Design and power quality analysis of high frequency series resonant inverter for induction furnace

Now a day's energy crisis is one of the major issue, in order to utilize the available power in efficient manner different technologies are improving among those high frequency induction heating is also one. In most of the engineering applications we found induction heating is a powerful technique for providing high temperature to several applications such as steel melting, soldering, cooking etc. This paper proposes a high frequency resonant inverter for fast, efficient, precise and non-contact method for heating metals. Boost converter maintain the dc link voltage to lower value and improve the power quality. To provide high temperature within a short period, induction furnace is made to operate at resonant frequency, because at resonant frequency current is amplified, which keeps the reactive power low and allow heating the work piece with large current. The circuit is designed and simulated using PSIM.