INDUCTION HEATING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a control method which can deal with a reverse flow of power occurring when driven in an inverter output phase of beyond ±90 degrees in a mutual induction condition where output power=0, that is, power factor=0 when driven in the inverter output phase of +90 degrees or -90 degrees.SOLUTION: In an induction heating apparatus, a power supply 32 for supplying power to each of a plurality of induction heating coils 12a, 12b which are mutually inducted with each other is controlled such that operation frequencies become the same with each other and a power supply output phase &thetas; remains within a range represented as 90°>|&thetas;|.