Abstract
Induction heating power supply is a kind of equipment that makes use of the electromagnetic induction principle convert the electric power as thermal energy, which use semiconductor as the core component. Comparing with the other traditional heating equipment induction heating power supply tremendous advantage，and has an extensive application in the industrial production now. Its peculiarity is suitable be the power supply of the bearing induction heater.
The dissertation stresses on the design of the main circuit and control circuit for 500HZ/1000W induction heating application .choose the IGBT as the switching devices because of the larger technical and economic advantages than thyristor. It uses to thyristor rectifier circuit for the switching devices, get the DC voltage after Filter Regulator. Finally choose IGBT as switching devices in parallel full bridge inverter circuit. Analysis of the structure and principles of control circuit, select the appropriate circuit control circuit, according to various parameters of IGBT selected by calculated designed protect snubber circuit. As far as possible to refine the existing circuit . Using MATLAB product named branch simulink4 circuit simulate the already-designed circuit .
Keywords：Induction heating; IGBT modules ; power supplies; series resonance; control; inverter
