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.