| Summary: | 碩士 === 國立成功大學 === 電機工程學系碩博士班 === 97 === In this thesis, a zero-current-switching two-switch forward converter is presented. The variable-inductor in the resonant bank is used to reduce the switching losses and the peak value of output-diode current. Namely, the system-efficiency can be improved. Moreover, the operating principle and the design criteria are discussed in detailed. Finally, a prototype two-stage circuit is implemented to verify the performance. The front-stage is a boost converter with power-factor-correction(PFC) function and the second-stage is the proposed circuit with input voltage 90-264 V, output voltage 48 V, and output power 384 W.
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