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Influence of stator slot openings on losses and torque in axial flux permanent magnet machines

Peter Sergeant (UGent) , Hendrik Vansompel (UGent) and Luc Dupré (UGent)
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Abstract
Among the different geometrical parameters to be chosen during design of axial flux permanent magnet synchronous machines, the width of the stator slot openings near the air gap is an important parameter: it has a major influence on the power loss in the stator core and in the permanent magnets on the two rotors of the studied type of axial flux machines. Moreover, the stator slot openings parameter has a converse impact on both power losses. On the one hand, the increase in stator slot openings results in a reduction of the power losses in the stator core elements. On the other hand, it also results in increased loss in the permanent magnets. Also the torque is reduced for large but also for very small slot openings. This paper deals with axial flux machines of the YASA type: yokeless and segmented armature. It is shown that the slot openings contribute to an unequal flux density level over the different laminations in the stator core. Insight in the impact of the slot openings variation on both power losses (in stator iron and in permanent magnets) is provided, and an illustrative case is discussed in which the impact of the slot openings variation on both power losses is examined quantitatively. (C) 2016 International Association for Mathematics and Computers in Simulation (IMACS). Published by Elsevier B.V. All rights reserved.
Keywords
COGGING TORQUE, SYNCHRONOUS MACHINE, PM MACHINE, DESIGN, PERFORMANCE, WINDINGS, MOTORS, OPTIMIZATION, WEDGES, ROTOR, Axial flux, Permanent magnet machine, Losses

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MLA
Sergeant, Peter, Hendrik Vansompel, and Luc Dupré. “Influence of Stator Slot Openings on Losses and Torque in Axial Flux Permanent Magnet Machines.” MATHEMATICS AND COMPUTERS IN SIMULATION 130 (2016): 22–31. Print.
APA
Sergeant, P., Vansompel, H., & Dupré, L. (2016). Influence of stator slot openings on losses and torque in axial flux permanent magnet machines. MATHEMATICS AND COMPUTERS IN SIMULATION, 130, 22–31.
Chicago author-date
Sergeant, Peter, Hendrik Vansompel, and Luc Dupré. 2016. “Influence of Stator Slot Openings on Losses and Torque in Axial Flux Permanent Magnet Machines.” Mathematics and Computers in Simulation 130: 22–31.
Chicago author-date (all authors)
Sergeant, Peter, Hendrik Vansompel, and Luc Dupré. 2016. “Influence of Stator Slot Openings on Losses and Torque in Axial Flux Permanent Magnet Machines.” Mathematics and Computers in Simulation 130: 22–31.
Vancouver
1.
Sergeant P, Vansompel H, Dupré L. Influence of stator slot openings on losses and torque in axial flux permanent magnet machines. MATHEMATICS AND COMPUTERS IN SIMULATION. Amsterdam: Elsevier Science Bv; 2016;130:22–31.
IEEE
[1]
P. Sergeant, H. Vansompel, and L. Dupré, “Influence of stator slot openings on losses and torque in axial flux permanent magnet machines,” MATHEMATICS AND COMPUTERS IN SIMULATION, vol. 130, pp. 22–31, 2016.
@article{8501975,
  abstract     = {Among the different geometrical parameters to be chosen during design of axial flux permanent magnet synchronous machines, the width of the stator slot openings near the air gap is an important parameter: it has a major influence on the power loss in the stator core and in the permanent magnets on the two rotors of the studied type of axial flux machines. Moreover, the stator slot openings parameter has a converse impact on both power losses. On the one hand, the increase in stator slot openings results in a reduction of the power losses in the stator core elements. On the other hand, it also results in increased loss in the permanent magnets. Also the torque is reduced for large but also for very small slot openings. This paper deals with axial flux machines of the YASA type: yokeless and segmented armature. It is shown that the slot openings contribute to an unequal flux density level over the different laminations in the stator core. Insight in the impact of the slot openings variation on both power losses (in stator iron and in permanent magnets) is provided, and an illustrative case is discussed in which the impact of the slot openings variation on both power losses is examined quantitatively. (C) 2016 International Association for Mathematics and Computers in Simulation (IMACS). Published by Elsevier B.V. All rights reserved.},
  author       = {Sergeant, Peter and Vansompel, Hendrik and Dupré, Luc},
  issn         = {0378-4754},
  journal      = {MATHEMATICS AND COMPUTERS IN SIMULATION},
  keywords     = {COGGING TORQUE,SYNCHRONOUS MACHINE,PM MACHINE,DESIGN,PERFORMANCE,WINDINGS,MOTORS,OPTIMIZATION,WEDGES,ROTOR,Axial flux,Permanent magnet machine,Losses},
  language     = {eng},
  pages        = {22--31},
  publisher    = {Elsevier Science Bv},
  title        = {Influence of stator slot openings on losses and torque in axial flux permanent magnet machines},
  url          = {http://dx.doi.org/10.1016/j.matcom.2016.03.002},
  volume       = {130},
  year         = {2016},
}

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