Improved sensorless control method combining SMO and MRAS for surface PMSM drives

  • Danyang Bao
  • , Yi Wang
  • , Xuewei Pan
  • , Xinshuo Wang
  • , Ke Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper proposes a sensorless speed control method combining sliding mode observer (SMO) and model reference adaptive system (MRAS) for the surface permanent magnet synchronous motor drives. This hybrid method can guarantee the convergence of both speed and position estimation simultaneously. In order to eliminate the torque fluctuations and mitigate the influence of harmonic components in the estimated back electromotive force (back-EMF) for SMO, a frequency variable stator current tracker (FVT) based on output regulation is proposed. It can estimate the back-EMF accurately. The improved control method provides high accuracy in estimating the rotor position and speed. Simulation results are provided to further validate the proposed rotor position and speed estimation schemes under different speed. It is worth of mentioning that the improved control method can still maintain high estimation accuracy of rotor speed and position at low speed.

Original languageEnglish
Title of host publication2017 IEEE Industry Applications Society Annual Meeting, IAS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-5
Number of pages5
ISBN (Electronic)9781509048946
DOIs
StatePublished - 8 Nov 2017
Externally publishedYes
Event2017 IEEE Industry Applications Society Annual Meeting, IAS 2017 - Cincinnati, United States
Duration: 1 Oct 20175 Oct 2017

Publication series

Name2017 IEEE Industry Applications Society Annual Meeting, IAS 2017
Volume2017-January

Conference

Conference2017 IEEE Industry Applications Society Annual Meeting, IAS 2017
Country/TerritoryUnited States
CityCincinnati
Period1/10/175/10/17

Keywords

  • Frequency variable error tracker
  • MRAS
  • Output regulation
  • SMO
  • Sensorless speed control

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