基于多次级线圈的电动车辆无线充电抗偏移系统

Wireless charging anti-offset system for electric vehicles based on multiple secondary coils

提出了一种适用于电动车辆的多次级线圈无线电能传输系统,以提高次级侧的抗偏移能力,满足能量传输需求。该系统采用了一对多线圈拓扑结构,其中,次级侧的多个线圈采用多绕组变压器来实现功率集成。为在次级侧有较大水平偏移的条件下也能进行抗偏移,分析了多次级线圈的能量传输特性,进行了等效电路分析和Matlab仿真,并提出了一种多次级线圈的自适应工作模式。研究和实验表明,所提出的多次级线圈拓扑结构可以有效扩大无线电能传输系统的定位范围,提高次级侧的抗偏移能力。

A one-to-multiple coil wireless power transfer system for electric vehicles was proposed to improve the anti-drift ability of the secondary side and meet the demand of energy transmission.A topology of one-tomany coil was adopt in the system,in which multi-winding transformer was designed to realize power integration with multiple coils on the secondary side.In order to resist the drift even under the condition of large horizontal offset on the secondary side,the energy transmission characteristics of the multiple coils on the secondary side were analyzed,the equivalent circuit analysis and Matlab simulation were carried out,and a selfadaptive working mode of multiple secondary coils was proposed.The research and experiments show that the proposed topology with multiple secondary coils can effectively expand the positioning range of the wireless energy transmission system and improve the anti-offset ability of the secondary side.