Title of Paper:Implementation of an Active-Clamped Current-Fed Push-Pull Converter Employing Parallel-Inductor to Extend ZVS Range for Fuel Cell Application

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Affiliation of Author(s):自动化学院

Journal:IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS

Key Words:Active-clamped current-fed fuel cell application push-pull converter wide-range ZVS

Abstract:This paper proposes a wide-range zerovoltage- switching (ZVS) active-clamped current-fed push-pull converter for fuel cell application. The presented converter achieves ZVS for all of the primary switches and ZCS for secondary diodes from rated load to 10% full load over the wide input voltage variation, improving the overall efficiency. The ZVS of switches is realized by the energy stored in the transformer leakage inductance aided by the secondary parallel inductor. An additional active clamping circuit suppresses the voltage spike as well as assists in realizing ZVS of switches. Low-voltage-rated switches with low on-state resistance can be used. Moreover, the voltage-doubler rectifier is adopted to release the reverse-recovery problem of rectifier diodes and reduce turns ratio of the high-frequency transformer. Detailed steady-state operation, analysis, design, control, comparative study, and experimental results are discussed in depth in this paper. Finally, a 200-W prototype has been built in the laboratory to verify the effectiveness of the proposed converter.

ISSN No.:0278-0046

Translation or Not:no

Date of Publication:2017-10-01

Co-author:Wu, Qunfang,Xu, Jialin,Xiao Lan

Correspondence Author:Wu, Qunfang,wangqin