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ON POWER ON POWER- -SHARINGSHARINGOFOF

SOLAR SOLAR- -BASED HYBRIDEBASED HYBRIDEMOTOR DRIVEMOTOR DRIVE

SYSTEMSSYSTEMS

Presented by,Presented by,MAGESH KUMAR. A (1HK07EE401)MAGESH KUMAR. A (1HK07EE401)

8/7/2019 magesh ppt


OUTLINE OF THE PRESENTATIONOUTLINE OF THE PRESENTATION

ABSTRACTABSTRACT

INTRODUCTIONINTRODUCTION

DESCRIPTIONDESCRIPTION

BENEFITSBENEFITS

LIMITATIONSLIMITATIONS

APPLICATIONSAPPLICATIONS

CONCLUSIONCONCLUSION

8/7/2019 magesh ppt


ABSTRACTABSTRACT

InIn thisthis paper,paper, thethe conceptconcept of of aa solarsolar- -basedbased hybridhybrid adjustableadjustable speedspeed PumpPump isisdescribeddescribed. . WhichWhich hashas beenbeen developeddeveloped inin thethe laboratorylaboratory to to investigateinvestigate thethepowerpower- -sharingsharing inin hybridhybrid (dual(dual--input)input) MotorMotor- -drivedrive systemssystems. .

TheThe testtest setupsetup containscontains a a DCDC--DCDC ModuleModule connectedconnected toto thethe DCDC--busbuscapacitorscapacitors of of aa 22..55hphp 230230VV PWMPWM- -basedbased adjustableadjustable- -speedspeed motormotor- -drivedrive. .

TheThe experimentalexperimental resultsresults demonstratedemonstrate thatthat thethe powerpower- -sharingsharing of of aaPhotovoltaicPhotovoltaic (PV)(PV) array/DCarray/DC- -DCDC converterconverter is is notnot aa functionfunction of of motormotor speedspeed ininHybridHybrid solarsolar--basedbased motormotor- -drives,drives, asas longlong asas thethe powerpower contributioncontribution of of thetheACAC--gridgrid staystay aboveabove zerozero..

InIn thesethese conditions,conditions, thethe PVPV--DCDC--DCDC modulemodule behavesbehaves likelike aa currentcurrent Source,Source,andand thethe dynamicdynamic behaviorbehavior of of thethe motormotor. .

8/7/2019 magesh ppt


INTRODUCTIONINTRODUCTIONAsAs thethe priceprice of of thethe OilOil continuescontinues toto bebe unpredictable,unpredictable, andand asas thethe costcost of of

energyenergy continuescontinues toto increase,increase, peoplepeople lookinglooking forfor efficiency,efficiency, reducereduce theirtheircostcost of of livingliving..

TheThe i i--vv characteristiccharacteristic of of solarsolar modulesmodules makesmakes themthem suitablesuitable voltagevoltage andandcurrentcurrent sourcessources. .

OneOne of of thethe primaryprimary reasonsreasons isis thatthat if if therethere isis aa rapidrapid powerpower reductionreduction dueduetoto aa changechange inin insolationinsolation, , thenthen therethere isis aa possibilitypossibility forfor voltagevoltage collapsecollapse atatthethe inputinput terminalsterminals. .

OnceOnce thethe voltagevoltage collapsescollapses thethe DCDC--busbus voltagevoltage of of thethe drivedrive willwill collapsecollapseresultingresulting inin motormotor shutdownshutdown. .

ThisThis lack lack of of reliabilityreliability cancan bebe overcomeovercome byby usingusing eithereither anan energyenergy storagestoragedevicedevice oror AcAc gridgrid asas aa supplementarysupplementary sourcesource. .

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Continued«Continued«In hybrid motor In hybrid motor- -drive systems, the contribution made by the ACdrive systems, the contribution made by the AC- -grid serves togrid serves tostabilize the DCstabilize the DC- -bus voltage of the variable speed drive.bus voltage of the variable speed drive.

Fluctuations in incident solar radiation make solar power unpredictable.Fluctuations in incident solar radiation make solar power unpredictable.

so by utilizing power grid to stabilize the DCso by utilizing power grid to stabilize the DC- -bus voltage, solar bus voltage, solar- -based hybridbased hybridsystems can use solar energy as it becomes available.systems can use solar energy as it becomes available.

Through proper switching of the DCThrough proper switching of the DC- -DC module, power can be injected into theDC module, power can be injected into the

pump from the solar array instead of the grid. This allows the AC power to operate aspump from the solar array instead of the grid. This allows the AC power to operate asa supplementary source .a supplementary source .

The pump can run solely on the available solar power unless there are very rapidThe pump can run solely on the available solar power unless there are very rapidchanges in the load (i.e. stating transient), or in the incident solar radiation when thechanges in the load (i.e. stating transient), or in the incident solar radiation when thepump will draw power from the grid to compensate.pump will draw power from the grid to compensate.

