Influence of rotor-pole number on electromagnetic performance in twelve-phase redundant SFPM machines for wind power generation

Lingyun Shao, Wei Hua, Z. Q. Zhu, Zhongze Wu, Ming Cheng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper, electromagnetic performances of twelve-phase 24-stator-slot redundant switched flux permanent magnet (SFPM) machines with 20-, 22-, 26- and 28-rotor-pole rotors are analyzed. The influences of key design parameters on the open-circuit electro-motive-force (EMF) and cogging torque are comparatively evaluated by 2D finite-element analysis (FEA). FEA results show that the 24/26 SFPM machine exhibits the highest electromagnetic torque and efficiency than the other three, whilst the 24/22 one has the smallest cogging torque and torque ripple as well as relatively good power factor, voltage regulation and efficiency which are essential for a wind generator. Furthermore, the investigation on redundancy shows that cross-coupling among the four sets of three-phase balanced windings and the saturation effect can be neglected when the generator operates with light loads. Lastly, the prototyped twelve-phase 24/22 SFPM machine is measured to validate the simulations.

Original languageEnglish
Title of host publicationProceedings - 2016 22nd International Conference on Electrical Machines, ICEM 2016
PublisherIEEE
Pages2438-2444
Number of pages7
ISBN (Electronic)9781509025381
DOIs
Publication statusPublished - 2 Nov 2016
Event22nd International Conference on Electrical Machines, ICEM 2016 - Lausanne, Switzerland
Duration: 4 Sep 20167 Sep 2016

Conference

Conference22nd International Conference on Electrical Machines, ICEM 2016
CountrySwitzerland
CityLausanne
Period4/09/167/09/16

Keywords

  • permanent magnet
  • redundancy
  • stator-slot/rotor-pole
  • Switched flux
  • twelve-phase
  • wind power generation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering

Cite this

Shao, L., Hua, W., Zhu, Z. Q., Wu, Z., & Cheng, M. (2016). Influence of rotor-pole number on electromagnetic performance in twelve-phase redundant SFPM machines for wind power generation. In Proceedings - 2016 22nd International Conference on Electrical Machines, ICEM 2016 (pp. 2438-2444). [7732863] IEEE. https://doi.org/10.1109/ICELMACH.2016.7732863