| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a control method for measuring the resonance frequency of a resonance circuit comprising a heating coil and a resonance capacitor in an induction heating inverter in which induction heating of a pot is conducted. <P>SOLUTION: The induction heating inverter comprises a DC power source 1, an inverter main circuit in which arm circuits 2, 3 are bridge-connected, the resonance circuit comprising the heating coil 5 and the resonance capacitor 4, and the control circuit 20 controlling the inverter main circuit. Single shot voltage is applied to the resonance circuit through the DC power source 1 and the inverter main circuit with the control circuit 20 to start the resonance operation of the resonance circuit, the resonance frequency of the resonance circuit is introduced from the cycle of the resonance operation continued after starting, and based on the introduced resonance frequency, induction heating of the pot 9 on the heating coil 5 is conducted. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
