A Three-Phase Dynamic Wireless Charging System with Constant Output Voltage

被引：17

作者：

Mai, Ruikun ^{[1
]}

Li, Hongchao ^{[1
]}

Liu, Yeran ^{[1
]}

Zhou, Kunzhuo ^{[1
]}

Fu, Ling ^{[1
]}

He, Zhengyou ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu 610031, Sichuan, Peoples R China

来源：

ENERGIES | 2018年 / 11卷 / 01期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

wireless power transfer; three-phase inverter; dynamic charging; POWER TRANSFER SYSTEM; ELECTRIC VEHICLES; EVS;

D O I：

10.3390/en11010045

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A dynamic wireless power transfer (WPT) system is an effective method, which can reduce charging time and extend the driving range of the electric vehicles. In the dynamic WPT systems, the output voltage may fluctuate when the receiver moves along the transmitter coils. This paper proposes a three-phase dynamic WPT charging system with overlapped three-phase transmitter coils. The overlap length is optimized to depress the fluctuation of the output voltage. These coils are powered by a three-phase inverter to generate an even magnetic field, and a unipolar coil is employed as a receiver to simplify the coil structure of the secondary side. Based on the proposed three-phase coil structure, the output voltage characteristics of the system are analyzed in detail. A 500 W dynamic charging prototype is established to validate the proposed dynamic charging system. Experimental results show that the output voltage fluctuation is within +/- 3.05%. The maximum system efficiency reaches 89.94%.

引用

页数：12

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