Results 171 to 180 of about 3,446,014 (205)

Boundary element method in reduction of cogging torque

IEEE Transactions on Magnetics, 1998
A method to optimize the cogging torque of a brushless motor with parallel magnetized magnets is presented. The technique is based on the boundary element method. The optimal width of the magnet and the optimal shifts of the consecutive magnets are computed.
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Cogging torque reduction of a permanent magnet canned motor

2016 IEEE 11th Conference on Industrial Electronics and Applications (ICIEA), 2016
The method of adding auxiliary slots in the stator or rotor is presented to reduce the cogging torque of a permanent magnet (PM) canned motor. Based on the formula of cogging torque, the optimal number of auxiliary slots is derived. A 3D finite element (FE) method is used to analyze the effect of different shapes of auxiliary slots on the cogging ...
Youyuan Ni, Qiang He
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Reduction of Cogging Torque by Notching Groove on Magnets in SMPMSM

2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 2019
Surface mount permanent magnet synchronous motor (SMPMSM) is widely used in industrial fields. In order to improve its working accuracy, the cogging torque needs to be reduced. This paper studies the effect of notching groove on magnets on cogging torque in SMPMSM.
Tao Hong, Xiaohua Bao, Wei Xu, Jinlong Fang, Yixiang Xu   +4 more
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Cogging torque reduction with pole slot combination and notch

2014 International Conference on Electrical Engineering and Computer Science (ICEECS), 2014
In this paper, we examine the basic method of reducing cogging torque by using the combination of slot and pole number with a simple software. The methods were applied to basic permanent machine designs and the performance was calculated using finite-element analysis (FEA).
F. Yusivar, H. S. V. Roy, R. Gunawan, A. Halim   +3 more
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Study on the Noise Reduction of BLDC Fan Motor by Cogging Torque Reduction

The Transactions of The Korean Institute of Electrical Engineers, 2013
It is very important to diminish noise source of electric motor systems that are used for home appliance area. We have studied on the noise reduction of BLDC motor, mainly focusing on reducing noise source from cogging torque. This noise source causes resonance of fan & motor systems.
Hyoun-Jeong Shin, En-Sang Lee
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Permanent Magnet Synchronous Motor Magnet Designs with Skewing for Torque Ripple and Cogging Torque Reduction

2007 IEEE Industry Applications Annual Meeting, 2007
This paper examines the torque ripple and cogging torque variation in surface mounted permanent magnet synchronous motors with skewed rotor. The effect of slot/pole combinations and magnet shapes on the magnitude and harmonic content of torque waveforms in a PMSM drive has been studied.
Rakib Islam, Iqbal Husain, Abbas Fardoun, Kevin McLaughlin   +3 more
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Reduction of Cogging Torque and Torque Ripple in Modulated Pole Machines by Geometrical Changes

7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014), 2014
In recent years significant improvements in the field of Modulated Pole Machines (MPMs) have been achieved, especially in electric vehicles applications. MPMs such as Transverse Flux Machines (TFMs) are known for producing high torque densities; though further research and improvements are needed to reduce the inherently high cogging torque and torque ...
N. Ahmed, J. Washington, N.J. Baker, G.J. Atkinson   +3 more
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Noise and cogging torque reduction in brushless DC ceiling fan

2015 18th International Conference on Electrical Machines and Systems (ICEMS), 2015
This paper presents the improvements in the design of a three phase BLDC motor for noise reduction. The end application of BLDC motor is a ceiling fan. Acoustic noise spectrum of the motor is captured and analyzed. It is shown that, the cogging torque is the dominant cause of the acoustic noise.
Anchal Saxena, B.G. Fernandes
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Cogging torque reduction in a novel axial flux PM motor

International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006., 2006
This article shows the reduction of cogging torque in a novel axial flux permanent magnet (AFPM) motor through the various design schemes. 3D finite element method is used for the exact magnetic field analysis. The effects of slot shapes and skewing of slot on the cogging torque and average torque have been investigated in detail.
null Yon-Do Chun, null Dae-Hyun Koo, null Yun-Hyun Cho, null Won-Young Cho   +3 more
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Study on cogging torque reduction methods of PM stepping motor

2004 International Conference on Power System Technology, 2004. PowerCon 2004., 2005
Cogging torque is the main factor that causes a PM stepping motor to be shaken, noisy and even influences its safe operation. After introducing the structure of PM stepping motor, this paper analyzes the effect of the power supply mode on the electromagnetic torque, and the measures to reduce cogging torque of PM stepping motor.
null Fengge Zhang, null Ningze Tong, null Fengxiang Wang   +2 more
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