Abstract

Nowadays Induction heating (IH) technology is the heating technology of choice in modern domestic applications due to its high efficiency, fast heating, safety, and cleanness. With the development and improvement of power electronic devices, the technology of making this heating technology is more efficient and cost-effective. This paper presents a half-bridge series resonant inverter for induction heating (IH) application that works in two operating modes to improve the efficiency of this application in a wide power range. In this structure, to control the power output, changing the switching frequency is used for high power range, and pulse width modulation (PWM) is used for low power range, so that reduces the losses and increases the efficiency of the converter in all range power. The operating modes of the converter can be changed by changing the snubber and resonant capacitors through electromechanical switches. In order to show the feasibility, the simulated and experimental results for an IH rated on 1kw are presented.

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