公开(公告)号：US20210021275A1

公开(公告)日：2021-01-21

申请号：US16878825

申请日：2020-05-20

Applicant: LG Electronics Inc.

Inventor： Yongsoo CHO ,  Taekyoung KIM ,  Sanghoon NAM ,  Namsik YIM

IPC: H03M1/10

Abstract: A control apparatus that controls a resolution according to a signal of a motor is provided. The apparatus comprises a measurement unit configured to measure a voltage and an electric current of the signal, an amplification unit comprising a first variable resistor, and a micro control unit (MCU) comprising first, second, and third lookup tables. The amplification unit is configured to amplify the signal according to a first gain corresponding to a resistance value and generate an output signal. The MCU is configured to set the resolution, divide the signal, generate the output signal, set a measurement range corresponding to a first gain, and control the resistance value. The MCU is configured to control the resistance value according to a comparison between the set measurement range, comprising a range of voltages proportional to a magnitude of the gain, and a range of possible measurement set corresponding to the signal.

公开(公告)号：US20200032795A1

公开(公告)日：2020-01-30

申请号：US16438903

申请日：2019-06-12

Applicant: LG ELECTRONICS INC.

Inventor： Joohyung KIM ,  Sanghoon NAM ,  Taesang PARK ,  Yicheol CHOI

IPC: F04C18/02 ,  F04C23/00 ,  F04C27/00 ,  F04C29/02 ,  F04C29/04

Abstract: An electric compressor includes a main housing including a motor chamber. The motor chamber includes a driving motor. The compressor includes a frame fixed to one end of the main housing, a first scroll supported by one side surface of the frame, and a second scroll provided between the frame and the first scroll. The second scroll, supported by the frame, makes an orbiting motion upon receiving a rotational force from the driving motor. The second scroll also forms a compression chamber with the first scroll and a back pressure space with the frame. A rear cover coupled to the main housing forms a discharge space with the first scroll. A back pressure flow channel extends through the first scroll and the frame to guide a refrigerant and oil from the compression chamber to the discharge and back pressure spaces. The compressor also includes a plurality of decompression portions.

公开(公告)号：US20200036313A1

公开(公告)日：2020-01-30

申请号：US16523430

申请日：2019-07-26

Applicant: LG ELECTRONICS INC.

Inventor： Sanghoon NAM ,  Taekyoung KIM ,  Namsik YIM

IPC: H02P21/34 ,  H02P21/18 ,  H02P21/22 ,  H02P27/12 ,  F04D27/00 ,  F04D25/06

Abstract: The present disclosure relates to an apparatus for controlling a compressor, a control system for a compressor, and a method for controlling a compressor, whereby a rotor is aligned by exciting each phase of a stator according to a preset reference order to thereby control operation of the motor, when operation of a motor of a compressor starts.

公开(公告)号：US20200032805A1

公开(公告)日：2020-01-30

申请号：US16523472

申请日：2019-07-26

Applicant: LG Electronics Inc.

Inventor： Namsik YIM ,  Junyoung LIM ,  Taekyoung KIM ,  Sanghoon NAM

IPC: F04D27/00 ,  F04D25/06

Abstract: The present disclosure relates to a compressor control apparatus, a compressor control system, and a compressor control method for controlling the switching operation of a plurality of switching modules according to a preset control criterion to discharge residual charge remaining in an electrolytic capacitor.