NDLI: Cogging torque minimisation in FSPM machines by right-angle-based tooth chamfering technique

Content Provider	IET Digital Library
Author	Zhu, Xiaofeng Hua, Wei Wu, Zhongze
Abstract	Cogging torque in flux-switching permanent magnet (FSPM) machines dominates the whole torque ripples due to its special doubly salient structure and high air-gap PM flux density. In this study, the chamfering method of right angles is utilised in both stator and rotor sides of FSPM machines to suppress the cogging torque. First, an analytical expression of cogging torque, taking the influence of the introduced right angles into consideration, is derived. On the basis of the derived model, the optimal dimensions of right angles are obtained and verified by both finite element analysis and experiments. Besides, the impacts of the proposed technique on phase electro-motive force and electromagnetic torque are also evaluated. The predicted results indicate that the proposed technique can significantly reduce cogging torque in FSPM machines with negligible reduction of average torque.
Starting Page	627
Ending Page	634
Page Count	8
ISSN	17518660
Volume Number	12
e-ISSN	17518679
Issue Number	Issue 5, May (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/12/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2017.0718
Journal	IET Electric Power Applications
Publisher Date	2018-02-15
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	A.C. Machine Air Gap Analytical Expression Cogging Torque Minimisation Cogging Torque Suppression D.C. Machines Doubly Salient Structure Electric Potential Electromagnetic Torque Finite Element Analysis Flux-switching Permanent Magnet Machine FSPM Machine High Air-gap PM Flux Density Minimisation Permanent Magnet Machine Phase Electromotive Force Right-angle-based Tooth Chamfering Technique Rotor Sides Rotors Stator Sides Stators Torque Torque Ripples
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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