公开(公告)号：US09995298B2

公开(公告)日：2018-06-12

申请号：US14948600

申请日：2015-11-23

Applicant: LG ELECTRONICS INC.

Inventor： Sungjin Lim ,  Daegeun Park ,  Youngwoong Song

IPC: F04B49/06 ,  F04B49/20 ,  F04B35/04 ,  F04B53/14 ,  F04B51/00 ,  F04B49/12 ,  H02K33/06 ,  H02K7/14

CPC classification number: F04B49/20 ,  F04B35/04 ,  F04B35/045 ,  F04B49/06 ,  F04B49/12 ,  F04B51/00 ,  F04B53/14 ,  F04B2201/02 ,  F04B2203/0401 ,  F04B2203/0402 ,  H02K7/14 ,  H02K33/06

Abstract: An apparatus and method for controlling a linear compressor and a linear compressor and a refrigerator having the same are provided. The apparatus may include a drive configured to drive the linear compressor based on a control signal, a detector configured to detect a motor current of the linear compressor, an asymmetric current generator configured to generate an asymmetric motor current by applying a current offset to the detected motor current, and a controller configured to generate the control signal based on the asymmetric motor current. The current offset may be changed based on a change in a position of a piston of the linear compressor.