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Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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Design and Analysis of a Material Efficient Sinusoidal Consequent-Pole High-Speed Axial-Flux Machine

  • Kumar, Sunil (Department of Electronic Systems Engineering, Hanyang University) ;
  • Kwon, Byung-il (Department of Electronic Systems Engineering, Hanyang University)
  • Received : 2018.09.07
  • Accepted : 2018.09.20
  • Published : 2018.09.30
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Abstract

This paper presents a high-speed axial-flux machine which utilizes the idea of sinusoidal shaped pole combined with a consequent iron-pole. The target of the proposed machine is the cost reduction of the relatively expensive Samarium-Cobalt (SmCo) permanent magnet (PM) material and the torque per PM volume improvement by using sinusoidal consequent-pole rotor. The effectiveness of the proposed machine is validated by comparing it with conventional consequent-pole and with conventional PM machines using 3-D finite element method (FEM) simulations. The comparison and analysis is done in terms of back electro-motive force (back-EMF) harmonic contents, torque per PM volume and torque ripple characteristics. The simulation results show that the proposed machine is suitable and cost-effective for high-speed and high torque per PM volume applications. Furthermore, due to the consequent pole, the magnetic flux saturation and the overload current torque-capability are also presented and discussed in the paper.

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References

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