A nonlinear extended state observer for sensorless IPMSM drives with optimized gains

Tianru Zhang, Zhuang Xu, Chris Gerada

Research output: Journal PublicationArticlepeer-review

6 Citations (Scopus)

Abstract

A nonlinear third-order extended state observer (TESO) is proposed for the rotor position and speed estimation for sensorless interior permanent magnet synchronous motor drives. The disturbance observation bandwidth of the proposed observer is expanded by deploying a gain optimization method. The measurement noise excited in the control loop is suppressed effectively by substituting the previous high gain configuration. Experimentally, both the steady-state and transient performance of the TESO are verified on testing rigs. In comparison with the performance of a conventional linear extended state observer, the TESO has a better capability of disturbance observation and noise suppression in a wide operating range.

Original languageEnglish
Article number8932537
Pages (from-to)1485-1494
Number of pages10
JournalIEEE Transactions on Industry Applications
Volume56
Issue number2
DOIs
Publication statusPublished - 1 Mar 2020

Keywords

  • Bandwidth expansion
  • extended state observer (ESO)
  • gain optimization
  • noise suppression
  • sensorless interior permanent magnet synchronous motor (IPMSM) drives

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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