VENSYS ENERGY AG

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Genius is found in simple things. J.W. v. Goethe

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Idea Brilliantly simple

History Milestones since 1990

The Company VENSYS Group

Partners VENSYS Licensees

Technology Five Features

The Generator

Permanent Magnet Technology

The Blade Pitch System

The Grid Connection

The Air Cooling System

Wind Turbines 1.2 MW Platform

1.5 MW Platform

2.5 MW Platform

Service Our Focus: Your Turbine

References Worldwide

Contact

Idea Brilliantly simple

More than 13,000 megawatts on the grid

VENSYS ENERGY is a leading manufacturer of gearless wind turbines: More than 8,700 VENSYS wind turbines have already been connected to the grid worldwide, totaling more than 13,000 MW.

VENSYS wind turbines offer cutting-edge technology: Gearless, with permanent mag-net excited multi-pole generator and VENSYS converter system. With a maintenance-free toothed belt drive for the blade pitch system. The 2.5 MW platform comes with rotor dia-meters of 100m, 109m and 112m – with a distinctly low tower head mass.

Meeting grid requirements around the world

Our wind turbines are limited to a small number of high-quality and long-life compo-nents. VENSYS wind turbines deliver reliable energy thanks to technological innovation, compact design, high energy conversion efficiency and minimum maintenance work – under whatever climatic conditions. VENSYS wind turbines are on the grid where it mat-ters most, namely in the important growth markets for wind energy: China, India, Canada, the USA, Germany, Poland, Portu-gal, Brazil. Thanks to the VENSYS converter system, they fully meet the requirements of the various grid operators.

»The combination of compact design, efficient

energy conversion and intelligent control system

means that yields are maximized and downtimes minimized – even in different environments and

grid conditions that vary from region to region.«

Dipl.-Ing. Jürgen Rinck, CEO

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HistoryThe Path to Technological Leadership Milestones since 1990

More than two decades experience in permanent magnet technology

Originally a spin-off of the University of Ap-plied Sciences of the Saarland, VENSYS can look back on more than twenty years‘ experi-ence with gearless wind turbines. Licensees all over the world are the driving force behind our expansion in the important markets. With wind energy pioneer Hugo Denker (2002) and Goldwind Windenergy GmbH (2008) coming on board, VENSYS was in a position to continue growing, start serial production in Germany and also set up VENSYS Elektro-technik GmbH.

The only way to stay true to yourself is by changing

As of now, VENSYS wind turbines with more than 13,000 megawatts are on the grid worldwide. The VENSYS 1.5 MW plat-form is the best-selling gearless wind tur-bine of our time in the 1.5 megawatt class.

With the VENSYS 2.5 MW platform, there is now a solution available for the multi-mega-watt range which makes it possible, among other things, to economically generate en-vironmentally-friendly electricity even in in-land areas where wind levels are low.

2012 · Serial production of the 2.5 MW turbine; entering of new markets

2011 · World market leader in gearless 1.5 MW turbines

2010 · The VENSYS 2.5 MW platform is put into operation in Germany and China; AOI becomes a licensee

2008 · Incorporation of VENSYS Elektrotechnik GmbH; Goldwind joins VENSYS Energy AG

2007 · The first VENSYS 1.5 MW turbines are put into operation in Germany. Renaming of the company into VENSYS Energy AG; new licen-sees: ReGen Powertech (India) and IMPSA wind (Brazil)

2004 · Eozen (Spain) becomes a licensee

2003 · Goldwind (China) becomes a licensee

2002 · Wind energy pioneer Hugo Denker joins the company

2000 · VENSYS Energiesysteme GmbH & Co. KG is incorporated

1997 · Following years of research, the GenesYs 600 prototype is put into operation in Germany

The Forschungsgruppe Windenergie develops gearless wind energy

1990 · The Forschungsgruppe Windenergie is founded at the University of Applied Sciences of the Saarland (HTW)

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VENSYS Company Headquarters in Neunkirchen/

Germany.

