Influence of design parameters on cogging torque in permanent magnet machines
Zi-Qiang Zhu,D. Howe +1 more
- Vol. 15, Iss: 4, pp 407-412
TLDR
In this article, the influence of various design parameters on the cogging torque developed by permanent magnet machines is investigated, and it is shown that the slot and pole number combination has a significant effect on the Cog torque, and influences the optimal value of both skew angle and magnet arc, as well as determining the optimal number of auxiliary teeth/slots.Abstract:
The influence of various design parameters on the cogging torque developed by permanent magnet machines is investigated. It is shown that the slot and pole number combination has a significant effect on the cogging torque, and influences the optimal value of both skew angle and magnet arc, as well as determining the optimal number of auxiliary teeth/slots. A simple factor, which is proportional to the slot number and the pole number and inversely proportional to their smallest common multiple, has been introduced to indicate the "goodness"/spl beta/ of the slot and pole number combination. In general, the higher the "goodness" factor the larger the cogging torque.read more
Citations
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Electrical Machines and Drives for Electric, Hybrid, and Fuel Cell Vehicles
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TL;DR: In this article, the relative merits of induction, switched reluctance, and permanent-magnet (PM) brushless machines and drives for application in electric, hybrid, and fuel cell vehicles are reviewed.
Electrical Machines and Drives for Electric, Hybrid, and Fuel Cell Vehicles Induction and switched-reluctance machines can provide the needed characteristics, but permanent magnet brushless machines offer a higher efficiency and torque density.
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TL;DR: This paper reviews the relative merits of induction, switched reluctance, and permanent-magnet brushesless machines and drives for application in electric, hybrid, and fuel cell vehicles, with particular emphasis on PM brushless machines.
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A Magnetic-Geared Outer-Rotor Permanent-Magnet Brushless Machine for Wind Power Generation
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References
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Journal ArticleDOI
Pulsating torque minimization techniques for permanent magnet AC motor drives-a review
Thomas M. Jahns,Wen L. Soong +1 more
TL;DR: A wide range of motor- and controller-based design techniques that have been described in the literature for minimizing the generation of cogging and ripple torques in both sinusoidal and trapezoidal PMAC motor drives are reviewed.
Journal ArticleDOI
Reduction of cogging torque in permanent magnet motors
Touzhu Li,G. R. Slemon +1 more
TL;DR: In this article, the angular width of the magnet relative to the tooth-plus-slot dimension is chosen to reduce the cogging torque in a permanent magnet motor, which arises from the interaction of the rotor magnets with the steel teeth on the stator.
Journal ArticleDOI
Analytical prediction of the cogging torque in radial-field permanent magnet brushless motors
Zi-Qiang Zhu,D. Howe +1 more
TL;DR: A method for predicting the cogging torque in radial-field permanent magnet brushless motors, based on the analytical calculation of the airgap field distribution and the net lateral force acting on the stator teeth is developed and validated.
Journal ArticleDOI
Torque production in permanent-magnet synchronous motors
J. De La Ree,N. Boules +1 more
TL;DR: In this article, an analytical method was developed to determine cogging as well as commutating torque in permanent magnet machines of both buried and surface-mounted magnet types, and the effect of skewing was considered.
Proceedings ArticleDOI
Prediction of cogging torque using the flux-MMF diagram technique
TL;DR: In this article, an improved approach to predicting cogging torque in permanent magnet motors using the flux-MMF diagram technique is presented and validated, and a brief review of the cog torque calculation and minimization techniques is included.
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