Prediction of the electromagnetic torque in synchronous machines through Maxwell stress harmonic filter (HFT) method [PDF]
, 2006 For the calculation of torque in synchronous motors a local method is analysed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air-gap.
Popescu, M.
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An Axial Magnetic Gear With Improved Torque Density and Reduced Cogging Torque
Iranian Journal of Electrical and Electronic Engineering, 2021 A new axial magnetic gear (AMG) with enhanced torque density and reduced cogging torque is proposed in this paper. In the new structure, the direction and width of permanent magnets in high-speed rotor are changed and permanent magnets are removed from the modulator while the low-speed rotor remains unchanged.
Sepaseh, J., Rostami, N., Feyzi, M. R.
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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
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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.
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Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching Machines [PDF]
Journal of Electromagnetic Engineering and SciencePermanent magnet machines, such as flux-switching permanent magnet (FSPM) machines, are characterized by cogging torque, which must be addressed because it leads to torque fluctuations.
Emrah Cetin
doaj +1 more source
Energies, 2022 In this research paper, various performances of five different rotor pole topologies of the proposed novel modular stator (MS) permanent magnet (PM) flux reversal machine were investigated.
Surat Khan +6 more
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Fringing in tubular permanent-magnet machines: Part II. Cogging force and its minimization [PDF]
, 2003 In Part I of the paper, analytical field solutions, which account for the fringing flux associated with the finite length of the ferromagnetic armature core in tubular permanent-magnet machines, are established.
Howe, D., Jewell, G.W., Wang, J.B.
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Permanent-magnet brushless machines with unequal tooth widths and similar slot and pole numbers [PDF]
, 2005 This paper presents a comparative study of three-phase permanent-magnet brushless machines in which the slot and pole numbers are similar, with reference to conventional brushless dc machines in which the ratio of the slot number to pole number is ...
Howe, D., Ishak, D., Zhu, Z.Q.
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A Method for Reducing Cogging Torque of Integrated Propulsion Motor
Journal of Marine Science and Engineering, 2019 How to reduce the cogging torque of the integrated propeller motor is an important means to improve its noise performance because cogging torque is one of the key factors causing torque ripple.
Huanyu Ou +3 more
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Influence of design parameters on cogging torque in permanent magnet machines [PDF]
, 2000 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 ...
Howe, D., Zhu, Z.Q.
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