A Review on Control Methods for Wireless Power Transfer System

Abstract

Abstract:

Control method is very important in applications for wireless power transfer technology (WPT). WPT main contains two different technologies: inductive coupling wireless power transfer technology (ICPT) and magnetic resonance coupling wireless power transfer technology (MRC). WPT system transmitting power is easily affected by their parameter changes and even environment changes. Characteristics of ICPT and MRC system, and theoretical analysis the equivalent circuit model are studied. Many control methods are detail studied for WPT system, and their advantage and disadvantage are discussed.

Key words: Wireless power transfer, control method, inductive coupling wireless power transfer, magnetic resonance coupling wireless power transfer

CLC Number:

TM131

Liao Chenglin,Li Junfeng,Tao Chengxuan,Wang Lifang,Deng Kai. A Review on Control Methods for Wireless Power Transfer System[J]. Journal of Electrical Engineering, 2015, 10(6): 1-6.

Figures/Tables 10

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控制策略	优点	缺点	适用范围
DC-DC 控制	控制精度高,调节范围宽	系统效率低,体积大,成本高	对控制精度要求较高的场合
移相控制	不需增加额外的电路,成本低	控制复杂,谐振电压波形容易畸变,增大EMI	中小功率系统
谐振补偿网络控制	能始终得到最大传输功率	系统体积大,控制精度低	功率及频率稳定性要求高的场合
调频控制策略	成本低,控制简单	非线性强,调功范围窄	调节功率范围比较窄的系统中