A novel active clamped resonant DC-link inverter is designed to solve the problem that clamped diode is under high voltage stress caused by coupled inductors that was tapped inductor method in passive clamped resonant DC-link inverters. The maximum voltage of the clamped diode in the clamped circuit did not exceed the maximum voltage of DC-bus voltage by using active clamped method. There is only one auxiliary switch in auxiliary resonant circuit

and it did not need to set clamped switch

so it is easy to control and the cost of hardware is lower. Besides

under the action of clamped circuit

the DC-link voltage could be clamped at 1.1~1.3 times of input DC-voltage

which reduced voltage pressure effectively. According to equivalent circuits under different stages

the paper analyzed the working process of the inverter. The experimental results demonstrated that switching devices achieved soft switching and efficiency by 96.5% under the rated power 3kW. Therefore

the proposed topology can improve efficiency effectively.