Advanced Induction Heating Equipment using Dual Mode PWM-PDM Controlled Series Load Resonant Tank High Frequency Inverters


Vol. 7, No. 3, pp. 246-256, Jul. 2007
10.6113/JPE.2007.7.3.246


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 Abstract

In this paper, a novel type auxiliary active edge resonant snubber assisted zero current soft switching pulse modulation Single-Ended Push Pull (SEPP) series load resonant inverter using IGBT power modules is proposed for cost effective consumer high-frequency induction heating (IH) appliances. Its operating principle in steady state is described by using each switching mode’s equivalent operating circuits. The new multi resonant high-frequency inverter with series load resonance and edge resonance can regulate its high frequency output power under a condition of a constant frequency zero current soft switching (ZCS) commutation principle on the basis of the asymmetrical pulse width modulation (PWM) control scheme. Brand-new consumer IH products using the proposed ZCS-PWM series load resonant SEPP high-frequency inverter using IGBTs is evaluated and discussed as compared with conventional high-frequency inverters on the basis of experimental results. In order to extend ZCS operation ranges under a low power setting PWM as well as to improve efficiency, the high frequency pulse density modulation (PDM) strategy is demonstrated for high frequency multi-resonant inverters. Its practical effectiveness is substantially proved from an application point of view.


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Cite this article

[IEEE Style]

K. Fathy, S. Kwon and M. Nakaoka, "Advanced Induction Heating Equipment using Dual Mode PWM-PDM Controlled Series Load Resonant Tank High Frequency Inverters," Journal of Power Electronics, vol. 7, no. 3, pp. 246-256, 2007. DOI: 10.6113/JPE.2007.7.3.246.

[ACM Style]

Khairy Fathy, Soon-Kurl Kwon, and Mutsuo Nakaoka. 2007. Advanced Induction Heating Equipment using Dual Mode PWM-PDM Controlled Series Load Resonant Tank High Frequency Inverters. Journal of Power Electronics, 7, 3, (2007), 246-256. DOI: 10.6113/JPE.2007.7.3.246.