电动汽车动态无线供电系统发射单元切换模式分析

doi:10.19595/j.cnki.1000-6753.tces.190636

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Abstract In dynamic wireless charging (DWC) system, the alternate work of multi-transmitters is an effective way to improve the efficiency. Firstly, the paper inferred the mutual inductance expression, and then obtained the conclusion that mutual inductance changes with movement and then affects the transmission power. Secondly, in order to reduce the power fluctuation caused by transmitter switching and improve the stability of DWC system, the working cycle of the minimum dynamic coupling unit was analyzed. Three groups of simulation were designed and compared using the finite element software, which proved the dual coil supply scheme is more effective than alternate power supply scheme in improving mutual inductance and receiving power compared. In addition, a power supply mode with dual coil supply in the optimal range of 0.1m to 0.3m and single coil supply outside the optimal range was proposed. Finally, an experimental platform was built based on the proposed power supply scheme, which shows that the simultaneous power supply of the first and second transmitters in the optimal interval improves the stability of the DWC system and reduces the reduction of receiving power.

Key words： Electric vehicle dynamic wireless charging power supply mode optimal interval

Received: 25 May 2019

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TM72

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	Xue Ming
	Wang Jiahao
	Yang Qingxin
	Li Yang

Cite this article:

Xue Ming,Wang Jiahao,Yang Qingxin等. Analysis of Transmitter Unit Switching Mode in Dynamic Wireless Charging for Electric Vehicles[J]. Transactions of China Electrotechnical Society, 2020, 35(12): 2517-2525.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.190636 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I12/2517

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