In this paper, a high-frequency alternating current (HFAC) current-fed resonant inverter applied in the auxiliary electrical system of electric vehicles (EV) is proposed. The output voltage of he existed HFAC CF push pull resonant inverter cannot be regulated and multiple modules cannot be connected in parallel. An improved topology is proposed. It can realize a wide range of input voltage and the voltage can be regulated against the line disturbance. The paper analyzes the operating principle and characteristics of the improved inverter. Finally, a prototype resonant inverter is designed to verify the analysis and effectiveness of the proposed topology.
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