Bilateral LCC topology MC-WPT system secondary side no-load constant voltage control

The bidirectional wireless charging system for electric vehicles usually adopts a bilateral LCC topology to ensure high transmission efficiency. But when the constant current output topology compensation electric vehicle wireless charging system is in an unloaded working state, it is necessary to control the secondary DC output voltage within a safe threshold to ensure the stable operation of the system. This article proposes a constant voltage output strategy for the active bridge on the secondary side to control the phase angle of the secondary side when the voltage exceeds the threshold under no-load conditions. The strategy achieves constant voltage output of the active bridge on the secondary side under no-load conditions.