Starting the single-phase switched reluctance motor using rotor shorting rings

J. E. Fletcher, A. Helal, B. W. Williams

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


This article presents a technique that uses rotor shorting rings to start the single-phase switched reluctance (SR) machine, from any rotor position, in a specified direction. It also outlines how the shorting rings enable starting of the machine. Transient finite-element analysis is used to illustrate the torque-producing mechanism from the aligned position using the rotor-mounted shorting rings. It is also used to determine the optimal stator and rotor pole arcs and shorting ring design for a 200-W prototype machine. An SR drive system incorporating rotor shorting rings is evaluated, and experimental results show the effectiveness of the technique. © 2005 IEEE.

Original languageEnglish
Pages (from-to)848-854
Number of pages7
JournalIEEE Transactions on Energy Conversion
Issue number4
Publication statusPublished - Dec 2006


  • Motor starting
  • Reluctance motor
  • Shaded pole
  • Single phase
  • Switched reluctance (SR) machine


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