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Sensorless control of high speed permanent magnet synchronous motor based on modified sliding-mode observer

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

Abstract

In sensorless vector control of permanent magnet synchronous motor, it is necessary to achieve an accurate estimate of the motor speed and position of the rotor. Traditional sliding mode observer algorithm has the inherent chattering problem which reduces accuracy. The Sigmoid function was used to replace the sign function in the traditional sliding mode observer as the switching control function to cancel the filter and phase compensation links. A new sliding mode observer was designed and its stability was proved. High-speed permanent magnet synchronous motor simulation and experimental results show: the new modified sliding mode observer based on Sigmoid function can eliminate the severe buffeting of the traditional sliding mode observer, achieve the accurate estimation of the rotor speed and position for high-speed permanent magnet synchronous motor to complete a wide range of speed control; the correctness and feasibility of the sensorless control strategy based on this method is verified.

Original languageEnglish
Title of host publicationEnergy Research and Power Engineering 2014
PublisherTrans Tech Publications Ltd
Pages1134-1137
Number of pages4
ISBN (Print)9783038351603
DOIs
StatePublished - 2014
Event2014 International Conference on Energy Research and Power Engineering, ERPE 2014 - Dalian, China
Duration: 17 May 201418 May 2014

Publication series

NameAdvanced Materials Research
Volume986-987
ISSN (Print)1022-6680
ISSN (Electronic)1662-8985

Conference

Conference2014 International Conference on Energy Research and Power Engineering, ERPE 2014
Country/TerritoryChina
CityDalian
Period17/05/1418/05/14

Keywords

  • Permanent magnet synchronous motor
  • Sigmoid function
  • Sliding mode observer
  • Vector control

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