Title:
MODEL PREDICTIVE CURRENT CONTROL METHOD FOR TWO-MOTOR TORQUE SYNCHRONIZATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/088440
Kind Code:
A1
Abstract:
The present invention relates to the field of power electronics and motor control. Disclosed is a model predictive current control method for a two-motor torque synchronization system. The invention takes an indirect matrix converter and a two-motor system which are coaxially and rigidly connected as a target, and takes two-motor torque synchronization performance and current tracking performance as main control targets. A two-motor unified prediction model is established and a value function is configured based on free components of error terms so as to solve the problems in which when model predictive current control is performed on a two-motor system, setting of a value function weighting coefficient needs to be performed manually, and consequently the setting process is complicated and an erroneous switch state combination is likely to be selected. The invention proposes an adaptive weighting coefficient setting policy capable of automatically matching an operating state of a system, thereby effectively reducing workload and complexity of designing a system. The method of the present invention can effectively suppress torque synchronization errors of two motors, and ensures good torque synchronization performance and current tracking performance of a system. Without being limited to a two-motor system, the present invention is also applicable to a multi-motor system.
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Inventors:
YAN YAN (CN)
LI SHUJING (CN)
ZHANG ZHEN (CN)
YU DONG (CN)
SHI TINGNA (CN)
SONG PENG (CN)
LI SHUJING (CN)
ZHANG ZHEN (CN)
YU DONG (CN)
SHI TINGNA (CN)
SONG PENG (CN)
Application Number:
PCT/CN2020/137835
Publication Date:
May 05, 2022
Filing Date:
December 20, 2020
Export Citation:
Assignee:
UNIV ZHEJIANG (CN)
International Classes:
H02P6/04; H02P6/34; H02P21/14; H02P21/22
Foreign References:
| CN109495050A | 2019-03-19 | |||
| CN103762926A | 2014-04-30 | |||
| CN107276475A | 2017-10-20 | |||
| DE102016211473A1 | 2017-12-28 | |||
| US20150311845A1 | 2015-10-29 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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