dr zeljko despotovic_viii forum ns 2014

8/18/2019 Dr Zeljko Despotovic_VIII Forum NS 2014

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www.pupin.rs

MOBILE ROBOTIC SOLAR GENERATOR

MobiSun Pro Energy ™ -

APPLICATION IN NEW ENERGY TECHNOLOGIES

VIII International Forum for Clean Energy Technologies2014 ENERGY CHARTER = SUSTAINABLE DEVELOPMENTOF SERBIA

Novi Sad, 30th September – 1st October 2014

Project team:Aleksandar Rodic, PhD.Mech.EngZeljko Despotovic, PhD.Elec.EngpresenterMilos Jovanovic, PhD.Elec.Eng

Svemir Popic, MSc.Mech.EngIlija Stevanovic MSc.Mech.eng


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Introduction

Mobile robotic solar generator MobiSun Pro Energy™ , developed in the Mihailo Pupin Institute,is a modern automated device for electrical powerproduction based on the use of renewable energyof sun.

It is intended for individual users, small andmedium customers of electrical power, likealternative resource for off-grid supplying.

It has universal purpose and can be used in, , , , .

MobiSun Pro Energy™ is designed to beautonomous device without connecting to theelectrical network (off-grid) and any kind ofconstruction and energy infrastructure is notrequired.

Suitable for use on variety of terrains (rural orurban) where natural conditions for the exploitationof solar energy exist and there are no conditionsfor use of electric power infrastructure.

It is designed to be steadfast for various weather

conditions – rain, sun and wind (up to 80km/h).


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Mobile solar generator MobiSun Pro Energy™ - disposition

(1)

(2)

(3)

(3)

(5)

(5) (5)(2)

MobiSun Pro Energy™ consists of five basic modules (technical

subsystems):

• Transport module with lateral stabilizers (1)

• Mechanical structure and two-axis robotic mechanism for solar

tracking (2)• Three photovoltaic panels of 3 x 300 W power (3)

• Power conversion subsystem: MPPT solar charger DC/DC (4),battery bank storage (5), inverter DC/AC (6)

• Control and communication block: microcontroller of two-axisrobotic solar tracking system (7) and GSM module (8) for remote

control and data transmission from the device to the user

(5)

(6)

(4)

(5)

(5)

(7)

(8)


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Mobile solar generator MobiSun Pro Energy™ - principal block scheme


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FIRST OPTIMISATION in MobiSun Pro Energy™ generator :MAXIMUM POWER POINT TRACKING


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SECOND OPTIMISATION in MobiSun Pro Energy™ generator :DUAL AXIS DRIVE and TRACKING OF SUN TRAJECTORY

••ChronologicalChronological trackingtracking based on naturalobservation of the position of the sun in a given

area and a given time period during the year.• This means that for certain geographiccoordinates and a certain period of time theprogram (software) can determine the positionof the sun during daylight

•In accordance with the program can becontrolled by the position of the solar panelsthroughout the day, during the period of use ofthe solar•This method of positioning is independent ofcloud cover because the is known position of

the sun at any time.•The only thing that need to take into accountthe orientation of the local coordinate system ofsolar panels in relation to the global coordinatesystem (Earth).


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SUN TRAJECTORY (from sunrise to sunset) Belgrade, 22. December 2013.


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SUN TRAJECTORY (from sunrise to sunset), Belgrade 21. September 2013.


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SUN TRAJECTORY (from sunrise to sunset), Belgrade 21. Mart 2013.


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For each geographical

location and for everyperiod can beprogrammed position ofthe solar panel (optimizeits position).

SUN TRAJECTORY (from sunrise to sunset), Belgrade 22. May 2013.

The analysis of thediagram can be seenthat during daylight from05:00 to 20:15 Sunmoves in azimuthbetween 55º and 297º

while the elevation anglethat is between -2º tomax 65º


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• Assuming that the axisdrives turning-on

incorporate every 15minutes to be at thebeginning and at the end ofthe day (sunset / sunrise)

Range of azimuth and elevation angles-dual axis tracking

around 2º-3º, a mid-day

5º - 8º azimuth, while theelevation of β changemilder than 1º - 2º.

• To accomplish this, wechose a system with twoindependent degrees offreedom i.e. two actuators.


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TRACKING of SUN TRAJECTORY-Benefits?

