Title:
MOTOR DRIVE DEVICE, REFRIGERATION CYCLE DEVICE WITH THE SAME, AND MOTOR DRIVE METHOD
Document Type and Number:
Japanese Patent JP2018057085
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor drive device or the like capable of suppressing vibration of a load and reducing a loss of a motor in a compatible manner.SOLUTION: A motor drive device 50 comprises a control unit 51 configured to adjust a fluctuation allowable range of a rotational speed of a motor M that is connected to a compressor 11, based on at least one of the rotational speed of the motor M and a load torque. Thus, the effectiveness of torque control so as to match an output torque of the motor M to the load torque of the compressor 11, or the effectiveness of current constant control for fixing the output torque of the motor M regardless of fluctuation in the load torque can be continuously adjusted in accordance with an operational condition of the motor M.SELECTED DRAWING: Figure 2
Inventors:
NOTOHARA YASUO
TAMURA KENJI
OKUYAMA ATSUSHI
TSUKII KOJI
UEDA KAZUHIRO
RI TOSHO
TAMURA KENJI
OKUYAMA ATSUSHI
TSUKII KOJI
UEDA KAZUHIRO
RI TOSHO
Application Number:
JP2016187541A
Publication Date:
April 05, 2018
Filing Date:
September 26, 2016
Export Citation:
Assignee:
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
International Classes:
H02P6/10; F25B49/02; H02P21/26
Domestic Patent References:
| JP2010187537A | 2010-08-26 | |||
| JP2000041400A | 2000-02-08 | |||
| JP2013038912A | 2013-02-21 |
Foreign References:
| US20110031912A1 | 2011-02-10 |
Attorney, Agent or Firm:
Isono International Patent and Trademark Office