Research and Design on IGBT Induction Heating Power Supply

AbstractThis paper introduces a new method, using PLL and fixed angle control, to track the converter's frequency automatically. After analyzing the work state of parallel inverter, a new control method using closed-loop rectifier control of voltage and current. The commonly-happening faults in the IGBT Medium Frequency Induction Heating Power Supply is analyzed, and the corresponding protective measures and protection circuits are designed. 100kw / 8kHz Parallel induction heating power is developed, and the designed control method is verified to be scientific and effective