Title:
CONTROL APPARATUS AND CONTROL METHOD FOR ALTERNATING-CURRENT ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2020/063330
Kind Code:
A1
Abstract:
A control apparatus (10) and a control method for an alternating-current electric motor. Provided is the control apparatus (10) for an alternating-current electric motor, wherein same is used for drive control of an alternating-current electric motor. The control apparatus comprises: a rotor flux linkage observation unit (101) for calculating a phase angle θ of a rotor flux linkage of an alternating-current electric motor; a current adjustment amount calculation unit (102) for calculating a d-axis current adjustment value iadjust according to a rotational speed ω1 of the alternating-current electric motor obtained on the basis of the phase angle θ of the rotor flux linkage; and a drive unit (103) for adjusting a d-axis current command value id according to the d-axis current adjustment value iadjust to obtain an adjusted d-axis current command value i'd, and driving the alternating-current electric motor according to the adjusted d-axis current command value i'd and a q-axis current command value iq. The method can enable a control system to operate outside an unstable region, thereby improving the stability of control performed by the control apparatus.
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Inventors:
GUO XIANJIE (CN)
WANG YUTAO (CN)
WANG YUTAO (CN)
Application Number:
PCT/CN2019/105157
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:
H02P21/14
Foreign References:
| CN102386834A | 2012-03-21 | |||
| CN102386834A | 2012-03-21 | |||
| CN102868348A | 2013-01-09 | |||
| CN102386816A | 2012-03-21 | |||
| CN102386816A | 2012-03-21 | |||
| CN104201960A | 2014-12-10 | |||
| CN104201960A | 2014-12-10 | |||
| US6046554A | 2000-04-04 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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