Title :
An induction furnace employing with half bridge series resonant inverter
Author_Institution :
Dept. of Electr. & Comput. Eng., Kasetsart Univ., Nakhon, Thailand
Abstract :
In this paper, an induction furnace employing with half bridge series resonant inverter built around IGBT as its switching devices suitable for melting 500 grams of brass is presented. Melting times of 10 minutes were achieved at a power level of approximately 4 kW. The operating frequency is automatically tracked to maintain a small constant lagging phase angle using dual phase lock loop when brass is melted. The coil voltage is controlled to protect the resonant capacitors. The experimental results are presented.
Keywords :
bridge circuits; capacitors; coils; electric furnaces; induction heating; insulated gate bipolar transistors; phase locked loops; resonant invertors; voltage control; IGBT; brass melting; coil voltage control; constant lagging phase angle; dual phase lock loop; frequency tracking; half bridge series resonant inverter; induction furnace; power 4 kW; resonant capacitor protection; switching devices; time 10 min; Bridge circuits; Coils; Electromagnetic heating; Resonant frequency; Resonant inverters; Voltage control; brass melting; class D inverter; dual phase lock loop; series resonance;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2014 11th International Conference on
Conference_Location :
Nakhon Ratchasima
DOI :
10.1109/ECTICon.2014.6839871
