Sensorless speed and position control of synchronous machines using alternating carrier injection

M. Linke, R. Kennel, J. Holtz

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

251 Scopus citations

Abstract

High frequency carrier injection is a promising approach solving high performance sensorless drive demands. Position control at low and zero speed is only possible using anisotropic effects considered in high-frequency models. The usually open loop carrier signal injection is impacted by nonlinear inverter properties like the dead-time effect. This paper discusses the influence of the dead time effect on the carrier signal excitation comparing alternating and revolving injection principles. To overcome disturbing effects an alternating injection procedure is proposed using a predefined injection angle. The approach reduces the effects of the inverter distortion voltages. As a result it is possible to track even small saliencies typical for surface mounted permanent magnet synchronous machines. For processing the high frequency current for position estimation, there is no additional hardware necessary within a standard drives with field oriented control. The paper presents theoretical analysis and experimental results.

Original languageEnglish
Title of host publicationIEMDC 2003 - IEEE International Electric Machines and Drives Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1211-1217
Number of pages7
ISBN (Electronic)0780378172, 9780780378179
DOIs
StatePublished - 2003
Externally publishedYes
EventIEEE International Electric Machines and Drives Conference, IEMDC 2003 - Madison, United States
Duration: 1 Jun 20034 Jun 2003

Publication series

NameIEMDC 2003 - IEEE International Electric Machines and Drives Conference
Volume2

Conference

ConferenceIEEE International Electric Machines and Drives Conference, IEMDC 2003
Country/TerritoryUnited States
CityMadison
Period1/06/034/06/03

Keywords

  • Anisotropic magnetoresistance
  • Frequency estimation
  • Hardware
  • Inverters
  • Magnetic analysis
  • Nonlinear distortion
  • Permanent magnet machines
  • Position control
  • Synchronous machines
  • Voltage

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