Wireless charging is a new power supply scheme, and the advantage is that the electric energy can be transmitted to the user in the way of electromagnetic induction. This way could reduce the harm of bare wire. According to the characteristics of tram operation and wireless charging system, our team designed a high-power system. The main research direction: 1). Coupling mechanism design, 2). Topology compensation structure design, 3). Control algorithm design and Research on efficient energy allocation strategy. Recently our group added movable wireless charging system, which is considered to be applied in the automatic direction vehicle and other directions. And we expect to use the wireless charging system in real vehicle experiments.