基于优化移相的双有源串联谐振变换器前馈控制策略

doi:10.19595/j.cnki.1000-6753.tces.211774

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Abstract The dual-active-bridge series resonant converter (DBSRC) in traditional single-phase- shift modulation under no-unit voltage gain has high backflow power, resulting in high RMS of the resonant current. For this problem, the DBSRC’s characteristics of the transmission power and the resonant current in multi-phase-shift modulation are analyzed. The multi-phase-shift modulation strategy is derived based on the optimization of the resonant current using the Lagrangian function. It is indicated that the optimized-phase-shift modulation can reduce the magnitude of the resonant current in light and medium loads. Based on optimized-phase-shift modulation method, a voltage closed-loop control strategy with output power feedforward is delivered. Finally, simulation and experimental results verify the feasibility and effectiveness of the optimized modulation and the feedforward control strategy.

Key words： Dual-active-bridge series resonant converter (DBSRC) no-unit voltage gain multi- phase-shift modulation magnitude optimization power feedforward control

Received: 05 November 2021

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TM46

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	Articles by authors
	Fan Enze
	Li Yaohua
	Ge Qiongxuan
	Zhao Lu

Cite this article:

Fan Enze,Li Yaohua,Ge Qiongxuan等. Feedforward Control Strategy of Dual Active Bridge Series Resonant Converter Based on Optimized Phase Shift[J]. Transactions of China Electrotechnical Society, 2022, 37(20): 5324-5333.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211774 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I20/5324

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