Linear analysis of two-, three- and four-phase switched reluctance machines with variable pitched winding configurations

W.A.M. Ghoneim, J.E. Fletcher, B.W. Williams

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The results from a generalised linear analysis of switched reluctance machines with various winding and phase configurations are presented. The generalised analysis is used to analyse ten 4/2, 6/4, and 8/6 pole machines with various stator coil pitches and excitation patterns. Twenty-six combinations are analysed with a fixed frame size. The optimum stator and rotor pole arc combinations for maximum torque per unit current production are determined. An iterative procedure is then used to determine the optimum rotor diameter, given the frame size, permissible total copper loss and flux density. The restrictions on copper loss and flux density provide a reasonable comparison between the average torque developed by each machine. The technique is linear, therefore it does not incorporate saturation and pole flux fringing effects. The analysis highlights that the optimised machine geometry is a function of the current excitation pattern and coil pitch employed.
LanguageEnglish
Pages319-343
Number of pages24
JournalIEE Proceedings Electric Power Applications
Volume160
Issue number3
DOIs
Publication statusPublished - May 2003

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Poles
Fluxes
Stators
Torque
Rotors
Copper
Geometry

Keywords

  • machine theory
  • magnetic flux
  • reluctance motors
  • rotors
  • stators
  • power engineering

Cite this

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abstract = "The results from a generalised linear analysis of switched reluctance machines with various winding and phase configurations are presented. The generalised analysis is used to analyse ten 4/2, 6/4, and 8/6 pole machines with various stator coil pitches and excitation patterns. Twenty-six combinations are analysed with a fixed frame size. The optimum stator and rotor pole arc combinations for maximum torque per unit current production are determined. An iterative procedure is then used to determine the optimum rotor diameter, given the frame size, permissible total copper loss and flux density. The restrictions on copper loss and flux density provide a reasonable comparison between the average torque developed by each machine. The technique is linear, therefore it does not incorporate saturation and pole flux fringing effects. The analysis highlights that the optimised machine geometry is a function of the current excitation pattern and coil pitch employed.",
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Linear analysis of two-, three- and four-phase switched reluctance machines with variable pitched winding configurations. / Ghoneim, W.A.M.; Fletcher, J.E.; Williams, B.W.

In: IEE Proceedings Electric Power Applications, Vol. 160, No. 3, 05.2003, p. 319-343.

Research output: Contribution to journalArticle

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AB - The results from a generalised linear analysis of switched reluctance machines with various winding and phase configurations are presented. The generalised analysis is used to analyse ten 4/2, 6/4, and 8/6 pole machines with various stator coil pitches and excitation patterns. Twenty-six combinations are analysed with a fixed frame size. The optimum stator and rotor pole arc combinations for maximum torque per unit current production are determined. An iterative procedure is then used to determine the optimum rotor diameter, given the frame size, permissible total copper loss and flux density. The restrictions on copper loss and flux density provide a reasonable comparison between the average torque developed by each machine. The technique is linear, therefore it does not incorporate saturation and pole flux fringing effects. The analysis highlights that the optimised machine geometry is a function of the current excitation pattern and coil pitch employed.

KW - machine theory

KW - magnetic flux

KW - reluctance motors

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