011. Our involvement in the Euroatom programme remains strong, with 24 projects (31 in 2011). ■

kth ee's income has increased substantially during the past three years, partly thanks to a rise in eu funding, but also as a consequence of the Swedish government’s investment in strategic research areas. This resulted in additional funds of sek 22 million in 2012

(sek 15 million in 2011) for teaching faculty and research in the areas of energy, ict and transportation. Subsequently, these investments have led to an increase in operat-ing costs.

In order to enhance learning and research outcomes even

further, we have improved the school’s lab environment with three new facilities. sek 3.2 million was invested in three new labs: Smart Mobility; 3D printing; and the access Linnaeus Centre com-munication lab. ■

externAl fundinG

results: income And costs

eXTeRNAl fuNDING 2010–2012 (SeK MIllIoNS)

ReSulTS AND GoveRNMeNT CAPITAl 2006–2012 (SeK MIllIoNS)

eXTeRNAl fuNDING 2012

INCoMe 2010–2012 (SeK MIllIoNS)

0

20

40

60

80

Otherfunding

IndustryOthergovernment

funding

EUinstitutions

Swedish ResearchCouncil

201220112010

TotalSEK 361m

EU institutions, SEK 66m

Swedish Research council, SEK 51m

Other government funding, SEK 45m

Industry, SEK19m

Other funding, SEK 3m

20060

100

200

300

400

2007 2008 2009 2010 2011 2012

Revenues Costs Government captial Changes to capital

0

50

100

150

200

OtherContractresearch

External fundingGov. grants forresearch andpostgraduate

studies (FOFU)

Gov. grants forundergraduate

education (GRU)*

201220112010

facts & figures | external Funding and income and costs


Since the establishment of the school, the number of staff at kth ee has grown considerably. In six years, the number of staff members has increased 40 per cent, to 400 in 2012 from 284 in 2007.

The largest growth in staff numbers has been in the teaching faculty; over the past six years, the faculty has increased to 71 from 46 teachers, a rise of 65 per cent.

This was due, in part, to greater demand for our research in general during this period, which has at-tracted more external funding to the school. This additional funding has enabled us to recruit highly talented teachers and faculty members. Another factor was the increase (2010—2012) in the govern-ment’s investment in strategic research areas.

Along with the increase in the number of our academic staff, the number of doctoral students has also steadily risen — by 34 per cent since 2007 — with the increase in female students particularly notice-able over the past two years. Of 54 newly admitted students in 2012, 26 per cent (14) were women compared with 19 per cent in 2011 (6 out of 32 admitted students). ■

exceptionAl GroWth in stAff And fAculty numbers

NuMBeR of full-TIMe STAff

BReAKDoWN of full-TIMe STAff

GRoWTH IN TeACHING fACulTy 2007—2012

2006 2007 2008 2009 2010 2011 2012 2013

Men Women

0

50

100

150

200

250

total number of doctoral students, out of which 53 in 2012, 60 in 2011 and 62 in 2010 were financed through scholarships or by industry.

Faculty and researchers Doctoral students Technical sta 0

50

100

150

200

250

2007 2008 2009 2010 2011 2012

48Technical and administrative sta�

215Doctoral students

137Faculty and researchers

Total400

37Researchers/

Research engineers

215Doctoral students(including 86 doctoral students funded by grants and corporate support)

30Professors

24Administrators

25Associate professors

17Assistant

professors

10Technicians

28Postdoctoral

students

14Examination facilitators

Total400

Faculty and staff | facts & figures

RISING NuMBeRS of DoCToRAl STuDeNTS

“Faculty” includes professors, associate professors and assistant professors. “Researchers” comprises senior researchers, researchers and post doctorate students.


electrophysics 5 12 17

electrical power engineering 19 68 87

information and communications technologies, MeRit (erasmus Mundus) 3 12 15

network services and systems 7 47 54

smart electrical networks and systems (sense) 0 8 8

systems, control and Robotics 10 92 102

Wireless systems 16 59 75

total 60 298 358

Our Master’s of Science in Engi-neering students are enrolled in a five-year electrical engineering programme. In the following statistics, they are represented as bachelor degree students for the first three years of their pro-grammes and as master’s degree students during the last two. In 2012 there was an increase in the number of total applicants for the bachelor’s programme in electri-cal engineering compared with the year before, while first choice applicants remained at the same

level. Sixty-five students were enrolled in the programme in 2012, compared with 60 students in 2011. kth ee’s goal is to see continued growth in the programme over the next few years.

