COMPRESSOR, MONITORING SYSTEM, AND METHOD OF MONITORING COMPRESSOR

WIPO Patent Application WO/2021/084821

A1

Provided are a compressor, a monitoring system, and a method of monitoring a compressor, which can monitor the remaining life of a semiconductor element of a motor control device while reducing processing load.　This compressor (1) comprises: a motor control device (10) that controls the rotation speed of a motor (2); a compressor body (3) driven by the motor (2) to compress air; a pressure sensor (20) provided on a discharge side of the compressor body (3); and an operation controller (11) that switches between a load operation and a no-load operation on the basis of the pressure detected by the pressure sensor (20). When switching from the no-load operation to the load operation, a motor controller (26) of the motor control device (10) calculates the relative temperature of a semiconductor element relative to a reference temperature using the temperature of the semiconductor element detected by the temperature sensor (27), and calculates the amount of a change in the remaining life of the semiconductor element corresponding to the relative temperature of the semiconductor element, thereby monitoring the remaining life of the semiconductor element.

OKUBO TOMOFUMI (JP)
SUZUKI NORINAGA (JP)
TASHIMA KIYOMI (JP)
TAKANUKI AKIHIRO (JP)

PCT/JP2020/028943

May 06, 2021

July 28, 2020

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HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)

F04B49/10; H02M7/48; H02P29/024; H02P29/68

WO2004082114A1

2004-09-23

JP2013212000A	2013-10-10
JP2006166569A	2006-06-22
JP2016047001A	2016-04-04
JP2018087576A	2018-06-07
JP2018115869A	2018-07-26
JPH09126138A	1997-05-13

See also references of EP 4053410A4

KAICHI IP (JP)

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