无线电能传输系统三相相移控制逆变器研发

doi:10.19595/j.cnki.1000-6753.tces.161274

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摘要设计一种为无线电能传输系统提供高频交流电的三相相移控制逆变器。该逆变器由三相D类半桥逆变桥组成,其开关管运行于固定的切换频率下,通过调整各相半桥的驱动相位差来调节输出电压,从而实现无线电能传输系统功率的调节。对三相相移逆变器的主要性能,包括相移角与输出电压的关系、相电流、各相零电压切换状态等进行分析,并推导无线电能传输系统在使用相移控制和频率控制下的效率。开发三相的相移逆变器原型机并应用于无线电能传输系统,在两个外边长为90cm、70cm的平面矩形螺旋线圈间传输能量。实验表明当相移角从0°到120°之间调节时,在接收端10Ω电阻负载上接收到的功率从5.2kW到0变化。同时在最大输出功率时测得逆变器直流输入到接收端直流负载的DC-DC最大效率为94%。

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	邓其军
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关键词 ：相移控制逆变器, 相移角, 零电压切换, 无线电能传送, 功率控制

Abstract：A three-phase inverter with phase-shifted control for wireless power transfer system is developed in this paper. The inverter consists of three Class-D half inverters, whose MOSFETs operate at a constant switching frequency, and its output voltage is regulated via adjusting the driver angle among phases. Accordingly, the power regulation of wireless power transfer can be achieved. Main features of the inverter are analyzed, including the relationship between the output voltage and the phase-shift angle, the phase-currents, and ZVS conditions of each phase. Efficiencies under either phase-shift control and frequency-control are derived. An experimental prototype of phase-shift controlled inverter with 3 phases is developed and employed in a wireless power transfer system to deliver power between two planar rectangular solenoid coils with out-dimensions of 90cm×70cm. Experiments show that when the phase-shift angle is changed from 0 to 120 degree, the receiving power at the load of 10Ω at the secondary side varies between 5.2kW and 0kW. Meanwhile, when the system operates at the maximum output power, the DC-DC maximum efficiency is 94%, which is defined as the ratio of the DC-load power at the receiving side to the inverter DC-input power at the sending side.

Key words： Phase-shift controlled inverter phase-shift angle zero voltage switching wireless power transfer power control

出版日期: 2017-10-10

PACS:

TM724

作者简介: 邓其军男,1975年生,博士,副教授,研究方向为无线电能传输、谐振电力变换、电力信息化。E-mail: dqj@whu.edu.cn

引用本文:

邓其军, 刘姜涛, 陈诚, 周洪, 胡文山. 无线电能传输系统三相相移控制逆变器研发[J]. 电工技术学报, 2017, 32(18): 52-61. Deng Qijun, Liu Jiangtao, Chen Cheng, Zhou Hong, Hu Wenshan. Development of a Three-Phase Inverter with Phase-Shifted Control for Wireless Power Transfer System. Transactions of China Electrotechnical Society, 2017, 32(18): 52-61.

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