Research on DC-DC Converter for High Speed Train Auxiliary Power Supply System

According to the operating environment and requirements of high-speed train, the topology of the full-bridge LLC resonant converter is selected. The mathematical model is established based on the fundamental wave analysis method, and the resonant parameters are designed. A resonant capacitor voltage control strategy is designed, and the correctness of the parameter design and control strategy is preliminarily verified by MATLAB/Simulink simulation.