Overcurrent Protection and Unmatched Disturbance Rejection under Non-Cascade Structure for PMSM

A non-cascade structure with a simple parameter adjustment method and satisfying dynamic performance is investigated so as to address the problem of the complicated structure of a typical cascade control system of permanent magnet synchronous motor (PMSM) system. However, the current cannot work wit...

Full description

Saved in:
Bibliographic Details
Published in:Energies (Basel) 2022-09, Vol.15 (18), p.6573
Main Authors: Jiang, Changhong, Wang, Qiming, Zhang, Niaona, Ding, Haitao
Format: Article
Language:English
Subjects:
Accuracy
Control algorithms
Control systems
Controllers
Design
Disturbance observers
drive-current constraint
Electric motors
fast non-singular terminal sliding mode
Load
Magnets, Permanent
Mathematical models
Overcurrent
permanent magnet synchronous motor
Permanent magnets
Sliding mode control
sliding-mode disturbance observer
Stability analysis
Strategy
Synchronous motors
Testing
unmatched disturbance
Velocity
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A non-cascade structure with a simple parameter adjustment method and satisfying dynamic performance is investigated so as to address the problem of the complicated structure of a typical cascade control system of permanent magnet synchronous motor (PMSM) system. However, the current cannot work within a limited value under this structure, which poses a risk to circuit safety. To this end, a fast non-singular sliding mode (FNTSM) speed-control strategy is proposed to solve the inadequate resilience of the PI controller. Then, a nonlinear term is developed to address the q-axis current overrun. Furthermore, a sliding-mode disturbance observer (SMDO) is proposed to compensate for the current fluctuation caused by the unmatched load torque disturbances. Finally, stability analysis is conducted for the proposed composite strategy, and the hardware-in-the-loop experiments verify that it achieves satisfying speed-tracking performance and ensures overcurrent protection under unmatched disturbances.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15186573