公开(公告)号：US10982668B2

公开(公告)日：2021-04-20

申请号：US15857369

申请日：2017-12-28

Applicant: LG Electronics Inc.

Inventor： Sungjin Lim ,  Gyunam Kim ,  Nayi Ryu

IPC: F04B49/06 ,  F04B49/22 ,  F04B35/04 ,  G05B17/02

Abstract: Provided is a linear compressor capable of reducing noise and manufacturing cost. The linear compressor includes a piston reciprocating within a cylinder, a motor providing a driving force for movement of the piston, a sensing unit sensing a motor voltage and a motor current related to the motor, a discharge part installed at one end of the cylinder and adjusting discharge of a refrigerant compressed within the cylinder, and a controller detecting a load variation of the motor using at least one of the motor voltage and the motor current, calculating a compensation value related to a position of the piston each time a load variation of the motor is detected, and detecting an absolute position of the piston using the calculated compensation value.

公开(公告)号：US09970426B2

公开(公告)日：2018-05-15

申请号：US14867337

申请日：2015-09-28

Applicant: LG ELECTRONICS INC.

Inventor： Gyunam Kim ,  Kyunghoon Jung ,  Jaeyoo Yoo

IPC: F04B49/06 ,  F04B51/00 ,  F04B35/04 ,  H02P25/06

CPC classification number: F04B35/04 ,  F04B35/045 ,  F04B49/06 ,  F04B49/065 ,  F04B51/00 ,  F04B2203/0401 ,  F04B2203/0402 ,  H02P25/06

Abstract: An apparatus and method for controlling a linear compressor are provided. The apparatus and method may identify a kind of motor of a linear compressor, based on an output which may be measured by applying a test signal to the linear compressor, and may control the linear compressor depending on the identified kind of motor. The apparatus and method may diagnose whether the linear compressor has broken down, and thus, the kind of motor may be autonomously identified without a separate device or a measurement operation, control suitable for a characteristic or characteristics of the motor may be accurately and efficiently controlled, and maintenance, repair, and inspection of the linear compressor may be simply and easily performed.

公开(公告)号：US20180202430A1

公开(公告)日：2018-07-19

申请号：US15874116

申请日：2018-01-18

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghoon JUNG ,  Gyunam Kim

IPC: F04B49/06 ,  H02K33/00

CPC classification number: F04B49/06 ,  F04B35/045 ,  F04B49/065 ,  F04B2203/0401 ,  F04B2203/0402 ,  H02K33/00 ,  H02K33/02

Abstract: Disclosed is an apparatus for linear compressor which includes a drive unit configured to apply a test signal to the linear compressor, a current detection unit configured to detect a motor current of the linear compressor, a voltage detection unit configured to detect a motor voltage of the linear compressor, and a controller configured to acquire plural inductances varied according to a size of the motor current, based on a change of the motor current and the motor voltage which are acquired according as the test signal is applied.

公开(公告)号：US09670933B2

公开(公告)日：2017-06-06

申请号：US13752591

申请日：2013-01-29

Applicant: LG ELECTRONICS INC.

Inventor： Jaeyoo Yoo ,  Gyunam Kim ,  Boram Lee

IPC: F04D27/00 ,  F25B1/02 ,  F25B5/02 ,  F25B49/02 ,  F04B35/04 ,  F04B49/02 ,  F04B49/06 ,  F04D27/02 ,  F25B1/10

CPC classification number: F04D27/005 ,  F04B35/045 ,  F04B49/02 ,  F04B49/06 ,  F04B2203/0201 ,  F04B2203/0202 ,  F04B2203/0208 ,  F04D27/0269 ,  F25B1/02 ,  F25B1/10 ,  F25B5/02 ,  F25B49/022 ,  F25B2341/0661 ,  F25B2400/075 ,  F25B2500/19 ,  F25B2500/26 ,  F25B2600/021 ,  F25B2600/024 ,  F25B2600/23 ,  F25B2700/151 ,  Y02B30/741

Abstract: A compressor control apparatus, and a refrigerator including the same are provided. The operation of two compressors may be controlled using an alternating current (AC) switch, thereby minimizing a number of components, as well as increasing compressor capacity and enhancing operation efficiency. A plurality of operation modes may be used to correspond to a load or freezing capacity using two compressors, and the two compressors may be operated in a separate or simultaneous manner using a drive including two (AC) switches, thereby simplifying the configuration of the system.