Subsidiary VENSYS Elektrotechnik in Diepholz/

Germany.Prototyp GenesYs 600

MW installed (worldwide, in 1,000 MW)

Aggregate

13,300 MW

1.5 MW 2.5 MW

Company historyPlatforms and MW installed

VENSYS 62 (1.2 MW)

1.5 MW Platform

2.5 MW Platform

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The CompanyVENSYS Group

VENSYS Elektrotechnik GmbH

Our subsidiary VENSYS Elektrotechnik GmbH, which is based in Diepholz, produ-ces VENSYS full power converter systems as well as switchgear, controls and pitch systems. The full power converter systems are adapted to the national and regional grid connection regulations/grid codes. They fea-ture high energy conversion efficiency and support the grid in the event of voltage drops (low-voltage ride-through – LVRT).Since 2011 VENSYS Elektrotechnik GmbH has also been involved in the solar industry. The converters developed and manufactu-red in Diepholz are being used in increasing numbers in solar parks and on solar roofs.

NEVEN Windenergie GmbH

NEVEN is a subsidiary of VENSYS Energy AG. It was set up in 2011 to support the development of wind turbines in the region Saarland/Rhineland Palatinate with expertise and experience.

Major services include competent, compre-hensive consulting, location planning, pro-ject development including the acquisition of space and building permits as well as the purchasing of necessary components and services. In addition, the company provides project and time planning for the logistics and preparation of the wind turbine as well as support with its erection.

PartnersVENSYS Licensees

A model of success – worldwide

VENSYS wind turbines are not just built in Germany these days but all over the world by our licensees. They operate successfully in a dozen different countries, particularly in the important growth markets.

Goldwind has erected more than 7,700 VENSYS turbines of the 1.5 MW platform as well as over 100 VENSYS turbines of the 2.5 MW platform in China and the USA, making the company one of the leading players in China and the rest of the world.

Eozen is active in Spain and Portugal.

ReGen Powertech is one of India’s largest manufacturers of gearless wind turbines with over 500 turbines erected and full order books.

IMPSA wind is among the market leaders in Brazil, having installed more than 200 turbi-nes there.

The Egyptian state-owned company A.O.I. is our latest licensee which is currently develo-ping the most important African market.

*as of 12/2012

Goldwind Science & Technology Co. Ltd.www.goldwind.cn

Licensee since 2003

PR China

Eozenwww.eozen.es

Licensee since 2004

Spain

ReGenPower Tech Ltd.www.regenpowertech.com

Licensee since 2007

India

IMPSA windwww.impsa.com

Licensee since 2007

Brazil

A.O.I. Arab Organisation for Industrializationwww.aoi.com.eg

Licensee since 2010

Egypt

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TechnologyFive Features

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What counts in the deserts of China is

simple yet reliable high-quality techno-

logy with a minimum of maintenance.

Proven time and again

The basis of success

The success of VENSYS wind turbines is based on five distinctive technological features founded on the basic principle of generating the maximum amount of energy while minimizing losses.

Keeping the number of components to a minimum

Beyond that principle, the VENSYS design philosophy is very simple: limit yourself to few high-quality construction parts, reduce the number of wear parts and only use dura-ble components.

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Direct Drive

VENSYS relies on direct drive technology. The rotating speed of the rotor is transferred directly to the multi-polar generator – dispensing with the need for a high-maintenance gear unit that is susceptible to wear.

Permanent Technology

Permanent magnets are fixed to the rotating part of the generator. Excitation power thus saved is fully available as additional energy yield.

Full Power Converter System

VENSYS converter systems feature power plant properties and comply with the requirements and regulations of variousgrid operators.

VENSYS Pitch System

VENSYS uses patented blade pitch systems with triple redundancy. One special feature is the proven toothed belt drive which is lubrication-free and minimizes maintenance.

Air Cooling

VENSYS cooling systems are convincingly simple and robust at the same time – either as a passive external air cooling system or as a closed system with a heat exchanger.

TechnologyThe Generator

We don‘t bother with a gear unit – you shouldn‘t, either!

