隔离式双向全桥DC-DC变换器的功率控制特性比较与分析

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Abstract For the different characteristics of non-resonant and resonant isolated bidirectional full bridge DC-DC converter, a unified expression of power transmissions is derived from the two DC-DC converters. The power transfer characteristics could be unified described through the power expression. The problem of isolated bidirectional DC-DC converter is that the switching loss increases and the converter efficiency declines with the forced turn-on or turn-off of switch devices in high frequency situation. In this paper, to solve this problem, an isolated LC series resonant transformer full bridge DC-DC converter is taken as research object, a phase-shift control strategy which could realize zero voltage turn-on and decrease the turn-off current of the power devices to decrease switching loss and increase the efficiency is proposed. The validity of proposed control strategy is verified through simulation and experiment results.

Key words： Bidirectional full bridge DC-DC converter series resonant soft-switching technology first harmonic analysis voltage gain

Received: 08 January 2013 Published: 25 March 2014

PACS:

TM464

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	Wu Lin
	Liu Zhigang
	Hong Xiang

Cite this article:

Wu Lin,Liu Zhigang,Hong Xiang. Comparison and Analysis of Power Control Characteristic for Isolated Bidirectional Full-Bridge DC-DC Converter[J]. Transactions of China Electrotechnical Society, 2013, 28(10): 179-187.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I10/179

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