Yingchao Zhang, Liping Jin, Y. Jing, Zhengming Zhao, T. Lu
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引用次数: 10
Abstract
This paper describes a new type charger for electric vehicle (EV) batteries. The three-level PWM rectifier used Metal-Oxide-Semiconductor-Field-Transistor (MOSFET) with direct power control based on space vector PWM (DPC-SVM) is adopted in the front-end PWM rectifier to achieve high power factor as well as reduce system cost, and full-bridge (FB) converter with phase-shifted zero-voltage zero-current-switching (ZVZCS) is applied to the back-end DC/DC converter to improve system efficiency. Decoupling control for instantaneous active and reactive powers of the grid is realized. Experimental results in 8kW prototype show that during the whole charging process, the system efficiency is higher than 85.1% and the input power factor is higher than 99.9%.
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