模块化多端口无线电能DC-DC变换器建模及其多向功率流解耦控制策略

doi:10.19595/j.cnki.1000-6753.tces.220977

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Abstract Multiport wireless DC-DC converter (MWiDC) has the potential to realize efficient multiport power conversion with high-level flexibility and expansibility. However, its system modeling and power flow management need more general theory. Therefore, this paper proposes a modular MWiDC. Firstly, a model of an arbitrary MWiDC is established, and a power-voltage hybrid decoupling control (PVHDC) strategy is designed. The closed-loop DC gain, high-frequency characteristic, and stability under the PVHDC strategy are demonstrated. This paper also analyzes the direct control strategy (DCS) without decoupling for comparison. However, the closed-loop stability of the DCS still needs to be proved due to the system’s complexity. Finally, the experiment and simulations are carried out on a three-port prototype. The experimental results show that the prototype can realize zero voltage switching with an efficiency of 91%. The simulation indicates that both PVHDC and DCS can realize voltage-power hybrid control, but PVHDC has a stronger anti-disturbance.

Key words： Multiport DC-DC converter (MDC) wireless power transfer (WPT) decoupling control multidirectional power flow (MPF)

Received: 31 May 2022

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TM724

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	Song Zhao
	Liu Ming

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Song Zhao,Liu Ming. Modular Multiport Wireless DC-DC Converter with Multidirectional Power Flow and Its Decoupling Control Strategy[J]. Transactions of China Electrotechnical Society, 2022, 37(24): 6262-6271.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.220977 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I24/6262

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