VENSYS wind turbines don‘t need high-main-tenance gear units that are highly suscepti-ble to wear. They are based on the genera-tor concept of a synchronous machine with permanent magnet excitation. The rotating speed of the rotor is transferred directly to the multi-polar generator. The gearless tech-nology combined with savings in excitation power result in a higher energy yield.

With the 1.5 MW platform, the generator is cooled by outside air. The VENSYS frequen-cy converter is also air-cooled.

Large rotor and low tower head mass

In the VENSYS 2.5 MW platform, the cooling system is a closed circuit. The air-to-air heat exchanger eliminates the need for additio-nal cooling fluid. The full enclosure protects the winding and the interior of the generator from external influences, such as salty and humid air, dust and dirt.

The VENSYS 2.5 MW platform comes with rotor diameters of 100m, 109m or 112m, thus increasing the yield significantly. Thanks to the compact design, its tower head mass is remarkably low.

Direct drive without compromise. The force of the

rotor is transferred directly onto the generator –

without a wear-prone gear unit.

Gearless VENSYS wind turbines are now being

manufactured on several continents – for instance

in Xian/China, as shown here.

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View of the generator winding:

Robust – the winding is perfectly

suitable for use in virtually all regions.

Vital winding

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TechnologyPermanent Magnet Technology

High energy conversion efficiency = higher yield

VENSYS makes it possible to utilize perma-nent magnet technology as used in electric drives in navigation and electric vehicles for wind energy technology.

VENSYS wind turbines are equipped with a directly driven synchronous generator with permanent magnet excitation. High-quality permanent magnets are fixed to the outer shell of the rotor. Simple yet innovative.

No excitation losses = even higher yield

In contrast to electrical excitation, perma-nent magnet technology does not have the disadvantage of additional excitation losses. The savings in excitation power are thus fully available as additional energy yield in VENSYS wind turbines.

This is a major asset especially in the parti-al-load range and helps to reduce the heat in the generator. Also, there is no need to transfer the excitation power with slip rings.

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The working principle of a permanent magnet generator — simplified presentationPermanent magnets fixed alternately to the

(external) rotor rotate around a stator (here with

three windings). All VENSYS wind turbines are

constructed according to this basic principle.

Rotation

Permanent magnets

Stator

Permanent magnets

Rotor (external)

Rotation

This magnet in the VENSYS rotor

saves excitation power and tower

head mass.

Neodymium-iron-boron

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Low-wear and low-maintenance toothed belt drive

One special technical feature of VENSYS wind turbines is the lubrication-free and low-main-tenance toothed belt which transmits the force between the pitch drive and the blade. Our drive system minimizes wear and incre-ases safety.

The drive of the blade is equipped with an energy storage device (capacitor) which makes it possible to drive the blades into braking position in the event of a grid black-out. The capacitors can deliver the necessary power even in low temperatures. An additio-nal asset is their long service life.

Reducing forces and minimizing wear

Our innovative toothed belt drive for the blade pitch system has stood the test of time: for more than 17 years now. In more than 8,700 wind turbines around the world – and under the most different regional con-ditions: in strong wind areas just as much as on inland sites with increased hub height.

TechnologyThe Blade Pitch System

VENSYS components offer a long

service life and high-quality workman-

ship – Seen here: the blade pitch system

with toothed belt drive.

Solid materials

The VENSYS blade pitch system with triple

redundancy uses the innovative, low-wear and

low-maintenance toothed belt drive.

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TechnologyThe Grid Connection

Connection with power plant properties

The infeed of short-circuit current, the quick separation from the grid or the opposite, the bridging of short-term voltage drops in the grid: All these are power plant properties offered by VENSYS wind turbines. Thanks to our full power converter system developed especially for this purpose, they meet the requirements and regulations of the various grid operators.

Meeting various grid requirements

The total power produced is directed via a VENSYS converter, which makes it possible to decouple the generator fully from the grid. This means that faults or voltage fluctuations in the grid cannot affect the control behavior of the VENSYS wind turbine.

The converter covers a wide idle power range (see graphic) and is able to support weak grids as well. Specifically for the German market, VENSYS wind turbines have been certified for the systems service bonus (Systemdienstleistungsbonus – SDL), thus meeting a legal requirement for a higher remuneration for electricity fed into the grid.

