公开(公告)号：US20210352773A1

公开(公告)日：2021-11-11

申请号：US17313427

申请日：2021-05-06

Applicant: LG ELECTRONICS INC.

Inventor： Sihoon JEONG ,  Kyelyong Kang ,  Hanna Kim

IPC: H05B6/06 ,  H05B6/04 ,  H05B1/02 ,  H02M7/537

Abstract: An induction heating apparatus is configured to determine a third driving frequency corresponding to a third required power value when the required power value of the first working coil or the second working coil is changed to the third required power value, to calculate a difference value between the driving frequency of the working coil (the required power value of which is not changed) and the third driving frequency, to change an operation mode or a power control mode of the first inverter circuit or the second inverter circuit when the difference value is included in a predetermined first reference range, and to change an output power value of the working coil (the required power value of which is changed) to the third required power value.

公开(公告)号：US12232241B2

公开(公告)日：2025-02-18

申请号：US17063399

申请日：2020-10-05

Applicant: LG ELECTRONICS INC.

Inventor： Hanna Kim ,  Kyelyong Kang

IPC: H05B6/06 ,  H05B6/12

Abstract: A method for controlling an induction heating device includes acquiring a temperature value of a high-power working coil, when an absolute value of a difference between a first final driving frequency of a first working coil and a second final driving frequency of a second working coil is equal to or greater than a predetermined noise avoidance value and when a final driving frequency of a low-power working coil differs from a target frequency of the low-power working coil, determining whether the temperature value satisfies a predetermined output change condition, setting a required power value of the high-power working coil to a predetermined minimum power value when the temperature value satisfies the output change condition, and determining the first final driving frequency of the first working coil and the second final driving frequency of the second working coil again.

公开(公告)号：US12213234B2

公开(公告)日：2025-01-28

申请号：US17313500

申请日：2021-05-06

Applicant: LG ELECTRONICS INC.

Inventor： Sihoon Jeong ,  Kyelyong Kang ,  Hanna Kim

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

Abstract: An induction heating apparatus may include first/second working coils, first/second inverter circuits, and a controller. When a user changes a required power value of a first working coil or a second working coil to a third required power value, a controller determines a third driving frequency corresponding to the third required power value. The controller calculates a difference value between a driving frequency of the working coil, the required power value of which is not changed, and the third driving frequency, and compares the calculated difference value with a first reference range. When the calculated difference value is included in the first reference range, the controller changes an operation mode of a first inverter circuit from a full bridge mode to a frequency doubler mode, and changes an output power value of the working coil, the required power value of which is changed to the third required power value.

公开(公告)号：US11523472B2

公开(公告)日：2022-12-06

申请号：US16755406

申请日：2018-10-05

Applicant: LG ELECTRONICS INC. ,  UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)

Inventor： Kyelyong Kang ,  Jee Hoon Jung ,  Hee Jun Lee ,  Hwa Pyeong Park ,  See Hoon Jung

IPC: H05B6/06 ,  H05B6/04

Abstract: The present invention relates to an induction heating apparatus. In order to cope with various types of containers without increasing an operating frequency of an induction heating apparatus, the present invention compares a resistance value of a container with a predetermined reference resistance value, and determines an operating mode of a switching device according to a result of the comparison. According to the present invention, it is possible to use various types of containers without increasing an operating frequency of an induction heating apparatus, by adjusting a resonance frequency of a working coil according to a resistance value of a container used in the induction heating apparatus.

公开(公告)号：US09479097B2

公开(公告)日：2016-10-25

申请号：US14221439

申请日：2014-03-21

Applicant: LG ELECTRONICS INC.

Inventor： Kyelyong Kang ,  Jaemin Kim ,  Jinseok Hu ,  Shinhyun Park

IPC: H02P6/04 ,  H02P6/20

CPC classification number: H02P6/21 ,  H02P21/34

Abstract: Provided is a sensorless BLDC motor apparatus for providing a drive current allowing the rotor of the BLDC motor to be aligned in a predetermined direction during an initial position setting section (or for a first period of time), and providing a drive current allowing a frequency thereof to be varied at predetermined time intervals so as to accelerate the rotational speed of the BLDC motor during an open loop section (or for a second period of time), and a method using the same.

Abstract translation: 提供了一种无传感器BLDC电动机装置，用于提供驱动电流，其允许BLDC电动机的转子在初始位置设定部分（或第一时间段）期间沿预定方向对齐，并且提供允许频率 以规定的时间间隔进行变化，以便在开环部（或第二时间段）期间加速BLDC电动机的转速，以及使用该旋转速度的方法。