Title:
PREDICTION CONTROL METHOD, APPARATUS AND DEVICE FOR THREE-PHASE PERMANENT MAGNET SYNCHRONOUS ELECTRIC MOTOR, AND MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/060748
Kind Code:
A1
Abstract:
A prediction control method, apparatus and device for a three-phase permanent magnet synchronous electric motor, and a medium. The method comprises: acquiring six effective voltage vectors of a three-phase permanent magnet synchronous electric motor under a two-level voltage source inverter, and selecting, from among the effective voltage vectors, a first screened voltage vector having the minimum cost function value; averagely dividing each effective voltage vector into three equal parts, and performing vector synthesis to obtain 30 virtual voltage vectors; selecting, from among the above 36 voltage vectors, voltage vectors located in the same sector as the first screened voltage vector, and selecting, from among the voltage vectors, a second screened voltage vector having the minimum cost function value; and sequentially constructing virtual voltage vectors by taking the second screened voltage vector as the center and taking the principle of a phase difference interval being 60 degrees, and selecting, from among the virtual voltage vectors, a third screened voltage vector having the minimum cost function value, so as to control the three-phase permanent magnet synchronous electric motor. By means of the method, the operation performance of a three-phase permanent magnet synchronous electric motor can be improved, and the operation burden of a processor can also be reduced.
Inventors:
YANG YONG (CN)
ZHANG WEI (CN)
FAN MINGDI (CN)
XIAO YANG (CN)
XIE MENXI (CN)
HE LIQUN (CN)
DU GUIFU (CN)
CHEN RONG (CN)
ZHANG WEI (CN)
FAN MINGDI (CN)
XIAO YANG (CN)
XIE MENXI (CN)
HE LIQUN (CN)
DU GUIFU (CN)
CHEN RONG (CN)
Application Number:
PCT/CN2021/138253
Publication Date:
April 20, 2023
Filing Date:
December 15, 2021
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
H02P21/14; H02P25/022; H02P27/06
Foreign References:
| CN113206626A | 2021-08-03 | |||
| CN110198130A | 2019-09-03 | |||
| CN108512473A | 2018-09-07 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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