Title :
A new ZVS phase-shifted high-frequency resonant inverter incorporating asymmetrical PWM-based unit control for induction heating
Author :
Mishima, Tomokazu ; Takami, Chikanori ; Nakaoka, Mutsuo
Author_Institution :
Grad. Sch. of Maritime Sci., Kobe Univ., Kobe, Japan
Abstract :
A novel high-frequency (HF) soft switching resonant inverter for induction heating (IH) applications is presented in this paper. By adopting the phase shift-controlled two-inverter mode and the asymmetrical PWM-based single-inverter mode, the IH load resonant current can be regulated continuously under the full-load range soft switching conditions with maintaining high efficiency. The essential performances on the output power control and soft switching operations are demonstrated in experiments using a 450W-70 kHz prototype, then its topological validity is evaluated from the practical point of view.
Keywords :
PWM invertors; PWM power convertors; induction heating; power control; resonant invertors; resonant power convertors; thermal variables control; zero current switching; zero voltage switching; IH load resonant current; ZVS phase-shifted high-frequency resonant inverter; asymmetrical PWM-based single-inverter mode; asymmetrical PWM-based unit control; frequency 70 kHz; full-load range soft switching condition; high-frequency soft switching resonant inverter; induction heating; output power control; phase shift-controlled two-inverter mode; power 450 W; Inverters; Rectifiers; Switches; Zero voltage switching; asymmetrical PWM; high-frequency(HF) inverter; induction heating (IH); phase shift-control; pulse width modulation (PWM); zero voltage soft switching (ZVS);
Conference_Titel :
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-2419-9
Electronic_ISBN :
1553-572X
DOI :
10.1109/IECON.2012.6389377
