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Open AccessArticle

Research on an EV Dynamic Wireless Charging Control Method Adapting to Speed Change

1
Department of Electrical Engineering, Southeast University, NO. 2 Sipailou, Nanjing 210096, China
2
Jiangsu Key Laboratory of Smart Grid Technology and Equipment, Zhenjiang 212009, China
3
Shanghai Aerospace Control Technology Institute, No.1555, Zhongchun Road, Minhang District, Shanghai 221116, China
*
Author to whom correspondence should be addressed.
Energies 2019, 12(11), 2214; https://doi.org/10.3390/en12112214
Received: 11 May 2019 / Revised: 3 June 2019 / Accepted: 6 June 2019 / Published: 11 June 2019
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Abstract

In order to solve the problem of the electric vehicle (EV) charging amount fluctuation caused by the variation of driving speed during dynamic wireless charging, this paper proposes an EV dynamic wireless charging control method adapting to speed change. Firstly, a dynamic wireless charging model based on a long-track transmitting coil is established, and the expression of the charging power of each load under multi-load situation is obtained. Secondly, the influence of the EV charging number and maximum driving speed on the range of system parameters is studied. Subsequently, the method for determining the load resistance value according to the driving speed under a multi-EV charging condition is further discussed. Afterwards, a charging power control method adapting to the speed variation by load adjustment is proposed. By adjusting the equivalent load of the variable-speed charging EV, its speed variation range can reach 20~60 km/h, while the remaining EVs’ charging power fluctuation range can be kept within 10%~15%. Finally, the experimental prototype is built to verify the above-mentioned control method. View Full-Text
Keywords: magnetic resonant; DWPT (Dynamic Wireless Power Transmission); on-road charging; speed variation magnetic resonant; DWPT (Dynamic Wireless Power Transmission); on-road charging; speed variation
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Tan, L.; Zhao, W.; Ju, M.; Liu, H.; Huang, X. Research on an EV Dynamic Wireless Charging Control Method Adapting to Speed Change. Energies 2019, 12, 2214.

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