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Soft-switched PWM high-frequency load-resonant inverter for induction heating cooking appliance

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7 Author(s)
Izaki, K. ; Home Appliance Res. & Dev. Lab., Matsushita Electr. Ind. Co. Ltd., Osaka, Japan ; Hirota, I. ; Yamashita, H. ; Omori, H.
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There is a strong demand for high-power multi-burner induction-heating (IH) cooking appliances. It is known that acoustic noise can be generated when conventional frequency-controlled inverters are applied to multi burner IH cooking heaters. In order to eliminate the acoustic noise, this paper presents a prototype voltage-fed quasi-load resonant half-bridge inverter operating at constant frequency variable power (CFVP) regulation scheme which is more suitable for new high-frequency high-power IH cooking heater appliances. This application specific high-frequency inverter using new generation IGBTs can operate under a principle of ZVS-PWM strategy. The operating principle of a new inverter circuit is presented together with its power regulation characteristics on the basis of computer-aided simulation analysis and experimental results. The steady-state characteristics of this quasi-resonant inverter developed for IH cooking heater appliance are discussed

Published in:

Power Electronics and Drive Systems, 1997. Proceedings., 1997 International Conference on  (Volume:1 )

Date of Conference:

26-29 May 1997