Results 11 to 20 of about 6,360 (226)
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
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Cogging Torque Mitigation of Modular Permanent Magnet Machines [PDF]
IEEE Transactions on Magnetics, 2016 This paper proposes a novel cogging torque mitigation method for modular permanent magnet (PM) machines with flux gaps in alternate stator teeth. The slot openings of the modular PM machines are divided into two groups in a special way. By shifting the slot openings of two groups in opposite directions with the same angle, the machine cogging torque ...
Li, G. +4 more
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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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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
Comparison of three analytical methods for the precise calculation of cogging torque and torque ripple in axial flux PM machines [PDF]
, 2016 A comparison between different analytical and finite-element (FE) tools for the computation of cogging torque and torque ripple in axial flux permanent-magnet synchronous machines is made.
Hannon, Bert +3 more
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Energies, 2021 Cogging torque is a critical dilemma in Permanent Magnet Brushless DC (PMBLDC) motors. In medium-low power PMBLDC motors, redundant vibrations and forbidding noises arise as a result of the harmonic magnetic forces created by cogging torque.
T. A. Anuja, M. Arun Noyal Doss
doaj +1 more source
Comprehensive analysis and evaluation of cogging torque in Axial Flux Permanent Magnet machines [PDF]
, 2015 Evaluation and minimization of cogging torque in Axial Flux Permanent Magnet (AFPM) machines become essential specially in direct drives for low speed applications.
Costa, A.F. +2 more
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Cogging torque minimization in transverse flux machines
2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016 This paper presents the design considerations in cogging torque minimization in two types of transverse flux machines. The machines have a double stator-single rotor configuration with flux concentrating ferrite magnets. One of the machines has pole windings across each leg of an E-Core stator. Another machine has quasi-U-shaped stator cores and a ring
Tausif Husain +4 more
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Assessment of torque components in brushless permanent-magnet machines through numerical analysis of the electromagnetic field [PDF]
, 2005 For the calculation of torque in brushless (BL) alternating current motors a local method is proposed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air gap.
Dellinger, S.J. +4 more
core +1 more source
Comparison of Halbach magnetized brushless machines based on discrete magnet segments or a single ring magnet [PDF]
, 2002 This paper compares the air-gap field distribution, cogging torque, back-electromotive-force waveform, and efficiency of brushless machines having a Halbach magnetization produced by either discrete magnet segments or a single ring magnet.
Howe, D., Xia, Z.P., Zhu, Z.Q.
core +1 more source