Optimization of dual side control strategy for wireless power transfer system in light rail vehicle

For the application of on-board energy storage equipment of rail transit vehicle, the bi-directional DC/DC is the significant converter. Considering the converter and super-capacitor load, the paper proposes a wireless charging circuit topology for the light rail transit. And a dual side control strategy is proposed to not only meet the requirements of the system energy output, but also maintain the high efficiency of the system. Firstly, the characteristics of topology are analyzed, and the buck circuit is proposed to regulate the output load, that means the DC/DC converter is used to maintain the system efficiency. And the phase shift control of inverter is adopted to maintain the super-capacitor constant current charging. Then the design process of dual side control is put forward. Finally, the feasibility of the control method is verified by experiments.