三重移相调制模式下双有源变换器的直接功率控制

doi:10.19595/j.cnki.1000-6753.tces.211940

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Abstract In order to reduce the current stress and conduction loss of dual active bridge converter (DAB) and improve the efficiency of the converter, this paper proposes an optimal control method based on the inductor current under the mode of triple phase shift (TPS) modulation. Considering the complex optimization issue caused by DAB multi-mode operations in TPS modulation, a symmetric transformation and a space projection method based on an AC equivalent model are used to eliminate redundant feasible regions. Taking the minimum inductive current as the optimization object, this strategy uses the optimality conditions to resolve it. In addition, to improve the dynamic performance, a direct power control strategy (DPC) incorporated with a minimum inductor RMS current model is explored. In the case of input voltage fluctuation and load mutation, the converter can achieve accurate control output without overshoot within a few of duty cycles. Finally, the proposed strategy is verified on a low-power prototype using SiC devices.

Key words： Dual active bridge (DAB) converter triple phase shift (TPS) modulation optimality conditions solving direct power control

Received: 29 November 2021

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TM46

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	Articles by authors
	Gao Yu
	Li Ruoyu
	Li Linzhe
	Xie Xifeng
	Shu Zeliang

Cite this article:

Gao Yu,Li Ruoyu,Li Linzhe等. Triple Phase Shift Modulation-Based Direct Power Control Strategy for a Dual Active Bridge Converter[J]. Transactions of China Electrotechnical Society, 2022, 37(18): 4707-4719.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211940 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I18/4707

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