公开(公告)号：US20220256657A1

公开(公告)日：2022-08-11

申请号：US17667963

申请日：2022-02-09

Applicant: LG ELECTRONICS INC.

Inventor： Gwangrok KIM ,  Jung Youn Lee

IPC: H05B6/06 ,  H05B6/12 ,  H02M1/08 ,  H02M7/5387

Abstract: An induction heating apparatus may determine a required power value of a heating zone, based on a power level set for the heating zone, detect a container by using an inner working coil and an outer working coil, determine a working coil to be driven, based on results of the detection of the container, determine a driving mode of the working coil to be driven, based on the required power value, and provide a control signal, based on the driving mode.

公开(公告)号：US11943858B2

公开(公告)日：2024-03-26

申请号：US17218576

申请日：2021-03-31

Applicant: LG ELECTRONICS INC.

Inventor： Gwangrok Kim ,  Ho Yong Jang ,  Jung Youn Lee ,  Seongkyu Song

IPC: H05B6/06 ,  H05B6/04 ,  H05B6/36

CPC classification number: H05B6/06 ,  H05B6/04 ,  H05B6/36

Abstract: The present disclosure relates to an induction heating apparatus and a method of controlling the same. A controller of the induction heating apparatus according to the present disclosure may set an operation mode of an inverter circuit to a half bridge mode when a required power value of a working coil is set to a value less than a reference power value such that a driving frequency of the working coil decreases while an actual power value of the working coil is kept the same as the required power value. Additionally, the controller of the induction heating apparatus may adjust a duty ratio of a switching signal input to a switching element included in the inverter circuit, thereby adjusting the actual power value of the working coil.

公开(公告)号：US20220240354A1

公开(公告)日：2022-07-28

申请号：US17586075

申请日：2022-01-27

Applicant: LG ELECTRONICS INC.

Inventor： Gwangrok KIM ,  Jung Youn Lee

IPC: H05B6/06 ,  H05B6/12

Abstract: A method for controlling an induction heating apparatus comprises receiving a power level for a heating region, supplying a switching signal to an inverter circuit based on a predetermined reference frequency, measuring an output current value of the inverter circuit, measuring a DC link voltage value, calculating an output power value of the working coil based on the output current value of the inverter circuit and the DC link voltage value, determining a heating frequency of the inverter circuit based the result of comparison by comparing the output power value of the working coil with a required power value, and supplying a switching signal to the inverter circuit based on the heating frequency.