資源描述：
《單相SPWM逆變器并聯(lián)解耦控制策略.doc》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、英文資料原文來源:出自JOURNALOFELECTRONICSCIENCEANDTECHNOLOGYOFCHINA,VOL.7,NO.3,SEPTEMBER2009DecouplingControlStrategyforSinglePhaseSPWMParallelInvertersShun-GangXu,Jian-PingXu,andTai-QiangCaoAbstract:Adecouplingcontrolstrategyofinverterparallelsystemisproposedbasedontheequivalentoutputimpedance
2、ofsinglephasevoltagesourceSPWM(sinusoidalpulsewidthmodulation)inverter.Theactivepowerandreactivepowerarecalculatedintermsofoutputvoltageandcurrentoftheinverter,andsenttotheotherinvertersintheparallelsystemviacontrollerareanetwork(CAN)bus.Bycalculatinganddecouplingthecircumfluenceofthe
3、activepowerandreactivepower,theinverterscanshareloadcurrentviatheregulationofthereference-signalphaseandamplitude.Experimentalresultsofan110V/2kVAinverterparallelsystemshowthefeasibilityofthedecouplingcontrolstrategy.IndexTerms-CANbus,currentsharing,inverters,paralleloperation.1.Intro
4、ductionParalleloperationofinvertersisanefficientwaytoenhancethecapacityandreliabilityofinvertersystems.Thekeyissueofparalleloperationisthedistributionoftheloadcurrent.Inaninverterparallelsystem,theamplitudesandphasesofoutputvoltagesofallinvertersshouldstrictlyequaltoeachothertoguarant
5、eethateachinvertersharesthesameloadcurrent.Otherwise,thecurrentcircumfluenceandoverloadofsomeinvertersintheinverterparallelsystemmayexist.Thecurrentcircumfluencemayalsodecreasetheefficiencyandreliabilityoftheinverterparallelsystem.Therearevarioustechniquesforthecontrolofinverterparall
6、eloperation.Amongthesetechniques,centralcontrolandmaster-slavecontrolareeasytoimplementandhavegoodcurrent-sharingperformance.However,thesetwocontrolstrategiesworkatthecostofsystemreliabilitybecauseofconjunctionoperationamonginverters.Ininstantaneous-currentcontrolofinverterparallelsys
7、tem,thereisacurrentbustosharethecurrentsignalamonginvertersandtheinstantaneouscircumfluenceisusedtoregulatetheoutputcurrent,eachinverterhasgoodtransientperformanceandtheparallelsystemhasgoodcurrentsharingperformance.However,itsanalogsignalcommunicationiseasytobedisturbedandthesignalis
8、olati
