公开(公告)号：US09998059B2

公开(公告)日：2018-06-12

申请号：US15667455

申请日：2017-08-02

Applicant: LG ELECTRONICS INC.

Inventor： Gilsu Lee ,  Naechun Park ,  Kyunghoon Lee ,  Sungbae Song

IPC: H02P21/00 ,  H02P27/08 ,  H02P21/18 ,  H02P21/22 ,  H02P21/34

CPC classification number: H02P27/08 ,  H02P1/04 ,  H02P6/16 ,  H02P21/18 ,  H02P21/22 ,  H02P21/24 ,  H02P21/34

Abstract: A motor driving apparatus including a motor including a stator and a rotor rotating in the stator, an inverter configured to supply a driving voltage to a stator coil wound on the stator so as to rotate the rotor, and a control unit configured to, when a target command value is received, change a predetermined reference start-up time point to a start-up time point corresponding to an electrical angle position of the rotor in correspondence with the target command value per rotation of the rotor and to control the inverter to supply the driving voltage at the start-up time point.

公开(公告)号：US11375645B2

公开(公告)日：2022-06-28

申请号：US17052992

申请日：2018-11-21

Applicant: LG Electronics Inc.

Inventor： Namjoon Cho ,  Taejin Kim ,  Gilsu Lee

IPC: H05K7/20 ,  H01L23/473 ,  H02M7/44

Abstract: A power module of the present invention includes a power device for converting and outputting a frequency of an input power source, and a housing accommodating the power device therein and forming flow paths for a cooling fluid on both sides of the power device such that the cooling fluid can contact both sides of the power device. Accordingly, both plate surfaces of the power device can be in direct contact with the cooling fluid so as to be quickly cooled.

公开(公告)号：US10666118B2

公开(公告)日：2020-05-26

申请号：US14978844

申请日：2015-12-22

Applicant: LG ELECTRONICS INC.

Inventor： Jungdae Lee ,  Jongwon Kim ,  Kyunghoon Lee ,  Gilsu Lee

IPC: H02K11/33 ,  H02K11/02 ,  H05K1/18 ,  H05K1/09 ,  H05K1/11 ,  H02K11/25 ,  H05K7/20 ,  H05K1/02 ,  H05K7/14

Abstract: Embodiments provide a printed circuit board including a copper foil layer to form a circuit pattern on a base layer, and an insulation layer laminated on the copper foil layer, and wherein the circuit pattern includes a solder pattern, to which an inverter switch element is soldered to supply drive power to a motor, a heat radiation pattern spaced apart from the solder pattern and to contact with one surface of the inverter switch element so as to absorb and radiate heat in the inverter switch element, a heat circulation pattern, through which the heat absorbed by the heat radiation pattern is circulated, and an element pattern formed on both sides of the heat circulation pattern to allow a thermistor element, a resistance value of which is varied according to the heat, to be soldered to the element pattern.

公开(公告)号：US11831263B2

公开(公告)日：2023-11-28

申请号：US17295217

申请日：2019-01-07

Applicant: LG ELECTRONICS INC.

Inventor： Jungdae Lee ,  Sanggi Ko ,  Jaeyoon Oh ,  Gilsu Lee

IPC: H02P27/06 ,  H02M1/14 ,  H02P101/45

CPC classification number: H02P27/06 ,  H02M1/143 ,  H02P2101/45

Abstract: The present specification relates to a motor control device, a motor control system, and a motor control method. The motor control device measures a ripple voltage of a DC link capacitor to determine an appropriate switching frequency according to the ripple voltage, and causes a plurality of arithmetic processing units to selectively control a switching operation of the switching unit according to the determined switching frequency.

公开(公告)号：US09899951B2

公开(公告)日：2018-02-20

申请号：US15041659

申请日：2016-02-11

Applicant: LG ELECTRONICS INC.

Inventor： Gilsu Lee ,  Naechun Park ,  Kyunghoon Lee ,  Sungbae Song

IPC: H02P21/00 ,  H02P27/08 ,  H02P21/22 ,  H02P21/18 ,  H02P6/16 ,  H02P1/04 ,  H02P21/24

CPC classification number: H02P27/08 ,  H02P1/04 ,  H02P6/16 ,  H02P21/18 ,  H02P21/22 ,  H02P21/24 ,  H02P21/34

Abstract: A motor driving apparatus including a motor including a stator and a rotor rotating in the stator, an inverter configured to supply a driving voltage to a stator coil wound on the stator so as to rotate the rotor, and a control unit configured to, when a target command value is received, change a predetermined reference start-up time point to a start-up time point corresponding to an electrical angle position of the rotor in correspondence with the target command value per rotation of the rotor and to control the inverter to supply the driving voltage at the start-up time point.