A high efficiency of a Class-D resonant inverter high power factor for induction heating multi-coils hardening application

This paper presented a high efficiency Class-D resonant inverter high power factor for induction heating multi-coils hardening application. The main function of the Class-D resonant inverter is to provide high frequency AC from bridge rectifier and LC filter input voltage. The advantages of this tec...

Full description

Saved in:
Bibliographic Details
Published in2013 IEEE 10th International Conference on Power Electronics and Drive Systems (PEDS) pp. 872 - 875
Main Authors Haema, J., Bilsalam, A., Ekkaravarodome, C., Jirasereeamornkul, K.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2013
Subjects
Class D
Coils
Electromagnetic heating
Inductance
induction hardening
LLC resonant
power factor
Reactive power
Resonant frequency
Resonant inverters
Voltage measurement
zero voltage switching
Online AccessGet full text

Cover

More Information
Summary:This paper presented a high efficiency Class-D resonant inverter high power factor for induction heating multi-coils hardening application. The main function of the Class-D resonant inverter is to provide high frequency AC from bridge rectifier and LC filter input voltage. The advantages of this technique, the power switched are operated under the zero voltage switching condition and the leakage inductance of transformer can be used the LLC resonant. A prototype Class-D operating at a 102 kHz fixed frequency, 730 W maximum input power. Experimental results, induction hardening had a near unity power factor, total harmonic distortion of the input current THD i 6.5 %, it can be heat up 2 work pieces a same size diameter 9.5-mm from room temperature to 400°C within about 1 minutes and 92 % efficiency at full power.
ISBN:9781467317900
146731790X
ISSN:2164-5256
DOI:10.1109/PEDS.2013.6527140