The ZVZCS Full Bridge Inverter Based on Bilateral Resonance

摘要

A ZVZCS full bridge inverter based on bilateral resonance is presented in this paper, based on the phase-shifted ZVS full bridge inverter, and it utilizes the resonance among the resisting electromagnetic deflection capacitor C_b, the capacitor C_r in the auxiliary network and the leakage inductor L_(lk) of the inverter transformer to realize the ZVZCS. Its steady-state mathematical model was founded and a 6kW, 38kHz experimental equipment was built. With the bilateral resonance, the C_b can be chosen with a relatively large value to improve the utility of the input voltage, and the voltage and current stress is dispersed to improve the reliability in the inverter. In addition, there is no big circulating current in the converter, all the passive components and active devices operate with the low current and voltage stress, and it has wide load range and small duty loss.