資源描述：
《基于下垂控制的微網(wǎng)逆變器雙模式統(tǒng)一控制器分析》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、ResearchonDroopControlBasedUniformControllerforDual-modeInvertersinaMicrogridABSTRACTItisalreadytheconsensusoftheelectricpowerindustrydomesticandabroadthatmicrogridisoneofthekeytechnologiesofthefuturesmartgrid.Microgridcanoperateineithergrid-tiedmodeoroffgridmodeintentiona
2、llywhenthepowergridfails.Voltagesourcemicrogridinverteriscriticalequipmentformicrogridseamlessswitchingbetweengrid-tiedandoff-gridmodes.Wirelessdroopcontrolmethod(WDCM)isoneoftheeffectivewaysformicrogridinvertertorealizedualmodecontrolandseamlesstransfer.Butoutputpowercont
3、rolaccuracyofparallelinvertersadoptingWDCMisgreatlyinfluencebythelineimpedance.Itisdifficulttorealizeaccurateproportionalshareoftheloadpowerforparallelinvertersinoff-gridmode,anddifficulttorealizeaccuratetrackofpowercommandforinvertersingrid-tiedmode.Thesefeaturesmakethest
4、udyofthedualmodeinverterbasedondroopcontrolbecomeadifficulty.Inthispaper,forthedesigningproblemofmicrogridinverterdualmodecontrollersupportingmicrogridoperationinbothgrid-tiedandoff-grid,deepresearchondroopcontrolprincipleiscarriedoutandthemainfactorsimpactingoutputpowerpr
5、ecisecontrolofmicrogridinverterbasedondroopcontrolmethodareanalyzedundermulti-invertersoperatingconditionsofthemicrogridsystem.Thendual-modeunifieddroopcontrollerdesignmethodbasedonlocalsamplingisproposed.Themaincontentsofthespecificresearchandinnovativeworkareasfollows:（1
6、）AccordingtocomprehensiveanalysisandcompareofexistingWDCMmethod,itisfoundthatthedroopcontrollerbasedonthevoltageamplitudefeedbackhasobviousadvantagesoverothercontrolmethodswithgoodfeaturesofanti-disturbanceonthesystemparametersandaccurateactiveandreactivepowercontrol.Howev
7、er,thepremiseisthatsamplingpointofthevoltagerequiredbythecontrollermustbelocatedatthePCC.Whentheinverterisfarfromthecommonbus,thelongdistancesamplingsignallinewillnotonlyintroduceinterference,resultinginsignaldelay,butalsoisnotbenefittothemodulardesignofthemicrogridinverte
8、rs.（2）Fortheproblemsofthemethodsabove,improvedWDCMcontrolmethodbasedonthelocalsamplingisp
