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Design and analysis of H-soft-switched converters

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4 Author(s)
Yu-Ming Chang ; Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan ; Jia-You Lee ; Wen-Inne Tsai ; York-Yih Sun

An H-soft-switched cell is proposed to obtain soft switching in single-switch nonisolated DC-to-DC converters. The proposed cell provides constant-frequency loss-less switching. It may be regarded as a soft switch with a similar control circuit to that used in conventional PWM converters. Based on an equal area concept, a unified method for steady-state analysis is also proposed. The concept of equivalent effective duty is introduced to simplify the design of the converters. Experimental results of an H-soft-switched boost converter are presented to verify the proposed topologies and the analytical methods

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:142 ,  Issue: 4 )