LCC-LC串联混合型抗偏移恒流无线充电

doi:10.19595/j.cnki.1000-6753.tces.210124

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Abstract Aiming at the problem of unstable charging current and low efficiency caused by offset of EV wireless charging coils, LCC-LC series with anti-offset constant current wireless charging structure based on parameter optimization is proposed. The mathematical model of LCC and LC compensation network is established to analyze the current output characteristics. It is found that the LCC output current is positively correlated with mutual inductance, while LC output current is negatively correlated with mutual inductance. The double-D Quadrature coil structure is adopted to solve the ipsilateral decoupling control of primary and secondary coils, thereby realizing load-independent constant current output of LCC and LC. Appropriate resonant network parameters are selected through parameter optimization, the voltage input of compensating network is complemented through series hybrid structure, and the system has anti-offset constant current output capability. Finally, a 310W experimental prototype was designed to investigate the misalignment tolerance of the system output current. The experimental results show that within the lateral offset range of 50%, the output current of the system can maintain good stability, fluctuates within 5% of the set value, and the maximum efficiency can reach 91%.

Key words： Wireless charging constant current output misalignment tolerance series hybrid structure LCC-LCC topology LC-LC topology

Received: 24 January 2021

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TM724

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	Articles by authors
	Gong Zhaowei
	Li Jingang
	Tong Xiangqian
	Zhang Ningchao

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Gong Zhaowei,Li Jingang,Tong Xiangqian等. LCC-LC Series Hybrid Wireless Charging with Misalignment Tolerance and Constant Current Output[J]. Transactions of China Electrotechnical Society, 2022, 37(6): 1513-1521.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210124 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I6/1513

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