公开(公告)号：US20230223882A1

公开(公告)日：2023-07-13

申请号：US18009585

申请日：2020-06-18

Applicant: LG Electronics Inc.

Inventor： Sunku KWON ,  Chaseung JUN ,  Jaehoon JEONG ,  Jungik HA

IPC: H02P27/06 ,  H02M7/5387 ,  H02P6/08

CPC classification number: H02P27/06 ,  H02M7/5387 ,  H02P6/085 ,  H02P6/28

Abstract: The present disclosure relates to a motor assembly, and more particularly, to a motor having a two-phase input power source and a power conversion device for driving a two-phase motor. The present disclosure relates to the motor assembly for driving the two-phase motor, the motor assembly configured to comprise: a motor including a first winding and a second winding having an electrically insulated parallel structure; a DC-link circuit for supplying a direct-current voltage; and an inverter connected to the DC-link circuit to convert the direct-current voltage into an alternating-current voltage to drive the motor, and including a first switching element set connected to the first winding and a second switching element set connected to the second winding.

公开(公告)号：US20180289229A1

公开(公告)日：2018-10-11

申请号：US15766701

申请日：2016-10-07

Applicant: LG Electronics Inc. ,  Seoul National University R&DB Foundation

Inventor： Jongwon KIM ,  Jungdae LEE ,  Myungkeun YOO ,  Junho AHN ,  Jungik HA ,  Sungho JUNG ,  Jaeyong PARK

IPC: A47L9/28 ,  H02P21/14 ,  H02P27/06

Abstract: The present invention relates to a motor driving apparatus and a home appliance comprising the same. The motor driving apparatus according to an embodiment of the present invention comprises: an inverter which converts a direct current power source of a DC stage capacitor to an alternating current power source and outputs the converted alternating power source to a motor by a switching operation; a DC stage resistance device arranged between the DC stage capacitor and the inverter; and a control unit which controls the inverter on the basis of phase current sampled by means of the DC stage resistance device, wherein the control unit controls the frequency of voltage applied to the motor or the rotation frequency of the motor to be synchronized with the sampling frequency of the phase current sampled via the DC stage resistance device. Accordingly, it is possible to accurately calculate the phase current flowing through the motor by means of the DC stage resistance device.