More than 1,100 international students applied for admittance to a master’s programme at the school (in the national admission system), approximately the same number as the year before. Due to the introduction of tuition fees, the overall number of students admit-ted to kth’s master’s programmes

had fallen in 2011, but in 2012 a larger number of students enrolled in the programmes and almost 17 per cent of these were women.

The master’s programme in Electrical Power Engineering (Master of Science in Engineer-ing) had the highest number of first choice applicants at kth ee in 2012, which made it a top-five choice within kth as a whole. Also in 2012, the first eight stu-dents enrolled in a new master’s programme, Smart Electrical Networks and Systems (sense), within the European Institute of Innovation and Technology (eit).

Students who enrolled in one of the five master’s programmes offered at the school (excluding merit and sense), came from a great variety of backgrounds. The majority had a bachelor’s degree from kth, but there was also a strong influx of students from both European and non-European countries. Recruiting more inter-national students will continue to be an area of emphasis for ee, particularly in master’s degree programmes.

Maintaining and establishing new international exchange agree-ments with important partner universities around the world is one of kth ee’s primary strategies

A GroWinG interest in mAster’s studies

MASTeR'S PRoGRAMMeS 2012 f M ToTAl

all students enrolled in a master’s degree programme given by or in connection with kth ee. exchange students are not included.

STuDeNTS PeR CATeGoRy

BSc students Master’s students Doctoral students2010 2011 2012 2010 2011 2012 2010 2011 2012

Male Female

0

100

200

300

400

500

600

700

800

facts & figures | education

number of students enrolled in bachelor’s, master’s and doctoral programmes in 2012. Master’s students also include exchange students. none of the courses at the bachelor’s degree level are given in english.


to maintain a high level of interest among Swedish students in spend-ing one or more semesters of their programme outside Sweden.

At the same time, attracting the best exchange students from inter-nationally top-ranked universities is of the highest priority. Enabling our national student population to exchange experiences, networks and intercultural knowledge, while studying together with their peers from abroad, is an important way of preparing our students for their future international careers.

kth ee attracted almost 140 exchange students in 2012, with most coming from France, China, Spain, Portugal and Singapore. Double- degree students also remain at the same level, with 30 students in 2012 compared with 28 in 2011. The majority (almost 50 per cent) came from L’Ecole Supérieure d’Electricité, France, and Universidad Politécnica de Madrid, Spain. ■

eDuCATIoNAl BACKGRouND of MASTeR'S STuDeNTS

BSc from KTH BSc from aEuropeanuniversity

BSc from a non-European

university

Double degree

Male Female

0

10

20

30

40

education | facts & figures

Background of all students who enrolled in a master programme at kth ee in 2012. exchange students are not included.

• BarcelonaTech, School of Tele-communication engineering

• Bauman Moscow State Technical University

• Ecole Centrale de Lille• Ecole Centrale Paris

• Ecole Polytechnique• Ecole Supérieure d’Electricité• Grenoble Institute of Technology• Keio University• Politecnico di Milano• Politecnico di Torino

• RWTH Aachen University• Technische Universität Darm-

stadt• Tohoku University• University of Madrid, School of

telecommunications engineering

DouBle-DeGRee CooPeRATIoN AGReeMeNTS


ee executive committee

2) stefan Östlund dean and chair

14) bo Wahlberg head of automatic control

1) rajeev thottappillil head of electromagnetic engineering

16) peter händel head of signal processing

15) mikael skoglund vice dean and head of communication theory

13) Gunnar karlsson head of communication networks

3) lennart söder head of electric power systems

5) per brunsell head of Fusion plasma physics

pontus Johnson head of industrial information and control systems (not pictured)

