摘要 在感应电能传输（inductive power transfer, IPT）系统中,采用单逆变器供电、多初级LCL线圈并联的分段导轨动态供电方法。但该方法存在以下问题,当电动汽车还在与第一个LCL初级线圈进行耦合时,其余所有并联LCL初级线圈都处于通电状态,且存在较大的初级线圈电流,会带来IPT系统功率损耗以及较大的电磁辐射。针对该问题,本文提出一种含有交流开关的LC网络,通过调节交流开关的通断,进而降低初级线圈电流大小,实现降低系统功率损耗、减少电磁辐射的目的。最后,通过搭建LCL-S的IPT实验系统,模拟电动汽车充电过程,实验结果表明所提方法切实有效地降低了初级线圈电流大小。
Abstract：In the Inductive Power Transfer (IPT) system, the dynamic power supply method of the subsection guide rail in parallel with the single inverter power supply and multi primary LCL coils. Butit causes the following problemwith this method, when the electric vehicle is coupled with the first LCLprimary coil, the other parallel LCL primary coils are energized, and the current of the primary coil is large, which brings IPT system power loss and large electromagnetic interference. To solve this problem, a LC network which contains the AC switch is proposed in this paper. The system’s power loss and the electromagnetic interferenceare reducedby adjusting the AC switch, regulating the current of the primary coil. Finally, the IPT experiment system is conducted to simulate the charging process of electric vehicle. The experimental results show that the proposed method effectively regulate the current of the primary coil.
2018, Vol. 19 
