New pole tip shapes mitigating torque ripple in short pitched and fully pitched switched reluctance motors |
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| Affiliation: | 1. Istanbul University, Vocational School of High Tech., Istanbul 34850, Turkey;2. Department of Electrical Engineering, Yildiz Technical University, Istanbul 80750, Turkey;3. Advanced Energy Conversion, LLC, Malta, NY 12020, USA;1. Department of Electrical and Computer Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran;2. Electrical Engineering Department, College of Engineering, Payame Noor University, Isfahan 81395-671, Iran;1. Laboratoire de Génie Electrique de Paris (LGEP)/SPEE-Labs, CNRS UMR 8507, SUPELEC, Université Pierre et Marie Curie P6, Université Paris-Sud, 11 rue Joliot Curie, Plateau de Moulon, F 91192 Gif sur Yvette CEDEX, France;2. FEMTO-ST, CNRS UMR 6174, University of Franche-Comte, F-90010 Belfort, France;3. Universitat Politecnica de Catalunya, Colom 1, 08222 Terrassa, Catalonia, Spain;1. Texas Tech University, Whitacre College of Engineering, Department of Mechanical Engineering, Boston Avenue # 7, Lubbock, TX 79409, United States;2. CNRS, LSS-SUPELEC, 3 Rue Joliot Curie, Gif sur Yvette, France;3. UNAM, Faculty of Engineering, A.P. 70-256, 04510, Mexico D.F., Mexico |
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| Abstract: | High torque ripple is one of the major disadvantages of switched reluctance motor (SRM). Although there are several publications in the literature addressing the full or partial solution to the problem for conventional SRM, no publication exists for the torque ripple reduction of recently emerging fully pitched SRM. This paper deals with finding best dimension set for a particular stator and rotor pole tip shape aiming to reduce torque ripple in both short pitched and fully pitched SRMs. Five new stator and rotor pole tip structures have been investigated and compared with conventional pole tip. Analyses have been performed with the finite element (FE) models of 6/43-phase short pitched and fully pitched SRM with unipolar excitation. With the proposed pole tips, torque ripple is reduced by 24.1% in short pitched SRM for 10 A phase current and by 22.6% in fully pitched SRM for 5.59 A phase current. |
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