Arne leijon head of sound and image processing (not pictured)

lars blomberg head of space and plasma physics (not pictured)

håkan hjalmarsson director of Graduate education (not pictured)

11) lise-lotte Wahlberg head of administration

hans-peter nee head of electrical Machi-nes and power electronics(not pictured)

12) Göran stemme head of Microsystem technology

6) Agneta rune head of Finance

facts & figures | ee executive committee


strAteGic Advisory council

lars blomberg teacher (not pictured)

erika Appel administrative staff (not pictured)

teddy Juhlin henriksson Representative graduate studies (not pictured)

carl-michael Zetterling kth ict(not pictured)

3) lennart söder teacher

9) pia Grahn Representative doctoral studies

7) sara mazur head of Research ericsson aB

8) Joakim lilliesköld director of Undergra-duate education (visiting member)

14) bo Wahlberg teacher

ludvig Aarflot Representative graduate studies (not pictured)

10) sophia hober, kth’s representative (vice rector)

4) Jan scheffel teacher

magnus olofsson ceo elforsk (not pictured)

2) stefan Östlund dean

strategic advisory council | facts & figures

12 3 4

5

67

16

8

14

15

13

1211

109


liquibus | corunt omnias


thesesWith 173 master’s theses, 28 doc-toral theses and 27 licentiate thesis in 12 areas, from communication networks and theory to electri-cal energy conversion and space and plasma physics, kth ee is committed to pushing the limits of human knowledge and maintain-ing its position as a world-class educational institution.


doctorAl theses

piergiuseppe di marco Modeling and design of Wireless protocols for networked control applicationsmagnus minnema lindhé communication-aware Motion planning for Mobile Robotsoscar flärdh Modeling, control and optimization of the transient torque Response in downsized turbocharged spark ignited engines

ilias chatzidrossos live streaming performance of peer-to-peer systems

Jinfeng du cooperative strategies in Multi-terminal Wireless Relay networksZhongwei si structured ldpc convolutional codes

rujiroj leelaruji Methods for synchrophasor-Based power systeminstability detection and hvdc controllars Abrahamsson optimal Railroad power supply system operation and designkatherine elkington the dynamic impact of large Wind Farms on power system stability

kelin Jia high Frequency Model of electrified Railway propulsion system for eMc analysishui li decoupling and evaluation of Multiple antenna systems in compact MiMo terminalsAlireza motevasselian electromagnetic simulation, analysis and design with application to antennas and Radar absorbers

darya ivanova plasma-Facing components in tokamaksk erik J olofsson nonaxisymmetric experimental modal analysis and control of resistive wall Mhd in RFps

Automatic control

Communication Networks

Communication Theory

electric Power Systems

electromagentic engineering

fusion Plasma Physics

theses | doctoral theses


ulrik franke analysis of enterprise it service availabilitynärman per enterprise architecture for information system analysisteodor sommestad a framework and theory for cyber security assessments

Andreas c. fischer integration and Fabrication techniques for 3d Micro- and nanodeviceshenrik Gradin heterogeneous integration of shape Memory alloysfor high-performance Microvalvesnutapong somjit novel RF MeMs devices for W-Band Beam-steering Front-endsmikael sterner Monocrystalline-silicon Based RF MeMs devices

per landin digital Baseband Modeling and correction of Radio Frequency power amplifierssamer medawar pipeline analog-digital converters dynamic error Modeling for calibrationcharles nader signal shaping and sampling-based Measurement techniques for improved Radio Frequency systems

cecilia möller design and experiments with high power Microwave sourcesJonas olson plasma and dust interaction in the magnetosphere of saturnsoheil sadeghi Multi-spacecraft observations of the auroral acceleration Regionpanagiotis tolias the klimontovich description of complex plasma systems

