摘要
基于谐波的移相控制利用谐波进行功率传递,是无线电能传输中一种新型功率控制方法,可以克服传统移相控制在轻载工况下效率低的问题。该文建立考虑谐波的感应耦合无线电能传输(ICPT)系统数学模型,分析不同开关频率和移相角下的输出功率变化特性,研究考虑逆变器死区影响下的谐波切换方法,最后提出了一种采用电流平均值进行谐波电流检测的方法,研究并实现了基于谐波移相控制的一次电流闭环控制策略。仿真和实验均验证了基于谐波移相闭环控制的有效性,既能有效提高轻载下无线电能传输的效率,又具有较好的控制特性。
Harmonic based phase-shifted control(HPSC)is a novel power control method for wireless power transmission,which adopts harmonics to transmit power it overcomes the poor efficiency problem of traditional phase shift control at light load condition.The mathematical model of inductive coupling power transfer(ICPT)considering the harmonics is built,the variation of output power characteristics at different switching frequency and phase angle is analyzed,and the harmonic switching method considering the inverter dead time is studied also.Harmonic current average detection method is put forward for the primary current control.At last,the primary current closedloop control strategy based on harmonic phase-shifted control is researched and realized.Both simulation and experiment verify the effectiveness of the closed-loop control based on harmonic phase-shifted control.It can not only effectively improve the transmission efficiency of ICPT under light load,but also has better control characteristics.
作者
蔡华
史黎明
李勇
李旺
袁红升
Cai Hua;Shi Liming;Li Yong;Li Wang;Yuan Hongsheng(Beijing Institute of Mechanical Equipment Beijing,100854,China;Key Laboratory of Power Electronics and Electric Drive Institute of Electrical Engineering,Institute of Electrical Engineering Chinese Academy of Sciences,Beijing,100190,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2018年第A01期1-8,共8页
Transactions of China Electrotechnical Society
关键词
无线电能传输
谐波
移相控制
闭环控制
功率调节
效率
Wireless power transfer
harmonic
phase shift control
closed-loop control
power regulation
efficiency
