Research on capacitor charging power supply for electric pulse de-icing device

In the context of ice removal from the power supply rails of urban rail transit, electro-impulse de-icing represents a novel research direction. The charging speed of the capacitor charging power supply in the electro-impulse system is a critical factor affecting the system's normal operation. Based on the working principle of the LC series resonant circuit, the output voltage and current characteristics under different modes have been analyzed. A calculation method for the optimal duty cycle based on the output voltage and current has been proposed, which can better achieve zero-current turn-off. A simulation model of the capacitor charging power supply has been constructed in MATLAB/Simulink, and the effectiveness of the optimal duty cycle calculation method has been verified.