Design and Implementation of a ZCS Two-Switch Forward Converter with Variable-inductor

• Main Authors: Po-tso Chen, 陳柏佐
• Other Authors: Tsorng-Juu Liang
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/12048740870737678228

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.