Industrial Information and Control Systems

Micro and Nanosystems

Signal Processing

Space and Plasma Physics

doctoral theses | theses


licentiAte theses

mariette Annergren adMM for l1 Regularized optimization problems and applications oriented input design for Mpcfarhad farokhi decentralized control design with limited plant Model informationper hägg Using structural information in system identificationchristopher sturk structured Model Reduction and its application to power systemsAndré teixeira herdeiro toward secure and Reliable networked control systems per hägg Using structural information in system identificationZhenhua Zou Real-time wireless communication with per-packet deadlines

Automatic control

sylvia todorova kouyoumdjieva opportunistic content distribution


hamed farhadi interference alignment and power control for wireless interference networksfrederic Gabry cooperation for secrecy in Wireless networksmaksym Girnyk cooperative communication for multi-user cognitive radio networksdennis sundman compressed sensing

Geofrey bakkabulindi planning Models for single Wire earth Return power distribution networksyuwa chompoobutrgool concepts for power system small signal stability analysis and Feedback control design considering synchrophasor Measurementscamille hamon on Frequency control schemes in power systems with large amounts of Wind powerrichard scharff on distributed Balancing of Wind power Forecast deviations in competitive power systemsyelena vardanyan on stochastic optimization for short-term hydropower planning

kalle ilves Modeling and design of Modular Multilevelconverters for Grid applicationsnaveed ur rehman malik analysis and control aspects of Brushless induction Machines with Rotating power electronic converters



electrical energy Conversion

theses | licentiate theses


mohamad Ghaffarian niasar partial discharge signatures of defects in insulation systems consisting of oil and oil-impregnated paperrespicius clemence kiiza effect of hv impulses on partial discharge activity in oil-impregnated paper insulationseyed Ali mousavi electromagnetic Modelling of power transformers with dc Magnetizationxiaolei Wang partial discharge analysis at arbitrary voltage Waveform stimulushelin Zhou some properties of lightning Flashes to a tall tower on a Mountain top

lars Josef höök variance reduction methods for numerical solution of plasma kinetic diffusion

chunqing huo Modeling high power impulse Magnetron sputtering dischargesetienne koen a simulation approach to high-Frequency plasma Waves




licentiate theses | theses


mAster theses

elisabetta Alfonsetti privacy preserving car-parking: adistributed approachbehdad Aminian Gisoo: a virtual testbed for Wireless networked control systemsAntonio balsemin applications oriented input design for Mpc: an analysis of a quadruple water tank processAntonio bertoldi Modeling studies for the detection ofbacteria in Biosensor Water distribution networksmattias björklund online detection of evasive Maneuvers for heavy duty vehiclesAldo boniforti adaptive scheduling in intelligent transportation systemsmichele colledanchise stabilization and collision avoidance of non-point agents in dynamic environments: a potential Field approachivar cornell implementation of a collection tree Routing protocol and a predictive outage compensatorAndersson eric motion classi cation and step length estimation for Gps/ins pedestrian navigationfredrik Gabrielsson Model predictive control of skeboå Water systemsergej Golfinger event-triggered control for synchronizationJosé Antonio Gutiérrez García indoor localization Based on Radiochannel parameters in Wireless sensornetworksmuhammad rashid khan performance and route stability analysis of Rpl protocolGeorg Alexander kiener event-triggered control subject to actuator saturationAxel klingstein Multi-agent testbed development, modelling and control of Quadrotor UavsJérémy lesprier a general controller design framework using h8 and dynamic inversion for robust control in the presence of uncertainties and saturationsZhe li performance analysis of network assisted neighbor discovery algorithmsdaniel macias Ajaillo estimation of Fuel consumption for Real time implementationAlejandro marzinotto cooperative control of Ground and aerial vehiclesfrancesca madia mele a model-based approach to hvac fault detection and diagnosiselin nordahl optimal heating in the smart electrical Gridcatharina nyström towards a fully computer controlled test rig for low pressure parts in trucksdario papale a model-parameter invariant approach to hvac fault detection and diagnosissun pei noise Resistant least squares Based adaptive controlmekikis prodromos-vasileios design and implementation of a Wireless sensor network for smart home applicationspouria ramazi variance analysis of parallel hammerstein Modelsfelix ruiz calvo towards a highly accurate Mental activity detection by electroencephalography sensor networksmani sanei nurmi optimization and cost-eectiveness for estimating shock absorber statesthoralf A. schwarz Uncertainty analysis of a Fault detection and isolation scheme for Multi-agent systemsfrancesco scotton Modeling and identification for hvac systemshenrik sivard development and implementation of a controllable thermostat for an engine cooling systempatrik thede development of advanced air conditioncontroller for urban busesnicolas vinikoff numerical control: performance analysis and implementation issuesJakob Wallander implementation of a Wireless control systemJonas Wu scheduling smart home appliances in the stockholm Royal seaport

