Operating induction motor drives with turn-to-turn faults

C. Gerada, K. J. Bradley, M. Sumner, P. Wheeler

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

11 Citations (Scopus)


This paper examines part functionality of a five phase vector controlled induction motor drive following a winding fault. The ability of vector controlled induction-motor drives to continue operating with different numbers of shorted turns in one coil of the stator winding will be examined. A simple thermal model of the coil is used to examine the duration the fault that can be allowed to exist before there is further degradation of the insulation. Simulation results given by a Dynamic Mesh Reluctance Model of the machine incorporate saturation and slotting effects. Shorting small numbers of turns gives very little time before further failures could occur. Shorts of large numbers of turns change machine flux levels, saturation and effective torque constant. By reducing the magnetising current, the short circuit current decreases, the torque developed improves and temperature rise is limited. Part functionality following a winding fault might aid controlled, drive shutdown or provide an idling mode in multi-actuator, aircraft, flight-actuation-systems. This could be particularly helpful with electromechanical actuators.

Original languageEnglish
Title of host publication2005 IEEE International Conference on Electric Machines and Drives
PublisherIEEE Computer Society
Number of pages7
ISBN (Print)0780389875, 9780780389878
Publication statusPublished - 2005
Externally publishedYes
Event2005 IEEE International Conference on Electric Machines and Drives - San Antonio, TX, United States
Duration: 15 May 200515 May 2005

Publication series

Name2005 IEEE International Conference on Electric Machines and Drives


Conference2005 IEEE International Conference on Electric Machines and Drives
Country/TerritoryUnited States
CitySan Antonio, TX


  • Fault tollerance
  • Five-phase induction motor
  • Machine faults
  • Vector control

ASJC Scopus subject areas

  • General Engineering


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