Reducing Torque Ripples of the Axial Flux PM Motors by Magnet Stepping and Shifting

ÇETİN E., DALDABAN F.

ENGINEERING TECHNOLOGY & APPLIED SCIENCE RESEARCH, cilt.8, sa.1, ss.2385-2388, 2018 (ESCI) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 8 Sayı: 1
  • Basım Tarihi: 2018
  • Dergi Adı: ENGINEERING TECHNOLOGY & APPLIED SCIENCE RESEARCH
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI)
  • Sayfa Sayıları: ss.2385-2388
  • Anahtar Kelimeler: axial flux machines, step and shift, rotor magnet poles, torque ripple, back emf, permanent-magnet machines, PERMANENT-MAGNET, COGGING TORQUE, MACHINES, MINIMIZATION, DESIGN
  • Yozgat Bozok Üniversitesi Adresli: Evet

Özet

Higher efficiency on electric machines is the research goal of many studies. An example is the axial flux permanent magnet machines. These machines have some advantages like their watt/kg efficiency and torque density. This study aims to develop the performance characteristics of the axial flux permanent magnet machines. A new rotor magnet poles design in axial flux machines is suggested to mitigate the torque ripples. The method of stepping and shifting of the magnets is used. Two different designs are compared to verify the proposed approach. 3D finite element analysis is used for simulations. Torque ripple and back electromotive force waveforms are obtained from computer analysis. As a conclusion, the suggested method is found to be useable and mitigates the torque ripples. In addition to that, back EMF waveforms are turned to sinusoidal by the suggested design.