电压不匹配运行条件下双有源桥变换器的效率优化方法

doi:10.19595/j.cnki.1000-6753.tces.212065

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Abstract

The converter can improve the whole machine under the operating condition of input and output voltage mismatch efficiency by controlling the zero voltage switching (ZVS) of all the switching tubes of the dual active bridge (DAB) converter and optimizing the current stress of the converter. First, this paper analyzes the inductor current constraint conditions of the DAB converter to achieve ZVS, and obtains the transmission power range. The influence of the soft switching constraints on the transmission power under the boost and buck conditions is compared, and the maximum soft switching power range is taken as an indicator. The DAB phase-shifting control mode is optimized. Then based on the preferred phase-shifting control mode, the ZVS-CSO optimization algorithm is proposed to obtain the corresponding shift phase value when the current stress in the ZVS region is the smallest, further reducing the current stress of the switch tube. Finally, the effectiveness of the proposed optimization algorithm is verified on the StarSim hardware-in-the-loop platform and the physical platform.

Key words： Dual active bridge wide voltage range zero voltage switching switching loss current stress conduction loss

Received: 21 December 2021

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TM46

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	Articles by authors
	Yang Xiangzhen
	Wang Jinxiu
	Kong Linghao
	Du Yan
	Zhang Tao

Cite this article:

Yang Xiangzhen,Wang Jinxiu,Kong Linghao等. Efficiency Optimization Method of DAB Converters Under Wide-Voltage Operating Conditions[J]. Transactions of China Electrotechnical Society, 2022, 37(24): 6239-6251.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.212065 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I24/6239

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