Stable and Robust Design of Active Disturbance-Rejection Current Controller for Permanent Magnet Machines in Transportation Systems

Ahmed M. Diab, Serhiy Bozhko, Michael Galea, Christopher Gerada

Research output: Journal PublicationArticlepeer-review

13 Citations (Scopus)
3 Downloads (Pure)

Abstract

Active disturbance-rejection control (ADRC) as a current control (CC) method for ac drive systems has been recently shown to have significant strengths. Its robustness to system uncertainties and its high disturbance-rejection capability render it an attractive control scheme for various mobile applications. Until now, however, all the known tuning methods available in literature are based on a number of assumptions that may lead to the degraded drive performance and even to the loss of stability. This article, thus, provides a rigorous analysis and proposes a new CC design method based on the ADRC technique. The design derives a generic closed-loop transfer function considering system delays and the dynamics of the extended state observer. Based on this analysis, a tuning method able to guarantee a set performance to avoid unstable operation is thus proposed. The effects of model uncertainties on the current loop system stability and robustness are also analyzed and reported. A tuning criterion to enhance system robustness and to improve its dynamic performance is developed and validated experimentally on a case study system.

Original languageEnglish
Article number9112262
Pages (from-to)1421-1433
Number of pages13
JournalIEEE Transactions on Transportation Electrification
Volume6
Issue number4
DOIs
Publication statusPublished - Dec 2020

Keywords

  • Active disturbance-rejection control (ADRC)
  • current control (CC)
  • variable drive system

ASJC Scopus subject areas

  • Automotive Engineering
  • Transportation
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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