高壓變頻電機(jī)控制電路.pdf

1、北京交通大學(xué)碩士學(xué)位論文高壓變頻電機(jī)控制電路姓名：黃錚申請學(xué)位級別：碩士專業(yè)：電機(jī)與電器指導(dǎo)教師：張奕黃20080601ABSTRACTABSTRACT：TheAC，motorespeciallythesquirrelcageAC—motorforitssimplys缸u(yù)c嘶soliditylowcostandothercharacteristics，iswildlyusedinindustryAftermorethanacentury

2、ofdevelopment，themethodofAC—motorspeedcontrol1Smorematllring，andthebestmethodisVariable—frequencyRegulatingSpeedTechnologyAsthedevelopmentofmodemindustrythewayofmotorishigh‘voltageandlargecapacitybutinthefiledofhighvolta

3、geACmotorspeedcontrol，mostofitstilladoptconstantspeedUntiltheendof20centurytheneedofsavingenergyisreleasebythebirthofllighpewel“dec仃omcconvertersTheMultilevelpowerconverterhastheabilitytomal(elowervoltagesemiconductorsbe

4、stablyusedtomedium。voltageand1題gecapacityapplicationswhilereducingthehighorderharmonicsproducedwithPWMcontrolefficientlyNowduetoexpandingtomediumvoltagefieldeasilycascadedmultilevelpowerconvertershavebeenutilizedinmedium

5、。voltagemotordrivesandreactivepowercompensationsofpowersystemThisentiresubjectistoresearchCascadedMutilevelHighvoltageConverterapplyinginthefiledofACmotorsspeedcontrolbasedon10kV250kWhigh—voltageconverterAtmesametimeofan

6、alysinginitsprincipleandstructure，themaincircuitha】mlonicisimproved。TheHigh—voltageconverterisdifficulttomakeintouniversalconverterandVirablefrequencyACmotorsisneededThroughtheresearchofthisnewmotor’wecanusedVVVFtechnolo

7、gymoreeffectivelyInaddition，emulationalsoflwareMATLAB7O／Simulink60isusedforphase—shift，multilevelandothersAccordingtothesubject，thisresearchprovidesinstructionforhighvoltageconverterstructureoptimizationandcompatibledevi