INDUCTION HEATING APPARATUS AND INDUCTION HEATING APPARATUS CONTROL METHOD

PROBLEM TO BE SOLVED: To adjust a power factor suitable for a voltage change even when voltage applied to an induction coil is changed.SOLUTION: An induction heating apparatus of the present embodiment is an induction heating apparatus 1 for heating the same heated body 6 by a plurality of induction...

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1. Verfasser: SUMIYA TORU
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To adjust a power factor suitable for a voltage change even when voltage applied to an induction coil is changed.SOLUTION: An induction heating apparatus of the present embodiment is an induction heating apparatus 1 for heating the same heated body 6 by a plurality of induction coils 5 and comprises: an inverter 2 for supplying alternating current to the plurality of induction coils 5; feeders for wiring the inverter 2 and the plurality of induction coils 5 in parallel; matching transformers 3 for converting voltage in the middle of the feeders for applying different voltages to the induction coils 5, respectively; and power factor adjustment means 4 provided between each matching transformer 3 and each induction coil 5 for controlling current flowing in parallel with each induction coil 5.