Comparison of Permanent Magnet Machines Equipped with Unbalanced Fractional-Slot Distributed Windings vs. Balanced Fractional-Slot Concentrated Windings

Demir Y., El-Refaie A., AYDIN M.

IEEE International Electric Machines and Drives Conference (IEMDC), ELECTR NETWORK, 17 - 20 Mayıs 2021 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/iemdc47953.2021.9449610
  • Basıldığı Ülke: ELECTR NETWORK
  • Anahtar Kelimeler: Unbalanced winding motor, fractional-slot concentrated winding, permanent magnet motor, concentrated winding, balanced winding, PM MOTORS
  • Kocaeli Üniversitesi Adresli: Evet

Özet

Fractional-slot concentrated winding permanent magnet (PM) machines have been gaining interest over the last decade in various applications. In this paper, a comparison of various conventional fractional-slot PM machines with an unconventional and unbalanced fractional-slot distributed winding PM motor is presented. The motors are designed for the same torque-speed curve, same design envelope, same electrical loading and magnet weight. No skewing is utilized in the designs for a fair comparison. It is found that 12-slot/10-pole and 27-slot/12-pole combinations stand out in terms of meeting the same torque-speed profile of the baseline machine with 39-slot/12-pole while having comparable performance metrics especially when it comes to reducing torque ripple.