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Cogging torque reduction methods
2014 Electric Power Quality and Supply Reliability Conference (PQ), 2014This paper considers the study of methods for reduction of the cogging torque in permanent magnet machines. Cogging torque has been analyzed to be reduced by slot skewing, width of slot opening, magnet pole radius and also by mounting of the magnets.
Oleg Kudrjavtsev, Aleksander Kilk
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A reduction method of cogging torque for IPMSM
2005 International Conference on Electrical Machines and Systems, 2005This paper describes a reduction technique of the cogging torque in an interior permanent magnet synchronous motor (IPMSM). IPMSM usually has the flux barrier for preventing the short circuit of magnetic flux near the magnet. The flux barrier can reduce the cogging torque, and therefore the shape of the flux barrier of IPMSM with concentrated winding ...
Y. Kawaguchi +3 more
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Reduction of cogging torque in permanent magnet motors
IEEE Transactions on Magnetics, 1988Cogging torque in a permanent magnet motor, which arises from the interaction of the rotor magnets with the steel teeth on the stator, can be reduced by skewing the stator teeth, but only at the expense of added complexity in stator construction and some loss of output torque.
null Touzhu Li, G. Slemon
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Simulation Study Of The Reduction Of Cogging Torque In Permanent Magnet Motors
1997 IEEE International Magnetics Conference (INTERMAG'97), 1997The reduction of cogging torque in permanent magnet motors has been studied by varying the geometry shape of the saliencies of the armature core on stator of a 12-pole 9-tooth spindle motor. Mechanism of this reduction is explained by the minimum net integral of the product of normal and tangential magnetic flux with respect to the mechanical angle ...
Y.D. Yao +6 more
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Cogging Torque Reduction of a Single-Phase Brushless DC Motor
7th Joint MMM-Intermag Conference. Abstracts (Cat. No.98CH36275), 1998In this research, the cogging torque of a newly designed single-phase brushless DC motor used in CD-ROM application is investigated. A finite element method is employed to numerically analyze the magnetic field distribution inside the motor, in which a three-dimensional mesh is constructed.
null Der-Ray Huang +6 more
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Cogging Torque Reduction by Slot-Opening Shift for Permanent Magnet Machines
IEEE Transactions on Magnetics, 2013 In this paper, an effective cogging torque reduction method based on shifting the slot-openings is presented. Stator teeth are divided into groups and proper slot-opening shift is applied for each group.
Jian Gao, Huang Shoudao, Kaiyuan Lu
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Cogging Torque Reduction in a Permanent Magnet Wind Turbine Generator
ASME 2002 Wind Energy Symposium, 2002Most small wind turbines use permanent magnet (PM) generators. The generators are usually direct-drive (i.e., no gearbox is required). Direct-drive PM generators are characterized by low maintenance and high efficiency. Small wind turbines are usually self-starting and require very simple controls.
E. Muljadi, J. Green
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A study of cogging torque reduction methods in brushless dc motor
2012 9th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2012The cogging torque is undesirable effect in the brushless dc (BLDC) motor, causing vibration and audible noises. It arises from the rotor permanent magnet interacting with the steel teeth on the stator. This paper studies the various reduction methods of cogging torque when designing a BLDC motor.
Teeradej Srisiriwanna, Mongkol Konghirun
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Cogging torque and torque ripple reduction of modular permanent magnet machines
2016 XXII International Conference on Electrical Machines (ICEM), 2016In order to minimize the cogging torque and torque ripple for surface mounted permanent magnet (SPM) machines, this paper proposes a C-core modular stator which can be obtained by inserting flux gaps (FGs) into every stator tooth. The electromagnetic performances of C-core modular PM machines such as open-circuit flux linkage, phase back-EMF, cogging ...
G. J. Li, B. Ren, Z. Q. Zhu
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Permanent magnet shaping for cogging torque and torque ripple reduction of PMSM
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2018Purpose This paper aims to the improvement of permanent magnet shape in the popular permanent magnet synchronous machine (PMSM) is proposed in this paper in view to mitigate cogging torque magnitude and torque ripple. Design/methodology/approach A two-dimensional exact analytical approach of magnetic field distribution is established for the PMSM ...
Brahim Ladghem Chikouche +2 more
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