Title :
A half-bridge resonant inverter with three-phase PWM rectifier for induction heating
Author :
Hathairatsiri, Vichian ; Chudjuarjeen, Saichol ; Chakkuchan, Panithan ; Sangswang, Anawach ; Koompai, Chayant
Author_Institution :
Dept. of Electr. & Telecommun. Eng., Rajamangala Univ. of Technol. Krungthep, Bangkok, Thailand
Abstract :
A half-bridge resonant inverter with three-phase PWM rectifier for induction heating is proposed in this paper. An adjustable frequency limit is introduced to maintain the inverter´s switching frequency at a value higher than the resonant frequency for zero voltage operation. In case of no work piece in the induction coil, the dc bus can be adjusted while the switching frequency of the inverter remains at the limit. The important advantages of the proposed system are reduced switching loss, small size of filter and faster response at a no load condition. The proposed technique is implemented on the created hardware setup. The inverter operates at in a frequency range of 20-40 kHz, while the three-phase PWM rectifier runs at 23.8 kHz to deliver output power at 1.5 kW.
Keywords :
PWM invertors; PWM rectifiers; bridge circuits; induction heating; switching convertors; adjustable frequency limit; frequency 20 kHz to 40 kHz; half-bridge resonant inverter; induction heating; inverter switching frequency; power 1.5 kW; three-phase PWM rectifier; Coils; Filters; Hardware; Pulse width modulation inverters; Rectifiers; Resonant frequency; Resonant inverters; Switching frequency; Switching loss; Zero voltage switching;
Conference_Titel :
Electrical Engineering/Electronics Computer Telecommunications and Information Technology (ECTI-CON), 2010 International Conference on
Conference_Location :
Chaing Mai
Print_ISBN :
978-1-4244-5606-2
Electronic_ISBN :
978-1-4244-5607-9
