| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To output a maximum power output in a zone in which the maximum power is to be output. <P>SOLUTION: An induction heating apparatus 100 comprises: a plurality of induction heating coils 11, 12, 13 arranged in adjacent to one another; capacitors 21, 22, 23 respectively connected with the induction heating coils in series; a plurality of reverse conversion devices 30, 35, 31 applying a high frequency voltage converted from a direct current voltage to each of series resonant circuits of the induction heating coils and the capacitors; and a control circuit 50 controlling a voltage width of a high frequency voltage and controlling the plurality of reverse conversion devices so as to align phases of coil currents respectively flowing in the plurality of induction heating coils. The control circuit causes the plurality of reverse conversion devices to have the same frequency and to synchronize the currents, and controls a phase difference to be minimum between the high frequency voltage generated by a specific reverse conversion device that supplies the maximum power to the plurality of induction heating coils and the coil current flowing in the series resonant circuits. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