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Signed and sealedThe certificate for power plant properties in

accordance with the German System Service

Ordinance EEG 2009/SDLWindV confirms the

“grid compatibility” of VENSYS wind turbines and

is a legal requirement for a higher remuneration for

electricity fed into the grid in Germany (systems

service bonus).

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Effective power and idle powerDepending on the areas shown, idle powers (Q)

can be requested through external specifications

within the effective power (P).

(Qualitative presentation)

P (kW)

0.9 cap.0.9 ind.

0.925 cap.0.925 ind. 0.95 cap.0,95 ind.

0 Q (kVAr)

VENSYS converters cover a wide

idle power range and offer versatile

parameterization.

Converter technology

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TechnologyThe Generator Cooling

Air cooling for the heart of the system

The generator is one of the core elements in the nacelle of any wind turbine. Generating electricity always entails the loss of heat, causing the copper windings to heat up. To avoid damage to the generator, the heat must be dissipated. VENSYS generators in 1.5 MW platforms are cooled making use of the external air flowing in directly through the cooling fins (see illustration below).

1 Air-to-air heat exchanger

2 Internal cooling circuit Generator cooling

3 Outer cooling circuit External air

Clean air instead of additional working materials

As the generator in the 2.5 MW platform has higher power density, VENSYS development engineers have taken the cooling concept to a higher level. The result: A fully encap-sulated active air cooling system with an air- to-air heat exchanger. Clean air flows through the stator winding and dissipates the heat where the highest temperatures occur (see illustration on the right side).

An equally robust and effective system which completely dispenses with additional working materials such as cooling liquids or oils – a step in the right direction, also from an ecological point of view.

1.5 MW platformAir cooling used with the VENSYS 1.5 MW platform –

the outer air is led via special cooling channels along

the generator housing.

2.5 MW platformAir cooling used with the VENSYS 2.5 MW platform,

featuring two circuits.

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VENSYS 1.2 MW PlatformThe Pioneer

VENSYS 1.5 MW PlatformThe Successful One

The 1.2 MW platform is the technological foundation for the successful range of VENSYS models. The first turbine in Germany (2003) was followed by others in China and Canada.

The VENSYS 1.5 MW platform is the world’s best-selling gearless 1.5 MW turbine – with more than 8,000 turbines installed around the globe. Innovative and proven time and time again.

For special wind park requirements

Simply innovative. Gearless and with per-manent magnet technology instead of ex-citation power and gearbox losses. With an air-cooled generator and air-cooled VENSYS frequency converter for the most diverse grid requirements.

With a low-maintenance blade pitch system using a toothed belt drive instead of the traditional drive pinion.

Four different rotor diameters

With more than 8,600 turbines worldwide, the 1.5 MW platform today is the best-selling gearless wind turbine of its class.

70, 77, 82 and 87 meters: Offering a choice between four different rotor diameters, it is suitable for the most diverse wind zones.

Particular benefits

Dispensing with a gearbox means higher energy yields, especially in the partial-load range

High-quality permanent magnets save excitation power, resulting in additional higher energy yields in the partial-load range

Innovative toothed belt drive for the blade pitch system

1 NacelleCompact design thanks to gearless technologyEnvironmentally friendly: extremely low amounts of oilSmall number of components

2 PM generatorPermanent magnet excitation: no power loss due to separate excitation, a particular advantage in the partial-load rangePassive cooling: No power loss caused by an active cooling systemLow-maintenanceLow-voltage-ride-through technology

3 Blade pitch system with toothed beltCompact and efficient designNo lubrication requiredImpervious to humidity and dirtLow-maintenance, low-wearEasy to replace

4 Pitch driveCapacitors for emergency power supplyTemperature-resistantLong service life

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1 PM generatorEfficient and compact generator technology, low-maintenanceClosed generator cooling systemMaximum rotating speed variabilityLow-voltage-ride-through technology

2 Blade pitch system with toothed belt

Compact and efficient designNo lubrication requiredImpervious to humidity and dirtLow-maintenance, low-wearEasy to replace

3 Pitch driveCapacitors for emergency power supplyTemperature-resistantLong service life

4 Integrated rotor bearingGrease-lubricated 2-row taper roller bearing Specifically light-weight bearing structureCompact design, easy access to the rotor area

5 Air-to-air heat exchangerSimple and robust cooling system design – no additional cooling agents are required

Simply innovative. With a significant increase in performance – and yet so compact. With a rotor diameter extended to 100, 109 and 112 meters for most high-wind and low-wind sites.

