Patent ID: 11943858
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. An induction heating apparatus comprising:
a working coil configured to support an object to be heated;
an inverter device to provide power to the working coil, the inverter device including a plurality of switching elements;
a driving circuit to provide a plurality of switching signals, each of the switching signals is to be provided to a different corresponding one of the plurality of switching elements;
a controller configured to provide a control signal to the driving circuit to control the plurality of switching signals, the controller is configured to:
change an operation mode of the inverter device to a half bridge mode when a set power value of the working coil is determined to be less than a predetermined reference power value,
change a duty ratio of a first one of the switching signals to a predetermined reference duty ratio, and
change an actual power value of the working coil to the set power value of the working coil.