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

fYear

2012

fDate

25-28 Oct. 2012

Firstpage

3256

Lastpage

3261

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);

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

Conference_Location

Montreal, QC

ISSN

1553-572X

Print_ISBN

978-1-4673-2419-9

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2012.6389377

Filename

6389377