Title: Modified model-compensation ADRC controller and its application in PMSM current loop

Authors: Yingning Gao; Xin Huo; Kemao Ma; Hui Zhao

Addresses: Control and Simulation Center, Harbin Institute of Technology, Harbin 150080, China ' Control and Simulation Center, Harbin Institute of Technology, Harbin 150080, China ' Control and Simulation Center, Harbin Institute of Technology, Harbin 150080, China ' Control and Simulation Center, Harbin Institute of Technology, Harbin 150080, China

Abstract: Active disturbance rejection control (ADRC) is now widely applied in motor drives due to its advantages like independence of system models and better disturbance rejection ability. For the current loop of permanent magnet synchronous motor (PMSM), the uncertainties like model coupling and parameter variation can be estimated and compensated by ADRC. Considering that the total disturbance of current loop can be partially compensated by available plant characteristics, the idea of model compensation can be applied to ADRC controller. However, the filter link in the current feedback loop is usually ignored in the conventional model compensation approach. Therefore, a modified model-compensation ADRC current control strategy is proposed with the filter link effect considered in this paper. Simulation and experimental results show that better current tracking performance is achieved by the proposed control strategy.

Keywords: model-compensation ADRC; total disturbance; extended state observer; filter link; current loop; PMSM; permanent magnet synchronous motor; back-EMF;motor drive control; model uncertainties; model-based controller.

DOI: 10.1504/IJMIC.2020.113716

International Journal of Modelling, Identification and Control, 2020 Vol.35 No.2, pp.140 - 150

Received: 21 Feb 2020
Accepted: 17 May 2020
Published online: 19 Mar 2021 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article