A cycloconvertor-linked induction heating system

A naturally commutated cycloconvertor-type frequency-changer system operating in the inverting mode has been used for the first time for the induction heating of metals, thus dispensing with the usual DC link. The proposed scheme has been mathematically analysed. Control schemes have been devised and are experimentally verified. The induction heating system based on this new concept has a number of advantages over the existing induction heating systems and has very good scope for commercial exploitation.