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BLOCK DIAGRAMBLOCK DIAGRAM

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PRESENCE OF LINE LOESSPRESENCE OF LINE LOESS

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DCDC--BUS HIGH FREQNCYBUS HIGH FREQNCY

VOLTAGE SPIKESVOLTAGE SPIKES

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Current and voltage waveforms of theCurrent and voltage waveforms of the

DC inductor in the DCDC inductor in the DC- -DC module.DC module.

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PV Characteristic And Eq. (4) Intersection IndicatesPV Characteristic And Eq. (4) Intersection IndicatesThe Operating Point Of The Hybrid MotorThe Operating Point Of The Hybrid Motor- -drivedrive

System.System.

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HYBRIDE DRIVE STUDY STATEHYBRIDE DRIVE STUDY STATE

CONDITIONCONDITION

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The SolarThe Solar- -based Hybrid Variable Speedbased Hybrid Variable Speed

Pump Test SetupPump Test Setup

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ADVANTEGESADVANTEGES

S olar energy is safe ,free of cost andS olar energy is safe ,free of cost andreduce the cost living.reduce the cost living.Draw power from the grid to compensate.Draw power from the grid to compensate.Increasing the efficiency of energyIncreasing the efficiency of energyusages in agriculture.usages in agriculture.

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DisadvantagesDisadvantages

Initial capital investment is moreInitial capital investment is moreVoltage collapse will accurse due to the bad climateVoltage collapse will accurse due to the bad climate

Parasitic inductance produce voltage spikesParasitic inductance produce voltage spikes

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ApplicationApplication

Pool pump energy consumptionPool pump energy consumptionAgriculture water pump motor Agriculture water pump motor induction motor areinduction motor are used inused in a small scalea small scaleindustriesindustries applicationapplication

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CONCLUSIONCONCLUSIONIn this paper an application for power In this paper an application for power- -sharing between a solar sharing between a solar array and the ACarray and the AC- -grid has been demonstrated through thegrid has been demonstrated through theconstruction of a hybrid solar construction of a hybrid solar- -based adjustablebased adjustable- -speed pump wherespeed pump wherea DCa DC--DC module was designed, constructed and connected to theDC module was designed, constructed and connected to theDC link capacitors of a 2.5 HP variable speed motor DC link capacitors of a 2.5 HP variable speed motor- -drive.drive.

ItIt can be seen that the concept of power sharing between a PVcan be seen that the concept of power sharing between a PVsource, and a variable speed motor drive is not a function of motor source, and a variable speed motor drive is not a function of motor speed.speed.

as long as there is a minimum contribution from the grid.as long as there is a minimum contribution from the grid.Additionally it can be seen that the dynamic behavior of the motor Additionally it can be seen that the dynamic behavior of the motor is decoupled from the grid as long as there is as the PVis decoupled from the grid as long as there is as the PV- -DCDC--DCDC

module can sufficiently cover the load.module can sufficiently cover the load.

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co ntinuesco ntinues

This is a simple, but effective method of reducing theThis is a simple, but effective method of reducing theamount of energy used from the AC grid.amount of energy used from the AC grid.

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REFERENCESREFERENCES[1]. J. Arai, K.[1]. J. Arai, K. IbaIba, T. Funabashi, Y. Nakanishi, K., T. Funabashi, Y. Nakanishi, K. KoyanagiKoyanagi, .Yokoyama,, .Yokoyama,³Power electronics and its applications to renewable energy in Japan,´³Power electronics and its applications to renewable energy in Japan,ÍEEE Circuits and Systems Magazine, vol. 8, pp: 52 IEEE Circuits and Systems Magazine, vol. 8, pp: 52± ±66, Third Quarter 66, Third Quarter 2008.2008.

[2].[2]. QuanQuan Li, P. Wolfs, ³A review of the single phase photovoltaic moduleLi, P. Wolfs, ³A review of the single phase photovoltaic moduleintegrated converter topologies with three different DCintegrated converter topologies with three different DC- -busbusconfigurations,ćonfigurations,´ IEEE Transactions on Power Electronics, vol. 23, pp:IEEE Transactions on Power Electronics, vol. 23, pp:13 2013 20±±1333 , May 2008.1333 , May 2008.

[3] [3] LijunLijun GaoGao; R.A.; R.A. DougalDougal, , S hengyiS hengyi Liu; A. P.Liu; A. P. IotovaIotova, ³Parallel connected, ³Parallel connectedsolar PV system to address partial and rapidly fluctuating shadowsolar PV system to address partial and rapidly fluctuating shadowconditions,ćonditions,´ IEEE Transactions on Industrial Electronics, vol.IEEE Transactions on Industrial Electronics, vol. 56, pp:56, pp:15481548±±1556, May 2009.1556, May 2009.

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