Fully encapsulated and equipped with an innovative cooling system

The VENSYS 2.5 MW platform is the soluti-on for the multi-megawatt range. Gearless and with permanent magnet technology instead of excitation power and gearbox los-ses. With a sealed, fully encapsulated gene-rator interior and a heat exchanger cooling system. And with an even more compact toothed belt drive for the blade pitch system – low-wear and low-maintenance. Because less is more.

With an extended rotor diameter

VENSYS has significantly expanded the ro-tor diameter in the 2.5 MW class – to 100, 109 and 112 meters – for use in most wind regions.

In spite of these changes, the tower head mass is still remarkably low.

Particular benefits

Dispensing with a gearbox means higher energy yields, especially in the partial-load range

Full enclosure of the generator interior and the heat exchanger cooling system provides protection from salty and humid air, dust and dirt

An even more compact blade pitch system at the toothed belt drive means a lower tower head mass despite higher perfor-mance and a larger rotor

VENSYS 2.5 MW PlatformThe Favorite for the Multi-megawatt Class

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ServiceOur Focus: Your Turbine. Around the clock

Our “Comprehensive care-free package”

Making sure VENSYS wind turbines per-form at their best over decades is what the VENSYS Service team is motivated by. We can control your wind turbine 24 hours a day using remote data monitoring.

Around the clock, year in, year out. As a client you can log into your wind park or re-ceive e-mail notifications from us to keep you informed at all times about the current status and the kilowatt hours produced.

Services are coordinated globally by office-based VENSYS employees via our cooperati-on partners on site. The office also provides competent client support for all technical and economic questions.

We offer a full maintenance agreement which includes all repair and service work – on a long-term basis. Additionally, we gua-rantee you high turbine availability.

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…VENSYS offers additional security:

24-hour remote data monitoring and

trained staff on location.

All over the world…

Experienced VENSYS staff guarantee you high

service and maintenance quality – any place,

any time.

Inspection, maintenance and repairs are standard

services. But VENSYS also contributes to better

performance and higher yields.

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Installed power

of VENSYS wind turbines in MW* according to countries/regions

Production facilities

*as of: 12/2012

ReferencesWorldwide

Brazil Egypt India Spain Germany

BulgariaPolandRomania Russia

USA

China

Production facility

Urumqui · Beijing · JiuquanXi’an · Baotou · Dafeng CityFuxin City

Production facility

Tada (Andhra Pradesh)

Production facility

Aen Sokhna (planning stage)

Production facility

Ferreira (Granada)

Production facility

Suape (Cabo de Santo Agostinho)

Production facilities

Neunkirchen (Saarland)Diepholz (Lower Saxony)

Portugal

Ecuador

Canada

Australia

Cyprus

Africa

Pakistan

363.0

185.2

787.5

11,657.3

65.927.9

12.0

16.5

13.5

19.5

31.5

54.0

6.0

Sri Lanka 22.5

VENSYS Energy AG

Im Langental 666539 NeunkirchenGermanyT + 49 6821 9517-0F + 49 6821 9517-411vertrieb@vensys.dewww.vensys.de

Imprint: Published by VENSYS Energy AG, Im Langental 6, 66539 Neunkirchen, Germany · Concept & design: NORDNORDWEST Kommunikation & DesignTexts: Windmedia Björn Johnsen · Photos: NNW / Carlos Arias Enciso S.1, 2, 3, 4 l, 6 l, 8 (3), 10, 11 l, 14, 15, 17, 21, 22, 26 l b + r · Ulrich Mertens S.5 r, 24, 25 r

State as of: December 2012