A clamped six-pulse cycloinverter with a series tuned load

This paper presents a clamped six-pulse cycloinverter for induction heating in the medium frequency range. The load-commutated circuit described here has the features of good output waveform, low SCR switching losses and an optimum performance in the frequency range of 400 Hz to 3KHz. The basic principles of operation and control of the cycloinverter with a series-tuned load are described. Steady state characteristics of the circuit as well as the effect of the output circuit component values on the performance of the cycloinverter are discussed.