A comparison of 2D and 3D analysis methods for the prediction of cogging torque in an electrical machine having skewed slots

Lowther, D.A.; Forghani, B.; Deshpande, U.

doi:10.1108/03321640110383906

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…High cogging torque always results in torque ripple, and thus decreases the stability of the motor [14], [15], [16]. Cogging torque is related to many motor parameters.…”

Section: B Reduction Of Cogging Torquementioning

confidence: 99%

Design and Analysis of a Bearingless Permanent-Magnet Motor for Axial Blood Pump Applications

et al. 2020

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Because of their high power density and compact size, permanent-magnet (PM) motors have been commonly used to drive rotary blood pumps (RBPs), which are focused on the treatment of end-stage heart failure or as the bridge to a heart transplant. In this paper, a bearingless PM motor has been proposed for axial blood pump applications. The finite-element method (FEM) is used to predict the electromagnetic characteristics of the designed motor with improved performance. Two topologies are investigated, namely the integral-slot and distributed-windings method and the fractional-slot and double-layer concentrated windings method. Both motors are analyzed and optimized. FEM reveals that, compared with the integralslot motor, the fractional-slot motor offers significantly enhanced performance, including reduced cogging torque, improved back electromotive force (back EMF), and decreased magnetic flux leakage. Finally, hydraulic experiments have been conducted in a mock-circulation loop to validate the feasibility of the designed motor for an axial blood pump. The results show that the fractional-slot bearingless PM motor can drive the RBP to produce physiological blood flow with reasonable efficiency.

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“…High cogging torque always results in torque ripple, and thus decreases the stability of the motor [14], [15], [16]. Cogging torque is related to many motor parameters.…”

Section: B Reduction Of Cogging Torquementioning

confidence: 99%

Design and Analysis of a Bearingless Permanent-Magnet Motor for Axial Blood Pump Applications

et al. 2020

View full text Add to dashboard Cite

show abstract

“…More detail simulation can be done using 3D simulation. A disadvantage of 3D simulation is time consuming and simulation tools used are very complex [11,12].…”

Section: Introductionmentioning

confidence: 99%

Brushless Direct Current Electric Motor Design with Minimum Cogging Torque

Nizam¹,

Waloyo²,

Inayati³

2014

EECSI

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Cogging torque is one of the factors that influence electric motor efficiency. Many methods have been used to reduce the cogging torque. One of the methods is the determination of the number of slots and poles fraction. This study was intended to determine the number of slots and poles fraction to get a minimum of cogging torque. Research was done by ANSYS software. By varying the number of slots and poles, the data cogging torque and torque ripple were observed. It was found that the lesser difference between the number of slots and poles produced lower cogging torque. More numbers of slots would reduce the cogging torque. The smallest cogging torque was produced at difference in the number of slots and poles of 1 and 2. For slots more than four, the cogging torque produced were irregular.

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Cogging torque reduction of permanent magnet synchronous motor using multi-objective optimization

Ilka

Alinejad‐Beromi

Yaghobi

2018

Mathematics and Computers in Simulation

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A comparison of 2D and 3D analysis methods for the prediction of cogging torque in an electrical machine having skewed slots

Cited by 4 publications

References 6 publications

Design and Analysis of a Bearingless Permanent-Magnet Motor for Axial Blood Pump Applications

Design and Analysis of a Bearingless Permanent-Magnet Motor for Axial Blood Pump Applications

Brushless Direct Current Electric Motor Design with Minimum Cogging Torque

Cogging torque reduction of permanent magnet synchronous motor using multi-objective optimization

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