Design and simulation of soft start control circuit for induction heating circuit

With the development of modern induction heating power sources in the direction of high frequency and large capacity, the design and production of induction heating power supplies are increasingly demanding for switching devices. The soft switch technology keeps the voltage or current at zero during the switching process, which can weaken or even eliminate the switching loss. Its research and design are concerned by researchers in related fields. This paper introduces the related principle of soft-switching technology. Based on diode-rectified voltage-type induction heating power supply, a soft-start control circuit for induction heating power supply is designed, and the simulation model is built for the whole power supply system. Then it is studied in MATLAB/Simulink simulation environment. The simulation results were analyzed and compared with the theoretical values.