B-SITを用いた誘導加熱用SEPP-ZVS高周波インバータ(電気電子工学科)

概要

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B-SIT has an advantage that its on-resistance is extremely low compared to those of other power semiconductor switching devices. Accordingly, we can suppress its conduction losses during large current operation. Then, high conversion efficiency is expected when B-SITs are utilized as the switching devices of high frequency inverters. Here, we adopt newly developed B-SITs which have the maximum ratings 150V/50A and prepare a breadboard of a conventional single-ended push-pull (SEPP) high frequency inverter, which has a simplified circuit constitution and relatively wide range applications. This paper describes the characteristics of B-SIT on the basis of the experimental results of the breadboard from a practical point of view. Its operational frequency ranges from 25kHz to 100kHz. Its load is supposed to be the induction heating one for super-heated steam production. In addition, this paper mentions a high frequency inverter with extended soft switching region using an auxiliary switch, though its circuit constitution becomes rather complicated.
足利工業大学の論文
2006-03-20