Title:
CONTROL DEVICE AND CONTROL METHOD FOR INDUCTION MOTOR
Document Type and Number:
WIPO Patent Application WO/2020/063331
Kind Code:
A1
Abstract:
A control device and a control method for an induction motor. The control device comprises: a magnetizing current adjusting unit used for calculating a magnetizing voltage instruction; a torque current adjusting unit used for calculating a torque voltage instruction; a flux linkage instruction angle generating unit calculating a flux linkage instruction angle according to a lower limit ω1th of a preset stator frequency, a stator frequency ω1, and a flux linkage estimation angle; and a motor stator voltage instruction calculating unit calculating, according to the magnetizing voltage instruction, the torque voltage instruction, and the flux linkage estimation angle, a stator voltage instruction for controlling a stator of the motor. The control system can be run outside an unstable area, and the stability of control by the control device is improved.
Inventors:
WANG YUTAO (CN)
LIU SHAOFENG (CN)
LIU SHAOFENG (CN)
Application Number:
PCT/CN2019/105160
Publication Date:
April 02, 2020
Filing Date:
September 10, 2019
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
OMRON SHANGHAI CO LTD (CN)
OMRON SHANGHAI CO LTD (CN)
International Classes:
H02P21/28
Foreign References:
| CN103427745A | 2013-12-04 | |||
| CN103931098A | 2014-07-16 | |||
| CN1825750A | 2006-08-30 | |||
| JP2010172125A | 2010-08-05 | |||
| JP2010022096A | 2010-01-28 | |||
| JP2010022096A | 2010-01-28 |
Other References:
See also references of EP 3859968A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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