Automatic control

theses | Master theses


fabio di Giovanni a study of saic for oFdM downlink transmissionnavid faradjzadeh a tool For online packet analysis inMobile networksnavid hassanzadeh scalable data collection for Mobile Wireless sensor networkssrivatsan Jagannathan comparison and evaluation of open-source cloud Management softwareAnastasios karagkounis locality awareness and isp-Friendlinessfor p2p live streaming applicationsxinyun li lte uplink scheduling in multi-core systemsshahid murtaza implementation and evaluation of a Json Binding for Mobile Web services with iMs integration supportminh duc nguyen application-aware scheduling in Multichannel Wireless networks with power controlQuang huy nguyen playout adaptation and pull-push hybrid scheduler in live peer-to-peer streamingAlexandre vizcaino luna characterizing Wlan channel occupancy for cognitive networking

tanakorn chareonvisal implementingdistributed storage system by network coding in presence of link FailureGuanglei cong pico cell densification study in lte heterogeneous networksfatou ndiaye proof-of-concept of bi-directional broadcast communicationAwassada phutathum implementing distributed storage systemsby network coding and considering-com-plexity of decodingQiang Wen interference management for multiple access relay channel in lte-advanced using nested lattice

ludovic Autran convergence of day-ahead and future prices in the context of european power market coupling: historical analysis of spot and future electricity prices in Germany, France, netherlands and Belgiumpedro benedicto martínez study of interaction between spot Market and Market for Balancing servicescédric bureau developing a harmonic power flow software in distributed generation systemsvincent cazaux decision method for the investment in shunt capacitors based on a long-term voltage stability analysismatthieu chaigneau Forward capacity Markets: Maintaining Grid Reliability in europeboris dadvisard the comparison of the tool parsifal with two mid-term planning tools for the electric production of isolated systemsAli erbay parameter study of Ferro-Resonance with harmonic Balance Methodomobobola faleye Modelling demand Uncertainties in Generation-transmission expansion planningmostafa farrokhabadi automated topology processing for conventional, phasor-assisted and phasor-only state estimatorsolga Galland the short-Run security-constrained economic dispatchxiang Gao Remedial action schemes derived from dynamic security assessmentmaxime Guymard Modeling of technical losses in thesenegalese transmission anddistribution Grids and determination of non-technical losseshany ibrahim evaluation methods for market models used in smart gridsdella Jose comparison of a three phase single stage pv system in pscad and powerFactoryJan lavenius an algorithm for Finding Minimal load interruption costs




Master theses | theses


farhan mahmood improving the photovoltaic Modelin powerFactoryvistica marko value of stochasticity in hydropower planning optimizationmaria Alejandra noriega odor optimal transmission switchingfor Reducing Market power costfredrik obel Balansering av en storskalig vindkraftsutbyggnad i sverige med hjälp av den svenska vattenkraftenmahir sarfati Modeling the diversification benefit of transmission investmentsbahramirad shaghayegh economic and emergency operations of the storage system in a Microgridmikael skillbäck, hany ibrahim evaluation Methods for Market Models Used in smart Gridsmarko vistica value of stochasticity in hydropower planning optimization

electric Power Systems (contd.)

