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

Influence of rotor-pole number on electromagnetic performance in twelve-phase redundant SFPM machines for wind power generation. / Shao, Lingyun; Hua, Wei; Zhu, Z. Q.; Wu, Zhongze; Cheng, Ming.

Proceedings - 2016 22nd International Conference on Electrical Machines, ICEM 2016. IEEE, 2016. p. 2438-2444 7732863.

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

Shao, L, Hua, W, Zhu, ZQ, 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., 7732863, IEEE, pp. 2438-2444, 22nd International Conference on Electrical Machines, ICEM 2016, Lausanne, Switzerland, 4/09/16. https://doi.org/10.1109/ICELMACH.2016.7732863
Shao L, Hua W, Zhu ZQ, Wu Z, Cheng M. 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. IEEE. 2016. p. 2438-2444. 7732863 https://doi.org/10.1109/ICELMACH.2016.7732863
Shao, Lingyun ; Hua, Wei ; Zhu, Z. Q. ; Wu, Zhongze ; Cheng, Ming. / Influence of rotor-pole number on electromagnetic performance in twelve-phase redundant SFPM machines for wind power generation. Proceedings - 2016 22nd International Conference on Electrical Machines, ICEM 2016. IEEE, 2016. pp. 2438-2444
@inproceedings{baacb77eb3864728a03a69cd88400e22,
title = "Influence of rotor-pole number on electromagnetic performance in twelve-phase redundant SFPM machines for wind power generation",
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.",
keywords = "permanent magnet, redundancy, stator-slot/rotor-pole, Switched flux, twelve-phase, wind power generation",
author = "Lingyun Shao and Wei Hua and Zhu, {Z. Q.} and Zhongze Wu and Ming Cheng",
year = "2016",
month = "11",
day = "2",
doi = "10.1109/ICELMACH.2016.7732863",
language = "English",
pages = "2438--2444",
booktitle = "Proceedings - 2016 22nd International Conference on Electrical Machines, ICEM 2016",
publisher = "IEEE",
address = "USA United States",

}

TY - GEN

T1 - Influence of rotor-pole number on electromagnetic performance in twelve-phase redundant SFPM machines for wind power generation

AU - Shao, Lingyun

AU - Hua, Wei

AU - Zhu, Z. Q.

AU - Wu, Zhongze

AU - Cheng, Ming

PY - 2016/11/2

Y1 - 2016/11/2

N2 - 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.

AB - 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.

KW - permanent magnet

KW - redundancy

KW - stator-slot/rotor-pole

KW - Switched flux

KW - twelve-phase

KW - wind power generation

UR - http://www.scopus.com/inward/record.url?scp=85007319150&partnerID=8YFLogxK

U2 - 10.1109/ICELMACH.2016.7732863

DO - 10.1109/ICELMACH.2016.7732863

M3 - Conference contribution

SP - 2438

EP - 2444

BT - Proceedings - 2016 22nd International Conference on Electrical Machines, ICEM 2016

PB - IEEE

ER -