Power Stabilization Strategy of Random Access Loads in Electric Vehicles Wireless Charging System at Traffic Lights

Linlin Tan, Han Liu, Zhiren Liu, Jinpeng Guo, Changxin Yan, Wei Wang and Xueliang Huang
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Linlin Tan: Department of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
Han Liu: Department of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
Zhiren Liu: State Grid Wuxi Power Supply Company, No. 12 Liangxi Road, Wuxi 214000, China
Jinpeng Guo: Department of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
Changxin Yan: Department of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
Wei Wang: Department of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China
Xueliang Huang: Department of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing 210096, China

Energies, 2016, vol. 9, issue 10, 1-14

Abstract: An opportunity wireless charging system for electric vehicles when they stop and wait at traffic lights is proposed in this paper. In order to solve the serious power fluctuation caused by random access loads, this study presents a power stabilization strategy based on counting the number of electric vehicles in a designated area, including counting method, power source voltage adjustment strategy and choice of counting points. Firstly, the circuit model of a wireless power system with multi-loads is built and the equation of each load is obtained. Secondly, after the counting method of electric vehicles is stated, the voltage adjustment strategy, based on the number of electric vehicles when the system is at a steady state, is set out. Then, the counting points are chosen according to power curves when the voltage adjustment strategy is adopted. Finally, an experimental prototype is implemented to verify the power stabilization strategy. The experimental results show that, with the application of this strategy, the charging power is stabilized with the fluctuation of no more than 5% when loads access randomly.

Keywords: opportunity wireless charging system; electric vehicles; power stabilization strategy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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