Patent ID: 11895758
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A cooking apparatus comprising:
a working coil;
an inverter configured to output a resonant current to the working coil;
a current detector configured to detect the resonant current and output a detection value corresponding to the resonant current;
a voltage detector configured to detect an input voltage to the cooking apparatus; and
a controller configured to:
control the inverter to flow a first resonant current through the working coil,
control the inverter to flow, through the working coil, a second resonant current having a frequency different from the first resonant current,
compensate (i) a first detection value for the first resonant current based on the detected input voltage and (ii) a second detection value for the second resonant current based on the detected input voltage,
determine, based on a difference between the compensated first detection value and the compensated second detection value, whether a target object that is located adjacent to the working coil is a predetermined object, and
control, based on the target object being the predetermined object, the inverter according to a preset control value for the predetermined object, to thereby heat the target object.