宽输入高增益隔离型DC--DC变换器的研究汇总.pdfVIP

隔离型DC—DC变换器的输出倍压技术主要有整流倍压技术和谐振倍压技术。理论上， 任何变压器双向磁化的隔离型DC—DC变换器均可以采用输出倍压技术，对于变压器输出为 电流型的拓扑可以采用整流倍压技术，而对于变压器输出为电压型的拓扑则需要采用谐振 倍压技术。本文设计了一台实验样机以验证谐振倍压技术在变压器输出为电压型的应用的 可行性。 最后，本文就各部分的研究内容和成果做了总结，并提出了进一步改进与研究的方向。 关键词：宽输入，高增益，隔离升压，DC—Dc变换器，LLC谐振变换器，输出倍压 Abstract kind isolated DC—DCconverterisa ofconverterwhichcanconvertlow The step—up DCbusandrealizeelectrical DCbusinto isolation．Thecommon voltage hi曲voltage areforward Boostconverterandtheirvariations． converter,isolated topologies converter,flyback The DC·-DCconverterhasbeen usedinfieldssuchas isolated step··up widely energystorage andaeronautical system．And tothe of system powersupply accordingdevelopingtendency isolated DC—DCconverterwillbecomeoneofthe electronics，the power step—up keytechnology infieldslikenew andnew vehicle．In characteristicsof energy conclusion,the generationenergy thenew isolated DC—DCconverteriswide and generationstep-up input，hi曲step—upgain high efficiency． LLCresonantconvertercallachieve side ZerO-voltageswitching(zvs)forprimary switchesandZerO—current for siderectifierswithout it switchingsecondary auxiliarycircuit，SO and DC—DC features structure itis usedinfront—end simple hi曲efficiency．Andwidely converterinrecent