DCM模式下交错并联磁集成双向DC/DC变换器的稳态性能分析

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Abstract Aiming at perfecting present analysis of the interleaving and magnetically integrated bidirectional DC/DC converter working in DCM mode, a 2-phase interleaving magnetically integrated Buck/Boost bidirectional DC/DC converter is studied as an example.With light load, the MOS tube is turned off in order to utilize the MOS tube body diode with one-way conductive property to avoid negative inductor current, thereby reduce the energy loss in the transformer and improve the efficiency of the converter.Firstly, intensive steady state study for the operation in the condition of Buck’s bidirectional DC/DC converter of DCM mode has been carried out.Secondly, the working conditions of the converter’s conversion conditions and the critical load current of the mode conversion are analyzed.By introducing the relationship between the variable ratio and other parameters, specific analysis of the changing rule of the phase current of each phase is performed when the converter under various working conditions (CCM/DCM).The change rule of the converter’s total output current is then found.Finally, through simulation and experiment with detailed data, the correctness of the theoretical analysis is verified.

Key words： The bidirectional DC/DC converter staggered parallel magnetic integration the coupling inductance the steady state performance DCM mode

Received: 24 November 2014 Published: 29 June 2015

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TM46

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	Yang Yu-gang
	Zou Yu-fei
	Dai Shao-jie
	Ma Jie

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Yang Yu-gang,Zou Yu-fei,Dai Shao-jie等. Steady State Performance Analysis of the Interleaving and Magnetically Integrated Bidirectional DC/DC Converter Under DCM Mode[J]. Transactions of China Electrotechnical Society, 2015, 30(11): 60-70.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I11/60

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