Unbalanced distributed and balanced concentrated winding comparison in servo motor applications

MEŞE E. , Yasa Y., Ertugrul B. T. , SİNCAR E.

ELECTRIC POWER SYSTEMS RESEARCH, cilt.156, ss.64-74, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 156
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.epsr.2017.11.013
  • Sayfa Sayıları: ss.64-74


A comparison between unbalanced distributed winding and balanced concentrated winding is presented in this paper. The application is a torque motor where low speed and high torque are main requirements. Concentrated winding slot/pole combination is selected so that winding factor is maximum and as well as it is equal to the winding factor of the unbalanced winding motor. Stator and rotor Magneto-Motive Force (MMF) functions are obtained for both motor types to model torque ripple components in the frequency spectrum. Finite element analysis (FEA) and experimental results are presented to compare back EMF waveforms, magnetic loading, torque constant and thermal performance of two motors.