Switched Reluctance Machines with Higher Rotor Poles than Stator Poles for Improved Output Torque Characteristics

Piyush C. Desai, Mahesh Krishnamurthy, Nigel Schofield, Ali Emadi

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

7 Citations (Scopus)

Abstract

Switched Reluctance Motor (SRM) drives have gained considerable popularity for automotive, defense and aerospace applications which desire ruggedness, high speed capability, and fault tolerance. In spite of significant progress in the development of advanced control strategies over the past two decades, high levels of torque pulsation and acoustic noise in SRM drives still present a major shortcoming. This paper discusses the improvement of torque characteristics of an SRM by including a higher number of rotor poles than stator poles. A numerical relationship called Pole Design (PD) formula is used to generate new configurations of SRMs. Particularly, this paper focuses on the enhancement of design and development of a SRM, whether operated as a motor, generator, or both, based on this novel formula and investigates such design for low cost manufacturing for high volume applications, torque ripple, torque density, and efficiency. For the verification of the claims presented, a prototype SRM designed using PD formula with 6 stator poles and 10 rotor poles (6/10 configuration) is evaluated and compared to a conventional three-phase 6/4 configuration with similar constraints. Results obtained from simulations using Finite Element Analysis (FEA) and experimental measurements have been presented comparing the output torque for each topology. Comparisons have been made in terms of torque ripple and average torque values for two specific conduction angles.

Original languageEnglish
Title of host publication35th Annual Conference of IEEE Industrial Electronics Society
Subtitle of host publicationIECON 2009
PublisherIEEE
Pages1338-1343
Number of pages6
ISBN (Electronic)9781424446490, 9781424446506
ISBN (Print)9781424446483
DOIs
Publication statusPublished - 17 Feb 2010
Externally publishedYes
Event35th Annual Conference of the IEEE Industrial Electronics Society - Porto, Portugal
Duration: 3 Nov 20095 Nov 2009
Conference number: 35

Publication series

NameAnnual Conference of IEEE Industrial Electronics Society
PublisherIEEE
ISSN (Print)1553-572X
ISSN (Electronic)1553-572X

Conference

Conference35th Annual Conference of the IEEE Industrial Electronics Society
Abbreviated titleIECON 2009
Country/TerritoryPortugal
CityPorto
Period3/11/095/11/09

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