MobiSun Pro Energy™

output power of PV panels


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Battery bank storage


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Configurations of MobiSun Pro Energy™ generator- with solar tracking

AC single phase

output; max 2.4kWautonomy -YES

AC three hase

10.000,00 Eu

PRICE

output

DC outputNo needDC/ACinverter

*** In the prices not included motor and pump

8.500,00 Eu

max 2.4kWautonomy -YES

PRICE


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Configurations of MobiSun Pro Energy™ generator- with solar tracking

without battery bank

AC single phaseoutput

max 1kWno autonomy

AC three phase

8.000,00 Eu

PRICE


max 1kWno autonomy

max 1kWno autonomy

6500,00 Eu

PRICE



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Configurations of MobiSun Pro Energy™ generator-fixed PV panels

AC single phaseoutput; max 2.4kW

autonomy-YES

AC three phase

without two-axis

controller

savings on money

≈2000 Eu

8.000,00 EuPRICE

output


savings on money≈1500 Eu+2000Eu=3500Eu


6.500,00 Eu

PRICE

max 2.4kWautonomy-YES


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Configurations of MobiSun Pro Energy™ generator- fixed PV panels

AC single phaseoutput

without battery banksavings on money ≈2000 Eu

max 1kW

no autonomy

6.000,00 Eu

PRICE

output


savings on money

≈2000Eu+1500 Eu=3500Eusolar tracker 2000Eu

TOTAL savingson money≈5500 Eu!!!

*** In the prices not included motor and pump 4.500,00 Eu

max 1kW no autonomy

PRICE


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MECHANICAL STRUCTURE of MobiSun Pro Energy™

Construction withtwo linear actuators•SMART actuator

LINEAR DRIVE

-servo driver of linearmotor

-position sensor


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Construction with rotational drives

Construction withtwo rotationalactuators :

Slewing drive withtwo smart actuators

•SMART actuatorinclude:

-servo driver /motor-position sensor(inclinometer)


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CHECKING THE MECHANICAL STRUCTURE AT THE STRESS ANDSTRAINS

Checking the mesh structure

Checking the supporting frame


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ANALISYS OF THE INFLUENCE OF WIND SPEED TO MECHANICALSTRUCTURE

CHECKING THE MECHANICALSTRUCTURE AT WIND SPEEDup to 80km/h

CHECKING TORQUE

CHECKING FORCE


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TECHNICAL PERFORMANCE

PV input• PV panels (1600x1000mm) 3 pcs

• Peak power 3x300W=900W,• Peak power voltage: 32VDC• Peak power current: 3x9.5A=28.5A •

algorithm)

BATTERY CHARGER • Input voltage 10-36VDC• Nominal current In=40A

• Implemented algorithm MPPT• Monitoring of state of the charge (SOC) and displaying of all

operative statuses (nominal regime and alarm state)• CAN bus communications port


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TECHNICAL PERFORMANCE

BATTERY• Gel, special designed for solar application

• 3000-5000 cycles of charging/discharging• 5x(2x12V/100Ah)• Total capacity 500AhINVERTER

• Input voltage: 24VDC (nominal), range:18-40VDC• Output voltage: 230V,(50Hz±0.1%), range: 180-240VAC• Output current: In=13A• Peak power: 6kW (short time)• Efficiency: 95%

• Total harmonic distortion (THD)


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MobiSun Pro Energy™ - application possibilities

• Mobile solar generators are universal devicesand can be used on any terrain where thereis a need for electric power (12V / 24V DC

voltage and an AC-220 V) and whereconditions for the use of solar energy exist.

• They are ideal for use in agriculture as aportable, easy to use, reliable and robust in

,

other than regular cleaning of panels fromdust, the long service life (over 20 years),produce no noise and do not pollute thenature.

• They are recommended for use in both crop

farming and fruit growing, as well as inanimal husbandry, beekeeping, fishing, etc…

• Mobile solar generator as a solution forenergy supply, practically has no alternativein organic food production as it meets thestrict environmental standards of production.


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Crops irrigation: MobiSun pro Energy is universal devicewhich can be used for differentpurposes in agriculture .

•However, one of the mosteffective applications is in crops

MobiSun Pro Energy™ in crops irrigation

irrigation (on fields, orchards,

etc.).

•Combined with electricallypowered water pump, mobilesolar generator can be used forirrigation of small to middle

fields with area of several ares(greenhouses, hothouses,gardens) to several hectares(fields, orchards)


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Projected capacity of the single-phase (power 2.2 KW) and three-phase (power 5.5 kW)solar generator at irrigation depending on the depth of pumping water from a source (flowrate in liters per hour and irrigated land surface)


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PERFORMANCES of single phases centrifugal pump drive

• Depth of the pumping H=20m

-achieved flow 160 l/min

-autonomy of pumping 2h

Application example

Centrifugal pump: CPm190-Pedrollo, 230V, 50Hz, 2900 min-1, nominalpower 1.5kW

-battery depth of discharge 30% (180Ah)

• Depth of the pumping H=50m

-achieved flow 60 l/min

-autonomy of pumping 1.5h

-battery depth of discharge 40% (250Ah)


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System of drip irrigation- AC

power

System of drip irrigation- AC power


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System of drip irrigation- DC power


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Systems of crops irrigation

irrigation

DC or AC power


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Systems of drip irrigation


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Solar system for livestock watering

•Inaccessible ruralareas

•Lack of water•It is necessary waterstorage•Water for drinkin is•especially necessarybefore the evening•During the day poolsare filled withpumping system

and empty towardsevening•No need batterystorage•MPPT is desirable


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Solar system for fishponds watering

??