Alessandro Acquaviva analytical Modeling of iron lossesfor a pM traction Machinenaveed Ahmad khan power loss Modeling of isolated ac/dc convertermalik usman Akhtar variable speed drive as an alternative solution for a micro-hydro power plantArman derviškadić comparison of different Methods to Measure submodule capacitor voltages of Modular Multilevel converters for hvdc applicationsAli el hafni FpGa Based sensorless control of a permanent Magnet synchronous Motorricardo huaytia fernandez skin and proximity effect analysis of traction motorfabien hubert optimization of the electric car's autonomy and the charger's technologydavid Jahanbakhsh implementation of dc-dc converter with maximum power point tracking control for thermoelectric generator applicationsJohn laury optimal power Flow for an hvdc Feeder solution for ac RailwaysRosa macías cubeiro development and implementation of a search and locate actuator systemmohamad mahmoudi thermal modelling of the synchronous Reluctance Machinedavid martínez design of a permanent-Magnet synchronous Machine with non-overlapping concentrated Windings for the shell eco Marathon Urban prototypeJoakim odnegård Fault impact Mitigation in Grid connected convertersmattias rahm controller-inverter for sensorless permanent Magnet synchronous Motorsmuhammad salman analysis, design and control aspects of linear machines using co-simulationusman shaukat performance analysis of Unskewed asymmetrical Rotor for lv induction Motorssanchit singh iGct transient analysis and clamp circuit design for vsc valvesmichael sundkvist laddning av kondensatorbank med flyback-omvandlareyang yu synchronous Machine for Unidirectional application

erik Johannes, Aagaard fransson, tobias Wall-horgen Building and evaluating a 3d scanning system for Measurementsand estimation of antennas and propagation channelsGustav casselbrant domain decomposition Methods for Finite periodic structures in electromagneticsmikael cederlöf inductive charging of electrical vehicles — system studycyril condez-Godziemba transmission system operational Risk assessment and MitigationAhmed farrag non-contact high voltage Measurements: Fe calculationspatrick Janus acoustic emission properties of partial discharges in the time-domain and their applicationsying-chun lai a development of a common-Mode FilterUsing an eBG structure in high speed seriallinksAlaleh mashkouri najafi indoor path loss Modeling and Measurements at 2.44 GhzJavier navarrete, pablo-romero power Quality for distributed Wind power Generation

electrical energy Conversion




sabina stenberg evaluating the detail level of reliability analyses used in the investment planning at Fortum distribution aBdaniel söderman a 2d indoor propagation Model Based on Waveguiding, Mode Matching and cascade couplingArun subramanian venkataraman Mechanical design for the characterization of charge propagation in solid-liquid insulationkun Zhao interaction between the Radiation of lte MiMo antennas in a Mobile handset and the User's Body

cristian Gleason-González development of Resistive Mhd code in cylindrical Geometry and its applications on eXtRap t2Rhawra moustaphawi effect of magnetic boundary on edge plasma profiles studied using probe measurements in eXtRap t2Rhugo Alberto rodriguez peraza studies of Radial correlation Reflectometry to characterize the turbulence of Fusion plasmasJosé tarcísio costa preparation and characterization of ods-alloys for Fusion Reactor applicationsJeronimas tautvydas maceina trapping of plasma components in neutron irradiated tungsten: atomistic studydina tretiak simaltenous data acquisition and analysis of a Five-port Mitre Bend coupler for in-situ Measurement of higher-order Wavequide Modes

miftah Al karim pMU data Mining in and analysis of suitable algorithm for fault pattern recognitiondavood babazadeh Modeling of Wide area Monitoring system as a cyber physical systemthibaut bazatolle logistical issues in a transnational supply chain projectmercedes camara Jurado visual planning in lean product developmentZhenwei chen virtual power plant simulation and control scheme designAriyan fazlollahi Benefits of enterprise integration systemssebastian Grunow automated enterprise service Bus Based enterprise architecture documentationerik hammarbäck analyzing the impacts of Future Requirements From the energy sector on vattenfall's it landscapexue han Quantitative analysis of distributed energy Resources in Future distribution networkslaura Jurado lara implementation of design for six sigma on Mass customization companiesZeeshan Ali khurram interface Between process equipment and process Bus for light Weight testing of protection FunctionsQuentin lambert Business Models for an aggregatorGaspard lebel household aggregators development for demand Response in europemagnus lindqvist värdeflödesanalys av reklamationsprocessen på aBB control productsJamshid mirbaz säkerhetsstyrning inom den Finansiella sektornmathias possne Ramverk för enterprise architecture på slpeter rosell enterprise architecture Modeling of core administrative systems at kthmargus välja determinants of the ease of hackingpengcheng Zhao iec 61850-9-2 process Bus communication interface for light Weight Merging Unit testing environment

electromagentic engineering (contd.)


