Results 21 to 30 of about 6,360 (226)

An Axial Magnetic Gear With Improved Torque Density and Reduced Cogging Torque

open access: yesIranian 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.
openaire   +2 more sources

The implications of the use of composite materials in electromagnetic device topology and shape optimization [PDF]

open access: yes, 2008
The use of soft magnetic composites (SMCs) provides electromagnetic device designers with serious challenges. While such materials have the potential of allowing novel 3-D topologies to be used, as well as providing major advantages in recycling at the ...
Kim, D.H., Lowther, D.A., Sykulski, J.K.
core   +1 more source

Cogging Torque Mitigation using the Unequal Rotor Slot Arcs Method based on Magnetic Permeance Distribution for Flux-Switching Machines [PDF]

open access: yesJournal of Electromagnetic Engineering and Science
Permanent 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

The use of cement leftovers from the hollow of spun piles as an additive in self-compacting concrete [PDF]

open access: yes, 2018
Spun piles have been used widely by developing countries, including Malaysia, to construct the foundation of most construction projects. A spun pile is a reinforced precast and prestressed concrete that is compacted in a mould through spinning compaction.
Adnan, Suraya Hani   +4 more
core   +1 more source

Comparison of Axial Flux PMSM and Outrunner PMSM under Same Physical and Electrical Parameters according to Cogging Torque

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2018
Axial flux permanent magnet motor (AFPMM) and outrunner permanent magnet motor (ORPMM) are generic rotating machines that are commonly used. Cogging torque is an undesired output for electrical motors.
Ali SAYGIN, Ahmet AKSÖZ
doaj   +1 more source

Fringing in tubular permanent-magnet machines: Part II. Cogging force and its minimization [PDF]

open access: yes, 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.
core   +1 more source

Harmonic Order Analysis of Cogging Torque for Interior Permanent Magnet Synchronous Motor Considering Manufacturing Disturbances

open access: yesEnergies, 2022
This paper is a study of unintended cogging torque for the IPMSM (Internal Permanent Magnet Synchronous Motor) of an EPS (Electric Power Steering) system considering manufacturing disturbances.
Chung-Seong Lee, Hae-Joong Kim
doaj   +1 more source

Permanent-magnet brushless machines with unequal tooth widths and similar slot and pole numbers [PDF]

open access: yes, 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.
core   +1 more source

A Method for Reducing Cogging Torque of Integrated Propulsion Motor

open access: yesJournal 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
doaj   +1 more source

Performance Investigation and Cogging Torque Reduction in a Novel Modular Stator PM Flux Reversal Machine

open access: yesEnergies, 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
doaj   +1 more source

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