Abstract
Induction heating power in metal melting, casting, forging and heat thoroughly, quenching, Bend, sintering, the surface heat treatment, brazing and other industries has been widely used. At the same time, induction heating power of the heating characteristics of high-power induction heating power supply design is of great significance. The design of 2 kHz/100kW IF induction heating power of the main circuit and control circuit design, using SCM IGBT control programmes and components, the use of EXB841 drive circuit, and the PWM chopper, over current detection, limit pressure limit Flow control, PLL control, introduced the main circuit parameters formula. Keywords induction heating series resonant DPLL