COMPRESSOR DRIVING APPARATUS AND REFRIGERATOR INCLUDING THE SAME

Title:

COMPRESSOR DRIVING APPARATUS AND REFRIGERATOR INCLUDING THE SAME

Document Type and Number:

WIPO Patent Application WO/2018/186686

Kind Code:

A1

Abstract:

Disclosed herein are a compressor driving apparatus and a refrigerator including the same. A compressor driving apparatus includes: a plurality of switching elements; an inverter for converting direct current (DC) power into alternating current (AC) power according to a switching operation to output the converted AC power to the motor; an output current detector for detecting an output current flowing through the motor; and an inverter controller for controlling the inverter based on the output current, wherein the inverter controller controls the piston so that one end of the piston is fixed at a first position spaced apart from the discharge unit at stroke of the piston during a first period, controls the piston to collide with the discharge unit when a change rate in an operation rate or a position error of the compressor is equal to or greater than a predetermined value, and controls the piston so that the one end of the piston is fixed at a second position spaced apart from the discharge unit at stroke of the piston during a second period after the collision of the piston. Accordingly, control accuracy may be improved and a noise may be reduced upon piston position based operation control.

Inventors:

RYU NAYI (KR)

Application Number:

PCT/KR2018/003991

Publication Date:

October 11, 2018

Filing Date:

April 04, 2018

Export Citation:

Click for automatic bibliography generation Help

Assignee:

LG ELECTRONICS INC (KR)

International Classes:

F25B49/02; F25D29/00; H02M7/48; H02P27/06

Foreign References:

KR20060011058A	2006-02-03
KR20160063880A	2016-06-07
KR20120137899A	2012-12-24
US20030099550A1	2003-05-29
CN105241172A	2016-01-13

Other References: