Cogging Torque Reduction of 6/13 Hybrid Excited Flux Switching Machine with Rotor Step Skewing

Sangdehi, Seyed Milad Kazemi; Abdollahi, Seyed Ehsan; Gholamian, S. Asghar

doi:10.1109/kbei.2019.8735077

Cited by 6 publications

(3 citation statements)

References 32 publications

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“…The methods of reducing the cogging torque usually do not eliminate it completely. Therefore, a common design practice is to minimize the cogging torque of the machine using more than one reduction method [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…• appropriate choice of the angular span of the rotor poles (teeth) in reluctance machines [14,15]; • making slots in the stator or rotor that are skewed [3,4,11,[14][15][16][17]; • desymmetrization of the angular arrangement of rotor poles (teeth) in reluctance machines [4,10,11]; • choice of the shape of the face of the poles/teeth of the stator or rotor [18,19]; • making cuts in the stator teeth or inserting additional teeth [7,15,17]; • using an appropriate current power supply [12,20,21].…”

Section: Introductionmentioning

confidence: 99%

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Reduction in the Cogging Torques in the DCEFSM Motor by Changing the Geometry of the Rotor Teeth

et al. 2022

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The paper presents the results of FEM 2D computational studies of a three-phase Direct Current Excited Flux Switching Machine (DCEFSM) electric motor with rotor teeth and stator teeth. The aim of the research was to minimize the cogging torque of the machine by changing the geometry of the rotor teeth and the size of the air gap between the stator and the rotor, with the operating torques unchanged. Computational studies were carried out on the influence of the width of the rotor teeth, the radius of the rounding of their corners, and the size of the air gap on the cogging torque and machine operating torques. The results of the calculations made it possible to select the dimensions of the rotor and the air gap in such a way that the maximum cogging torque was reduced more than six-fold, with the machine operating torques being unchanged. The calculations also showed that it is not possible to increase the value of the operational torques by further changes in the geometry of the rotor teeth and the size of the air gap of the machine.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reduction in the Cogging Torques in the DCEFSM Motor by Changing the Geometry of the Rotor Teeth

et al. 2022

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“…Although the benefits of a FSPM machine outweigh its drawbacks, these disadvantages could be significant issues on competitive markets. To diminish the torque ripple of FSPM machines, some approaches on rotor designing process are used like rotor pole pairing and rotor pole skewing [9] in a salient pole rotor, and rotor pole notching [10] and transverse laminations [11] in a segmented one. Moreover, to reduce FSPM machine costs, the ferrite magnet is proposed as a suitable alternative to the rare‐earth one which is because the price of a ferrite magnet is almost 10% of the price of a REPMs [12] in the same size.…”

Section: Introductionmentioning

confidence: 99%

Analysis and optimization of a 12/14 double‐stator flux‐switching machine using low cost magnet

Sangdehi

Asadi

Abdollahi

et al. 2020

IET Electric Power Applications

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Flux‐switching permanent magnet (FSPM) machine attracted a great deal of attention for industrial applications owing to its high efficiency and high torque/power densities. However, on the downside, it suffers from high cost of rare‐earth permanent magnets (REPMs). Although employing ferrite magnets remarkably reduces the cost of material, ferrite magnet lower energy product will negatively affect the electromagnetic performance of this machine. As a solution, the double‐stator flux‐switching permanent magnet (DSFSPM) machine has been presented in this paper to improve the electromagnetic performance of a conventional ferrite based FSPM counterpart. In this regard, a new analytical approach followed by a brief discussion of the influence of rotor pole number on the electromagnetic performance of two DSFSPM machines with 10‐ and 14‐pole rotors are studied. It is shown that 12/14 DSFSPM machine with ferrite magnets generates almost 30% more developed torque than the other with 10‐pole rotor. Then, a comprehensive comparison on the electromagnetic performances of a 12/14 DSFSPM machine with ferrite magnets, and two 12/14 FSPM machines with REPMs and ferrite magnets are investigated by finite element method. Besides, a cost study highlights the monetary beneficial of the proposed 12/14 DSFSPM machine for the competitive EVs market. Furthermore, a laboratory scale 12/14 DSFSPM machine is designed based on analytical approach, optimized by Taguchi optimization method, and experimentally tested to validate both analytical and FEM results.

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Optimization of Torque Ripple of Aeronautical Superconducting Homopolar Motor Based on Rotor Eccentric Pole-Cutting

Zhang,

Yang,

Yan

et al. 2024

Lecture Notes in Electrical Engineering

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Cogging Torque Reduction of 6/13 Hybrid Excited Flux Switching Machine with Rotor Step Skewing

Cited by 6 publications

References 32 publications

Reduction in the Cogging Torques in the DCEFSM Motor by Changing the Geometry of the Rotor Teeth

Reduction in the Cogging Torques in the DCEFSM Motor by Changing the Geometry of the Rotor Teeth

Analysis and optimization of a 12/14 double‐stator flux‐switching machine using low cost magnet

Optimization of Torque Ripple of Aeronautical Superconducting Homopolar Motor Based on Rotor Eccentric Pole-Cutting

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