基于复合控制的交流电子负载研究

,,,,(,430074):,AC/DC/AC,,,,,1:;;;:TM461:ANovelCombinedControlforACElectronicLoadLIFen,ZOUXu2dong,ZHANGJie,WANGCheng2zhi,CHENWei(CollegeofElectricandElectronicEngineering,HuazhongUniversityofScienceandTechnology,Wuhan430074,Hubei,China)Abstract:AkindofACelectronicloadbasedonAC/DC/ACconverterfortestingofACpowersourcewithenergyrecyclingcapabilitywaspresented.TheactivepowerbalanceofthisACelectronicloadwasanalyzedindetail.Basedontheanalysis,anovelcombinedcontrolstrategywasputforward,whichcanmeettherequire2mentsoffastresponse,accuratetrackingabilityandcontrolstability.Thisproposedmethodcaneliminatethesteady2statecontrolerrorcausedbytested2powervoltagecompletely,achievegooddynamicandsteadyper2formanceofsimulatingthespecifiedimpedanceandrealizingnearunitypowerfactoroperation.Theresearchisprovedtobeeffectiveinpowerrecoverybysimulationandexperiments.Keywords:ACelectronicload;loadcharacteristics;powerrecovery;combinedcontrol:(2007ABA051):(1984-),,,Email:[e-mail]111Fig.1Blockdiagramofpowerrecoveryfortestingpower,,,,,,,,,,,[14]UPS[1]3AC/DC/DC/AC,DC/DC,,,[2]PWMUPSUPS,UPS,74ELECTRICDRIVE2008Vol.38No.1020083810,UPS[3,4]AC/DC/AC,[3],,;[4],,,LC,,[4],,,[3],[5],,,22PWM,AC/DC/AC,3:1;2;32PWMFig.2MaincircuitofACelectronicloadbasedondualsingle2phasePWMconverterP1,P1=u1i1(1)P2,P2=usis(2),,,,P1=P2(3)u1,us,(3),i1,i1,,isPWM,,P1=Pdc=udcidc1(4)P2=Pdc=udcidc2(5)(3)udc(idc1-idc2)=0(6)(6)[6],;32PWM,PWM,,2AC/DC/AC,,[3]3,i1,;is,,PWM,,3au3iPWM,ua1b1PWM,RL1,,8420083810,:PWMP,,,,4PWMPI,[79],P3Fig.3BlockdiagramofcontrolsystemforACelectronicload4Fig.4CombinedcontrolforthesimulatingloadpartPWM,PWM1,ua1b1=u3i(7)4(7),I31I1Gi(s)Gi(s)=KP/(R+sL1)1+KP/(R+sL1)=KPKP+R+sL1(8)L1mH,R,(8)KP10RKP+R10L1(9)(8)Gi(s)=KPKP+R+sLS1(10)(10),1,,4,Matlab/Simulink2UPS:55V,50Hz,L15mH,Ls5mH,0.3,2350F,12.8kHz,100V,i31,i1i5656,,5u1Fig.5Simulationwaveofinputcurrenti1withthepuresineu12,TIDSP32TMS320F2812DSP94,:200838106u1Fig.6Simulationwaveofinputcurrenti1withu1containingharmoniccomponents,12.8kHz7a7b7,,,7Fig.7ExperimentwavesofACelectronicloadinsimulatingresistiveload5PWM,,:1)AC/DC/ACLC,;2),,[1]AyresCA,BarbiI.AFamilyofConvertersforUPSPro2ductionBurn2inEnergyRecovery[J].IEEETrans.onPowerElectronics,1997,12(4):615-622.[2]HuangShyh2Jier,PaiFu2Sheng.DesignandOperationofBurn2inTestSystemforThree2phaseUninterruptiblePow2erSupplies[J].IEEETrans.onIndustrialElectronics,2002,49(1):256-263.[3]TsaiMing2Tsung,TsaiCharles.EnergyRecyclingforE2lectricalACPowerSourceBurn2inTest[J].IEEETrans.onIndustrialElectronics,2000,47(4):947-976.[4],,.[J].,2006,12(4):97-100.[5]OmkunS,SethakulP,ChunkagV.NovelControlTech2niqueofSingle2phasePWMRectifierbyCompensatingOutputRippleVoltage[C]IEEEInternationalConferenceonIndustrialTechnology(ICIT),2005,1(2):1033-1038.[6]OoiBT,DixonJW,AshokBK.AnIntegratedACDriveSystemUsingaControlled2currentPWMRectifier/InverterLink[J].IEEETrans.onPowerElectronics,1988,3(1):64-71.[7],.PWM[M].:.2003.[8]StihiO,OoiBT.ASingle2phaseControlledCurrentPWMRectifier[J].IEEETrans.onPowerElectronics,1988,3(4):453-459.[9]YukihikoS,TomotsuguI,KazuyoshiN,etal.ANewCon2trolStrategyforVoltage2typePWMRectifierstoRealizeZeroSteady2stateControlErrorinInputCurrent[J].IEEETrans.onIndustrialApplications,1998,34(3):480-485.:2007209220:20082052050520083810,: