Title :
Practical evaluations of load-adaptive variable-frequency high-frequency resonant PAM inverter using static induction power transistors for industrial induction-heating plants
Author :
Okuno, A. ; Hayashi, M. ; Kawano, H. ; Nagai, S. ; Nakaoka, M.
Author_Institution :
Shinko Electric Co., Ltd., Japan
Abstract :
The authors describe the latest developments pertaining to the voltage-fed series load resonant high-frequency high-power inverter using static induction transistors (SITs) for industrial induction heating power supply, which implements a load-adaptive variable frequency tuned-controller, a PAM (pulse-amplitude-modulated) AC/DC power converter for variable voltage/power, and protective system control schemes. A practical short-circuit test of this SIT inverter has been performed to obtain basic data relating to switching characteristics of large-capacity SITs incorporated in this inverter circuit and to design cost-effective protective circuits of SITs and their optimum snubber circuits for SIT switching-legs
Keywords :
circuit resonance; field effect transistors; induction heating; invertors; load (electric); overcurrent protection; power convertors; power supplies to apparatus; power transistors; pulse amplitude modulation; semiconductor switches; switching circuits; AC/DC power converter; HF; design; developments; induction heating; load-adaptive variable frequency tuned-controller; power supply; protective circuits; resonant PAM inverter; short-circuit test; snubber circuits; static induction power transistors; switching characteristics; Circuit testing; Electrical equipment industry; Electricity supply industry; Frequency conversion; Industrial control; Inverters; Power system protection; Pulsed power supplies; Resonance; Switching circuits;
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.1993.298993
