MOTOR DRIVE DEVICE, REFRIGERATION CYCLE DEVICE EQUIPPED WITH SAME, AND MOTOR DRIVE METHOD - HITACHI JOHNSON CONTROLS AIR CONDITIONING INC

Title:

MOTOR DRIVE DEVICE, REFRIGERATION CYCLE DEVICE EQUIPPED WITH SAME, AND MOTOR DRIVE METHOD

Document Type and Number:

WIPO Patent Application WO/2019/073599

Kind Code:

A1

Abstract:

Provided are a motor drive device and the like capable of both suppressing vibration and reducing loss. The motor drive device (50) is provided with a control unit (51) for changing, in accordance with the change in torque current on the q-axis of a rotating coordinate system of a motor (M), excitation current on the d-axis. By changing the excitation current in accordance with the change in the torque current like this, it is possible to suppress the vibration and noise of the motor (M) and the like and drastically reduce the loss of the motor (M) and the like in comparison with a conventional loss even if periodical variation of a load torque occurs during driving of the motor (M).

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JPS6043085	INVERTER DEVICE
WO/2018/043502	INVERTER CONTROL DEVICE AND ELECTRIC MOTOR DRIVING SYSTEM

Inventors:

NOTOHARA YASUO (JP)
SUMITA SATOSHI (JP)
OKUYAMA ATSUSHI (JP)
TAMURA KENJI (JP)
TSUKII KOJI (JP)
UETA KAZUHIRO (JP)

Application Number:

PCT/JP2017/037212

Publication Date:

April 18, 2019

Filing Date:

October 13, 2017

Export Citation:

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Assignee:

HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)

International Classes:

H02P21/05

Domestic Patent References:

WO2015129042A1

2015-09-03

Foreign References:

JP2012016276A	2012-01-19
JP2010057217A	2010-03-11
JP2000278982A	2000-10-06
JP2016082637A	2016-05-16
JP2007259686A	2007-10-04