[新型的ZVS-ZCSBSP软开关变换器的研究]

【新型的ZVS-ZCSBSP软开关变换器的研究】.pdf

RESEARCHOFANOVELZVS-ZCS BSPSOFT-SWITCHINGCONVERTER Chen Ke Supervised by Professor Chen Qixiu A thesis submittedforthedegreeof Doctor of Philosophy Department ofInformation andElectronicEngineering Zhejiang University,JuneCopyrightChen Ke,line/loadranges,mostresonantconvertershavetobeoperatedwithawiderangeof switching frequency.This makes the circuit optimizationvery difficult.In thispaper,a new ZVS-ZCS Bi-Frequency Synchronization PWM(ZVS-ZCS BSP) controlled ofboththeconventionalPWMandresonantconverterswhile avoidingtheirrespectiverespectively.And the circuit simulation results are shown at the end of the chapter.Finally,inchapter6,anexperimentalequipment ispresentedtoverifyvalidityofthe newconverter topology.Experimentalresults andsimulationresults arebothlistedto be compared with.Fig.