High frequency induction heating load resonant inverter with voltage-clamped quasi-resonant switched using newly-improved static induction transistors/thyristors and their phase shifted controlled scheme

The authors discuss a resonant capacitor voltage-clamped type half-bridge topology of a novel instantaneous resonant current vector-regulated high-frequency inverter with phase-shifting control, which efficiently operates at zero-current soft-switched quasi-resonant and load resonant tank circuit subresonant hybrid soft-switching schemes. This proposed multiresonant inverter version using static induction (SI) devices (SI transistors and SI thyristors) is more suitable for a modern induction-heating and melting power supply in industrial production plants. Its analytical results and performance evaluations are described through computer-aided simulation methods. A feasible breadboard of a trially produced inverter is demonstrated for the state-of-the-art induction heating power supply