Comparison of a sliding observer and a Kalman filter for direct-torque-controlled IPM synchronous motor drives

Zhuang Xu, M. F. Rahman

Research output: Journal PublicationArticlepeer-review

83 Citations (Scopus)

Abstract

The estimation accuracy of the stator flux and speed using open-loop integrators drops as the mechanical speed reduces in direct-torque-controlled (DTC) interior-permanent-magnet (IPM) synchronous motors. At lower speed, inaccurately estimated stator flux and stator resistance mismatch have significant influence on the steady-state and transient performance of the drive system. The robustness against parameter detuning and signal noises can be improved by deploying closed-loop observers with estimated stator flux and rotor speed. This paper presents a comparison of two stator-flux and speed observers for variable-structure DTC IPM motor drives: an adaptive sliding observer and an extended Kalman filter (EKF). The experimental comparison of the adaptive sliding observer and the EKF regards steady-state and dynamic performance, robustness against parameter uncertainties, stability, and computational complexity. Recommendations for observer selection and the effectiveness of the various schemes are concluded.

Original languageEnglish
Article number6153369
Pages (from-to)4179-4188
Number of pages10
JournalIEEE Transactions on Industrial Electronics
Volume59
Issue number11
DOIs
Publication statusPublished - Nov 2012

Keywords

  • Direct torque controlled (DTC)
  • extended Kalman filter (EKF)
  • interior permanent magnet (IPM)
  • sliding observer

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Comparison of a sliding observer and a Kalman filter for direct-torque-controlled IPM synchronous motor drives'. Together they form a unique fingerprint.

Cite this