1. Power Stabilization Strategy of Random Access Loads in Electric Vehicles Wireless Charging System at Traffic Lights
- Author
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Guo Jinpeng, Zhiren Liu, Wei Wang, Xueliang Huang, Han Liu, Linlin Tan, and Yan Changxin
- Subjects
Engineering ,Control and Optimization ,Steady state (electronics) ,020209 energy ,Energy Engineering and Power Technology ,02 engineering and technology ,lcsh:Technology ,Automotive engineering ,Set (abstract data type) ,opportunity wireless charging system ,electric vehicles ,power stabilization strategy ,Electric power system ,0202 electrical engineering, electronic engineering, information engineering ,Wireless ,Voltage source ,Electrical and Electronic Engineering ,Engineering (miscellaneous) ,Renewable Energy, Sustainability and the Environment ,business.industry ,lcsh:T ,020208 electrical & electronic engineering ,Electrical engineering ,Power (physics) ,business ,Random access ,Energy (miscellaneous) ,Voltage - 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.
- Published
- 2016