Title:
CONTROL METHOD FOR CURRENT OF PERMANENT MAGNET SYNCHRONOUS MOTOR ON BASIS OF CONSTRAINED MODEL PREDICTIVE CONTROL
Document Type and Number:
WIPO Patent Application WO/2024/077682
Kind Code:
A1
Abstract:
Provided is a control method (200) for a current of a permanent magnet synchronous motor (150) on the basis of constrained model predictive control. The method comprises: acquiring stator current measurement data of a permanent magnet synchronous motor (150) at a sampling moment (202); generating a current following error signal on the basis of the stator current measurement data and a set stator current value (204); determining whether the current following error signal is in an internal hexagonal area, a first area or a second area of a current plane state partition (206); in response to determining that the area in which the current following error signal is located in the current plane state partition is the first area, mapping the current following error signal to an edge of the first area to obtain an updated current following error signal (208); and generating a current loop control voltage (212). An analytical expression of a predictive control rate at the current control moment is given according to a system state, and the defect of a traditional constrained predictive control algorithm having a large online computing amount is overcome, thereby reducing the requirements for the computing power of chips.
Inventors:
ZHANG JUN (CN)
ZHANG MINGMING (CN)
XIA BINYU (CN)
LI TAO (CN)
ZHANG MINGMING (CN)
XIA BINYU (CN)
LI TAO (CN)
Application Number:
PCT/CN2022/129516
Publication Date:
April 18, 2024
Filing Date:
November 03, 2022
Export Citation:
Assignee:
SPINTROL ELECTRONIC TECH SHANGHAI CO LTD (CN)
International Classes:
H02P21/22
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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