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
Energies, 2022 This paper suggests a method to improve the performances of the Dual Stator Axial Flux Spoke-type Permanent Magnet (DSAFSPM) machines with phase group concentrated coil (PGCC) windings, by incorporating continuous and discrete step-skewing along with a ...
Muhammad Ramiz Zakir +5 more
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
core +3 more sources
Employability skills for hospitality students in Malaysia [PDF]
, 2017 Malaysia needs high skilled workforce to support growth of the industry. With dynamically changing job market and progressive technological change, employees are expected to keep abreast of global economics.
Ahmad, Nor Aziah +2 more
core +1 more source
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.
core +1 more source
Analysis and Optimization of Axial Flux Permanent Magnet Machine for Cogging Torque Reduction
Mathematics, 2021 In this paper, a hexagonal magnet shape is proposed to have an arc profile capable of reducing torque ripples resulting from cogging torque in a single-sided axial flux permanent magnet (AFPM) machine.
Hina Usman +5 more
doaj +1 more source
Torque-ripple minimization in modular permanent-magnet brushless machines [PDF]
, 2003 This paper discusses the suitability of four-phase, five-phase, and six-phase modular machines, for use in applications where servo characteristics and fault tolerance are key requirements.
Atallah, K., Howe, D., Wang, J.B.
core +1 more source
Three-dimensional soft material micropatterning via grayscale photolithography for improved hydrophobicity of Polydimethylsiloxane (PDMS) [PDF]
, 2022 : In this present work, we aim to improve the hydrophobicity of a polydimethylsiloxane (PDMS) surface. Various heights of 3D PDMS micropillars were fabricated via grayscale photolithog raphy, and improved wettability was investigated.
Abd Manaf, Asrulnizam +6 more
core +1 more source
Reduction of Cogging Torque and EMF Harmonics in Modulated Pole Machines [PDF]
IEEE Transactions on Energy Conversion, 2014 This paper discusses a method for reducing cogging torque and harmonic content of back-electromotive force (EMF) waveforms in modulated pole machines (MPMs). Tooth pitching is applied to a separate phase MPM in order to reduce the most prominent harmonics present in a three-phase MPM's cogging torque.
Washington JG, Atkinson GJ, Baker NJ
openaire +2 more sources
Techniques for Reduction of the Cogging Torque in Claw Pole Machines with SMC Cores
Energies, 2017 As one of the main parasitic parameters in permanent magnet (PM) synchronous machines (PMSMs), cogging torque is the main component of the torque ripple, which has always been the handicap in the high-performance, low-speed drive systems.
Chengcheng Liu +5 more
doaj +1 more source