公开(公告)号：US09618004B2

公开(公告)日：2017-04-11

申请号：US13748813

申请日：2013-01-24

Applicant: LG Electronics Inc.

Inventor： Gyunam Kim ,  Sungho Park ,  Taewoong Nah ,  Jaeyoo Yoo ,  Boram Lee

IPC: F04D27/00 ,  F04B35/04 ,  F04D27/02

CPC classification number: F04D27/00 ,  F04B35/045 ,  F04D27/02

Abstract: A compressor control apparatus, and a compressor control method. The compressor may be operated in an operation mode in which commercial power applied to the compressor does not pass through an alternating current capacitor when the load is in an overload state, thereby preventing the loss of a drive and effectively reducing the copper and core loss of the compressor.

公开(公告)号：US10935020B2

公开(公告)日：2021-03-02

申请号：US15874116

申请日：2018-01-18

Applicant: LG ELECTRONICS INC.

Inventor： Kyunghoon Jung ,  Gyunam Kim

IPC: F04B49/06 ,  F04B35/04 ,  H02K33/02 ,  H02K33/00

Abstract: An apparatus for linear compressor includes a drive unit configured to apply a test signal to the linear compressor, a current detection unit configured to detect a motor current of the linear compressor, a voltage detection unit configured to detect a motor voltage of the linear compressor, and a controller configured to acquire plural inductances varied according to a size of the motor current, based on a change of the motor current and the motor voltage which are acquired according as the test signal is applied.

公开(公告)号：US10119536B2

公开(公告)日：2018-11-06

申请号：US15519919

申请日：2015-11-02

Applicant: LG ELECTRONICS INC.

Inventor： Jaeyoo Yoo ,  Sungho Park ,  Gyunam Kim

IPC: H02K33/00 ,  F04B49/06 ,  F04B35/04 ,  H02P27/06 ,  H02M1/14 ,  H02M5/458 ,  H02P25/032

Abstract: A compressor control apparatus includes a rectifying unit configured to rectify power applied from the outside, a DC link unit configured to include a pair of capacitors and smooth the rectified voltage, an inverter unit configured to include a pair of switches and convert the smoothed DC voltage into a driving voltage of a motor according to a control signal, and a control unit configured to generate the control signal, wherein the control unit applies a DC offset voltage to the driving voltage according to a direction of a current applied to the motor on the basis of a result obtained by comparing voltages across the pair of capacitors.

公开(公告)号：US09091272B2

公开(公告)日：2015-07-28

申请号：US13749981

申请日：2013-01-25

Applicant: LG ELECTRONICS INC.

Inventor： Gyunam Kim ,  Jaeyoo Yoo ,  Boram Lee

IPC: H02P1/00 ,  H02P3/00 ,  H02P5/00 ,  F04D27/00 ,  F25B49/02 ,  F04B35/04 ,  F04D27/02

CPC classification number: F04D27/00 ,  F04B35/045 ,  F04D27/02 ,  F25B49/025 ,  F25B2600/021

Abstract: An apparatus and method for controlling a compressor are provided. A motor current flowing in a compressor may be calculated from voltage values of a capacitor without using a sensor, and as a motor current value is calculated by changing voltage values of the capacitor according to voltage values of a drive and performing a definite integral thereon, the motor current value may be resistant to noise, and the compressor may be more stably controlled.

Abstract translation: 提供一种用于控制压缩机的装置和方法。 可以在不使用传感器的情况下从电容器的电压值计算流过压缩机的电动机电流，并且通过根据驱动器的电压值改变电容器的电压值并在其上执行定积分来计算电动机电流值， 电动机电流值可以抵抗噪声，并且可以更稳定地控制压缩机。