Title :
Zero-current soft-switched high-frequency induction-heating inverter using bipolar-mode normally-off SITs
Author :
Ogiwara, Hiroyuki ; Nakaoka, Mutsuo
Author_Institution :
Dept. of Electr. Eng., Ashikaga Inst. of Technol., Tochigi, Japan
Abstract :
The authors present a voltage-fed/voltage-clamped high frequency induction heating quasi-resonant inverter circuit which uses a static induction transistor (B-SIT) for soft switching and a specially designed matching transformer which efficiently operates at zero-current soft-switching (ZCS) mode under a phase-shifting power regulation strategy. This voltage-clamped quasi-resonant inverter version using the newly developed B-SIT module is more suitable for modern induction heating and melting power supply in industrial production plants. Its operating principle is presented, including the control strategy, and its distinctive features are discussed. A detailed computer-aided characteristic analysis has been performed; various open-loop steady-state operating characteristics have been evaluated
Keywords :
bipolar transistors; circuit resonance; field effect transistors; induction heating; invertors; power supplies to apparatus; power transformers; power transistors; switching circuits; HF; ZCS; bipolar power transistors; computer-aided characteristic analysis; high frequency induction heating; matching transformer; melting power supply; operating characteristics; phase-shifting power regulation; quasi-resonant inverter; soft switching; static induction transistor; Electrical equipment industry; Electricity supply industry; Frequency; Open loop systems; Performance analysis; Production; Resonant inverters; Switching circuits; Zero current switching; Zero voltage switching;
Conference_Titel :
Industry Applications Society Annual Meeting, 1993., Conference Record of the 1993 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-1462-X
DOI :
10.1109/IAS.1993.299035
