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An improved single-stage power factor correction converter based on current-fed full-bridge topology

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2 Author(s)
Bin Su ; Electr. Eng., Zhejiang Univ, Hangzhou ; Zhengyu Lu

A novel soft-switching single-stage power factor correction (PFC) converter based on current-fed full-bridge topology is presented in this paper. First, the operation principle and characteristic are analyzed in details in this paper. Zero-voltage-transition which reduces stress of main switches is achieved; furthermore, both the voltage spike and loss induced by stubborn leakage inductor of isolation transformer are significantly reduced. In addition, ZVS or ZCS is achieved on all semiconductor devices of the proposed topology. Therefore performance of the current- fed full-bridge PFC converter is improved and high conversion efficiency is obtained. Finally, the above analysis and conclusion are verified by the experimental results through a prototype of 1 kW converter based on the proposed topology.

Published in:

Power Electronics Specialists Conference, 2008. PESC 2008. IEEE

Date of Conference:

15-19 June 2008

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