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.