Title :
A 50-150 kHz half-bridge inverter for induction heating applications
Author :
Kamli, Mokhtar ; Yamamoto, Shigehiro ; Abe, Minoru
Author_Institution :
Dept. of Electr. Eng., Kyoto Univ., Japan
fDate :
2/1/1996 12:00:00 AM
Abstract :
A half-bridge resonant-type IGBT inverter suitable for heating magnetic and nonmagnetic materials at high-frequency is described. A series-parallel arrangement of capacitors is adopted and an optimum mode of operation is proposed. In this mode, the inverter is operated at unity power factor by PLL control irrespective of load variations, with maximum current gain, maximum overall system efficiency, and practically no voltage spikes in the devices at turn-off. The actual performance was tested on a 50-150 kHz prototype rated at 6 kW. The low-cost developed hybrid inverter is characterized by its simplicity of design and operation, yet is versatile in performance. A simplified analysis and detailed experimental results are presented
Keywords :
DC-AC power convertors; bridge circuits; induction heating; insulated gate bipolar transistors; invertors; power factor; power supplies to apparatus; 50 to 150 kHz; 6 kW; IGBT inverter; half-bridge inverter; high-frequency; induction heating; load variations; magnetic materials; maximum current gain; maximum overall system efficiency; nonmagnetic materials; series-parallel capacitors arrangement; unity power factor; Capacitors; Control systems; Heating; Insulated gate bipolar transistors; Inverters; Magnetic materials; Magnetic resonance; Phase locked loops; Reactive power; Voltage control;
Journal_Title :
Industrial Electronics, IEEE Transactions on
