Results 21 to 30 of about 180,822 (211)
Reduction of cogging torque in interior-magnet brushless machines [PDF]
IEEE Transactions on Magnetics, 2003 An investigation into the cogging torque in a four-pole interior-magnet brushless machines having either a six-slot stator and a short-pitched nonoverlapping winding or a 12-slot stator and a full-pitched overlapping winding is described. It is shown by finite-element analyses and measurements that, by appropriately defining the pole-arc to pole-pitch ...
Zhu, Z.Q. +3 more
openaire +6 more sources
Energies, 2020 This article presents an effective algorithm to reduce acoustic noise, vibrations and torque ripple caused by cogging torque in three-phase Permanent Magnet (PM) motors under Field Oriented Control (FOC) operation.
Pavol Rafajdus
exaly +3 more sources
Cogging Torque Reduction in Permanent Magnet Machines [PDF]
IEEE Transactions on Industry Applications, 2006 This paper examines two methods - magnet shifting and optimizing the magnet pole arc - for reducing cogging torque in permanent magnet machines. The methods were applied to existing machine designs and their performance was calculated using finite-element analysis (FEA).
Dosiek, L., Pillay, Pragasen
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IET Electric Power ApplicationsAxial Flux‐Switching Permanent Magnet motors are broadly used in various industrial applications due to their high torque density and low rotor inertia.
Hamid Ebrahimi +2 more
doaj +2 more sources
A novel cogging torque measurement method for multi slot/pole permanent magnet motor
IET Electric Power Applications, 2023 The adverse effect on speed ripple and vibration makes it necessary to evaluate the cogging torque. Due to the tolerance of stator and rotor stacks as well as nonuniform magnetization of permanent magnet, the amplitude of cogging torque is unequal in ...
Wanwan Zhu +5 more
doaj +1 more source
Brushless Direct Current Electric Motor Design with Minimum Cogging Torque [PDF]
, 2014 Cogging torque is one of the factors that influence electric motor efficiency. Many methods have been used to reduce the cogging torque. One of the methods is the determination of the number of slots and poles fraction.
Tri Waloyo, Hery; Mechanical Engineering, Post Graduate Program, Sebelas Maret University, Surakarta +2 more
core +3 more sources
Electrical engineering & Electromechanics, 2022 Introduction. In spite of many advantages of radial flux permanent magnet brushless DC motors it suffers from the distinct disadvantage of high cogging torque. The designer must emphasize to reduce the cogging torque during the design stage.
T. H. Panchal, A. N. Patel, R. M. Patel
doaj +1 more source
Optimization of Cogging Torque Based on the Improved Bat Algorithm
International Journal of Information Technologies and Systems Approach, 2023 Permanent magnet motors have the advantages of high output torque, high efficiency, and low noise, but the cogging effect is obvious. The 24-slot 4-pole surface-mounted permanent magnet synchronous motor is taken as an example to reduce the cogging torque of permanent magnet synchronous motors.
Wenbo Bai, Huajun Ran
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A new technique of cogging torque suppression in direct-drive permanent-magnet brushless machines [PDF]
, 2010 In direct-drive electric propulsion systems, where there is no reduction gear to minimize and absorb the adverse effects of cogging torque generated by the permanent-magnet (PM) machine, minimization of cogging torque generation is of particular ...
Luk, Patrick Chi-Kwong +3 more
core +1 more source
Cogging Torque Analysis in Permanent Magnet Machines [PDF]
, 2021 This work analyzes cogging torque in special electrical permanent magnet (PM) machines. Cogging torque is the no load reluctance torque. Cogging torque arises due to the magnetic attraction between the slotted stator and permanent magnet at no load ...
Barman, Dwaipayan
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