Industrial Information and Control Systems



maxime philippe ettori a new electrostatic precipitator for breath-borne aerosol: preliminary study and testspontus frössander an automated test system for error simulation in anaesthesia devicesAlexander Ghebru Metodik för testning av styrsystempatrik kroner Modeling and evaluation of Remote temperature and conductivity sensor Using Radio Frequency identification tagsGleb lobov study of the corona discharge phenomenon for application in pathogen and narcotic detection in aerosolstefan Wagner novel micromechanical bulk acoustic wave resonator sensing concepts for advanced atomic force microscopy

pazi Alli idd channel estimation in mobile wireless systemsJose borras sillero sensor fusion methods for indoor navigation using UWB radio aided ins/dRvanessa bélec a practical analysis of the eects of opportunistic nulling in lte-based systemsGuillem casas barcelo image-Based Floor segmentation in visual inertial navigationdavid colomar simón step-wise smoothing of zUpt-aided inshisham el-shaer interference Management in lte-advanced heterogeneous networks Using almost Blank subframeslinda malin erlendsdottír Gps with Real time kinematics on communicator 200chengzhou Jin discrete cosine transform for pre-coded eGpRsZilong Ju Fast viterbi decoder algorithms for Multi-core systemJohan kristensen implementering, utvärdering och karakterisering av punktdiskriptorer för realtidsbehandling av fotodata för kamerastödd tröghetsnavigeringnicolas le dortz digital mismatch compensation in time-interleaved adcsferran pedrera rubio cooperative localization algorithms in ultra-wideband systems for indoor positioningdongping Qiu development of scoring algorithm for karaoke computer Gamestobias rådeskog tamper sensing using low-cost accelerometersolov samuelsson video tracking algorithm for Unmanned aerial vehicle surveillance

hequn bai Mobile 3d visual search based on local stereo image Featuresper lindström Restore sound Quality of old Records, Using statistical estimation Based on several copies of the same original Recordingxiaohua lu h.264-compatible temporal subband coding of Background soccer videoJulien richy compressive sensing in Medical Ultrasonography

Micro and Nanosystems

Signal Processing

Sound and Image Processing



robin bramsäter topography and morphology analysis of marine nanoparticles and a pedagogical study of representations used for improving a high school experimenterik fors time and space Resolved Measurements from Rocket engineslaia Gasparin pedraza particle in cell simulations of electrostatic Waves in saturn's Magnetosphererobert hällqvist temperature control of space simulation chambermagni Johannsson optimization of solid Rocket Grain Geometriessofhia Josborg test and analysis of an atmospheric aerosol collection technique and school outreach within a ReXUs projectGuillaume langin study of scattered light generated by silicon carbide mirrorsrobin linde liquid Monopropellant injector development for high power electrodeless plasma thrustermatthieu masselin development of a hybrid pic code for the simulation of plasma spacecraft interactionsAleksander slavic theoretical studies of plasma detachment in the vasiMR magnetic nozzletheodor-Adrian stana implementation of a data handling system for a scientific Magnetometer on a cubesatnoravidhya tanapura preliminary Mission analysis and design for a small satellite sWaRMmoysis tsamsakizoglou Radiation tolerant satellite communication ModemAlexander Wahlberg learning in student projects and morphological analysis of arctic particlesJunjie xu effect of escaping photoelectrons on the magnetic field of Mercury



Produced by kth ee and JG CommunicationTexts: Marie Androv, Peter Larsson, Petra Malm, David Callahan, Benny Ritzén and Nathan Hegedus.Cover photo: Håkan Lidgren.Printed by Erlanders 2013

www.kth.se/ees

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