一种采用测量线圈技术的感应电能传输系统调频调谐方法研究  

A Measurement Coil Based Receiver's Resonant Frequency Tracking Technique for Inductive Power Transfer Systems

作　　者：麦瑞坤[1] 马晓晴[1] 陆立文 李勇[1] 符玲[1] 

机构地区：[1]西南交通大学电气工程学院,四川省成都市610031

出　　处：《中国电机工程学报》2017年第17期5125-5133,共9页Proceedings of the CSEE

基　　金：国家杰出青年科学基金(51525702);四川省青年科技基金(2016JQ0033)~~

摘　　要：为解决谐振参数容差导致感应电能传输系统失谐现象,该文采用在原边线圈并绕测量线圈的技术,以原边回路电流与测量线圈电路电压进行矢量运算得到的两者相位差为反馈量,间接获得副边回路的谐振状态,通过控制逆变器的输出电压频率,使副边回路恢复谐振状态,增大副边回路中负载的电压增益和系统输出功率,达到提高系统的电能传输效率的目的。实验结果表明,所采用的方法能够有效使副边回路恢复谐振状态,增大副边回路中的负载电压和系统输出功率,提高系统的电能传输效率。相对于系统调频调谐前,在谐振参数容差导致副边回路呈感性的情况下,调频调谐后系统输出功率最大提升144.15W,传输效率最大提升1.21%;在谐振参数容差导致副边回路呈容性的情况下,调频调谐后系统输出功率最大提升245.49W,传输效率最大提升1.72%。In order to overcome the drawbacks of the resonant frequency drifting of inductive power transfer （IPT） system due to the tolerance of the components, a measurement coil is parallel mounted with the transmitter coil to measure the phase of receiver current. Then, the phase differences of the transmitter and receiver currents is adopted as the feedback control parameters. Finally, the switching frequency of the inverter is regulated based on the resonant condition of receiver, so that not only the receiver operates under resonant condition but also the voltage gain, output power and the efficiency can be improved under all the circumstances. The control methods with and without the proposed strategy are employed to verified the performance. When the receiver appears inductive with tolerance, the maximum output power and system efficiency of proposed strategy are increased by 144.15W and 1.21%. At the same time, when the receiver appears capacitive with tolerance, the maximum output power and system efficiency of proposed strategy are increased by 245.49W and 1.72%.

关 键 词：感应电能传输 测量线圈 副边谐振 传输效率 

分 类 号：TM46[电气工程—电器]