A Matrix Converter Based Wireless Power Transfer System for High-Speed Train

A matrix converter (MC) based wireless power transfer (WPT) system for high-speed train is proposed in this paper. The pantographs in conventional traction system are replaced with the transmitting and receiving coils in WPT system. Therefore, the reliability can be increased and the maintenance cost for pantographs will be reduced. Moreover, the DC-link capacitors which are required in conventional two-stage WPT system is eliminated with MC. Therefore, the system reliability and power density can be increased wilt the absence of physically large and heavy aluminum electrolytic capacitors. Finally, a laboratory prototype is designed and experiments are carried out to verify the effectiveness of the proposed MC based WPT system.