New efficient high-frequency load resonant-tank inverter with quasi-current resonant mode sub-circuits using static induction transistors/thyristors and its phase-shifted power regulation scheme

The authors discuss a resonant capacitor voltage-clamped type half-bridge topology for an instantaneous resonant current vector-regulated high-frequency inverter with phase shifting control, which efficiently operates with zero current soft switched quasi-resonant and load resonant tank circuit subresonant hybrid soft switching schemes. This inverter uses static induction (SI) devices (SI transistors and thyristors) and is more suitable for modern induction heating and melting power supplies industrial production plants. Analytical results and performance evaluations are presented. A breadboard of a trial inverter is demonstrated for the state-of-the-art induction heating power supply and is examined experimentally.<>