CO2emission!!!

dBNoise and

vibrations!!!


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Solar power of field hospitals (civil or military)

AC and DCAC and DC

AC and DC AC and DC


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Solar power of rural areas (small villages)-battery is required

•AC-poweror

DC-power(lessexpensive)

•Solartracking


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Rural tourism, ethno-catering objects

CO2 emission!!Noise and vibrations!!


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Mobile robotic solar electric generator MobiSun Pro Energy™ - in a transport regime


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Mobile robotic solar electric generator MobiSun Pro Energy™ -ready for installation


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Mobile robotic solar electric generator MobiSun Pro Energy™ -closed state on a trailer


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Mobile robotic solar electric generator MobiSun Pro Energy™ -in a operating state on a trailer


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Mobile robotic solar electric generator MobiSun Pro Energy™ -ready for release of the trailer


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Mobile robotic solar electric generator MobiSun Pro Energy™ -possibilities for other needs and requirements


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Mobile robotic solar electric generator MobiSun Pro Energy™ -operating state with stabilizers on the “ground”


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Mobile robotics solar generator/

Mobilni solarni robotizovanigenerator

IERWE – International Exiition for ReneWable Energy 12-14.03.2014, BelgradeTrade Fair & Business forum

PREVIOUS PROMOTIONS

PREVIOUS PROMOTIONS


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MobiSun Pro Energy – Mobile Robotic Solar Electric Generator57th International Belgrade Fair of Technics and Technology

PREVIOUS PROMOTIONS

Green energy

PREVIOUS PROMOTIONS


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81st International Agricultural Fair 20-26.05.2014, Novi Sad

PREVIOUS PROMOTIONS

CONCLUSIONS


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ADVANTAGE of Mobile robotic solar electric generatorMobiSun Pro Energy™

• Energy efficient – The device is optimized to acquire maximal solar energy based on solartracking system, maximal power point tracking (MPPT) controller and battery storage capacitydesigned to support frequent daily use.

• Clean - No exhaust. No carbon emissions. No oil changes.• Quiet - Around the jobsite, where communication is a matter of safety, the silent power generation

of a solar mobile generator is even more valuable.• Reliable - Our trailer-based solar generator doesn’t rely solely on the Sun. This system can be

charged by grid power or with a traditional diesel generator on those days that the sun doesn’tshine. And with only a handful of moving parts, few things will ever have to be replaced during the

’

CONCLUSIONS

ra er so ar genera or un s e.• Aavailable - Even though the original cost for a solar generator is higher than some petroleum

generators, it will save you money in the long run. These units will last longer, require lessmaintenance, and don’t rely on increasingly expensive fuel.

• Durable - With panels designed to withstand hail one-inch in diameter at 90 mph, industrial-gradeforklift batteries and inverters built to stand-up to rugged conditions, these solar mobile generatorswill go the distance and perform for decades.

• Safe - These solar generator units pose no threat to the devices you run off of them. You shouldnever worry about that expensive laptop or power tool.

• Mobile – Our device is mobile and portable. You are able to move it and replace easily anywhereby use of a standard auto-trailer. You are enabled even to release the trailer (transporter of device)if need and the generator will still operate being it relies onto four supporting stabilizers that keep itstanding and working properly. The time required to bring system from the transport mode to theoperation mode is only 15 min. One person can do it oneself.

• Remotely controlled – This solar generator unit can be switched on and off remotely as well aschecked for battery capacity, operation time, power released,maximal power, etc.


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ACKNOWLEDGEMENTS

• This project is financially supported formSerbian Ministry of Education and Science –Innovation Project: ”Development of remotecontrolled robotic solar electro generator for

”,

year 2014/2015

• Also, this project is logistic supported from

Chamber of Commerce and Industry of Serbia


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THANK YOU IN ATTENTION!!!

Belgrade, September 2014Author of presentation:Zeljko V. Despotovic, PhD.E.E

dr zeljko despotovic_viii forum ns 2014

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