Influence of Rotor-Pole Number on Electromagnetic Performance in 12-Phase Redundant Switched Flux Permanent Magnet Machines for Wind Power Generation

Lingyun Shao; Wei Hua; Z. Q. Zhu; Minghao Tong; Guishu Zhao; Fangbo Yin; Zhongze Wu; Ming Cheng

doi:10.1109/TIA.2017.2681038

Influence of Rotor-Pole Number on Electromagnetic Performance in 12-Phase Redundant Switched Flux Permanent Magnet Machines for Wind Power Generation

Lingyun Shao, Wei Hua, Z. Q. Zhu, Minghao Tong, Guishu Zhao, Fangbo Yin, Zhongze Wu, Ming Cheng

Research output: Contribution to journal › Article › peer-review

35 Citations (SciVal)

Abstract

In this paper, electromagnetic performances of 12-phase 24-stator-pole redundant switched flux permanent magnet (SFPM) machines with 20-, 22-, 26-, and 28-rotor-pole rotors designed for wind power generation are comparatively analyzed. The influence of key design parameters on the open-circuit phase electromotive force and cogging torque is comparatively evaluated by a 2-D finite-element analysis (FEA). FEA results show that the 24-/26-pole SFPM machine exhibits the highest electromagnetic torque and efficiency than the other three, while the 24-/22-pole one has the smallest cogging torque and torque ripple as well as relatively good voltage regulation and efficiency, which are essential for a wind generator. Furthermore, the investigation on redundancy performance 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 relative light loads. Finally, the 12-phase 24-/22-pole SFPM machine is built and tested to validate the simulations.

Original language	English
Article number	7875405
Pages (from-to)	3305-3316
Number of pages	12
Journal	IEEE Transactions on Industry Applications
Volume	53
Issue number	4
Early online date	10 Mar 2017
DOIs	https://doi.org/10.1109/TIA.2017.2681038
Publication status	Published - 15 Jul 2017

Funding

Manuscript received October 17, 2016; revised January 8, 2017; accepted March 5, 2017. Date of publication March 10, 2017; date of current version July 15, 2017. Paper 2016-EMC-1039.R1, presented at the 2016 XXII International Conference on Electrical Machines, Ecublens, Switzerland, Sep. 4–7, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Electric Machines Committee of the IEEE Industry Applications Society. This work was supported in part by the National Natural Science Foundation of China under Grant 51137001 and Grant 51322705.

Keywords

12 phase
flux switching
permanent magnet (PM)
redundancy
stator/rotor pole
switched flux (SF)
wind power generation

ASJC Scopus subject areas

Control and Systems Engineering
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1109/TIA.2017.2681038

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title = "Influence of Rotor-Pole Number on Electromagnetic Performance in 12-Phase Redundant Switched Flux Permanent Magnet Machines for Wind Power Generation",

abstract = "In this paper, electromagnetic performances of 12-phase 24-stator-pole redundant switched flux permanent magnet (SFPM) machines with 20-, 22-, 26-, and 28-rotor-pole rotors designed for wind power generation are comparatively analyzed. The influence of key design parameters on the open-circuit phase electromotive force and cogging torque is comparatively evaluated by a 2-D finite-element analysis (FEA). FEA results show that the 24-/26-pole SFPM machine exhibits the highest electromagnetic torque and efficiency than the other three, while the 24-/22-pole one has the smallest cogging torque and torque ripple as well as relatively good voltage regulation and efficiency, which are essential for a wind generator. Furthermore, the investigation on redundancy performance 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 relative light loads. Finally, the 12-phase 24-/22-pole SFPM machine is built and tested to validate the simulations.",

keywords = "12 phase, flux switching, permanent magnet (PM), redundancy, stator/rotor pole, switched flux (SF), wind power generation",

author = "Lingyun Shao and Wei Hua and Zhu, {Z. Q.} and Minghao Tong and Guishu Zhao and Fangbo Yin and Zhongze Wu and Ming Cheng",

year = "2017",

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doi = "10.1109/TIA.2017.2681038",

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journal = "IEEE Transactions on Industry Applications",

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AU - Shao, Lingyun

AU - Hua, Wei

AU - Zhu, Z. Q.

AU - Tong, Minghao

AU - Zhao, Guishu

AU - Yin, Fangbo

AU - Wu, Zhongze

AU - Cheng, Ming

PY - 2017/7/15

Y1 - 2017/7/15

N2 - In this paper, electromagnetic performances of 12-phase 24-stator-pole redundant switched flux permanent magnet (SFPM) machines with 20-, 22-, 26-, and 28-rotor-pole rotors designed for wind power generation are comparatively analyzed. The influence of key design parameters on the open-circuit phase electromotive force and cogging torque is comparatively evaluated by a 2-D finite-element analysis (FEA). FEA results show that the 24-/26-pole SFPM machine exhibits the highest electromagnetic torque and efficiency than the other three, while the 24-/22-pole one has the smallest cogging torque and torque ripple as well as relatively good voltage regulation and efficiency, which are essential for a wind generator. Furthermore, the investigation on redundancy performance 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 relative light loads. Finally, the 12-phase 24-/22-pole SFPM machine is built and tested to validate the simulations.

AB - In this paper, electromagnetic performances of 12-phase 24-stator-pole redundant switched flux permanent magnet (SFPM) machines with 20-, 22-, 26-, and 28-rotor-pole rotors designed for wind power generation are comparatively analyzed. The influence of key design parameters on the open-circuit phase electromotive force and cogging torque is comparatively evaluated by a 2-D finite-element analysis (FEA). FEA results show that the 24-/26-pole SFPM machine exhibits the highest electromagnetic torque and efficiency than the other three, while the 24-/22-pole one has the smallest cogging torque and torque ripple as well as relatively good voltage regulation and efficiency, which are essential for a wind generator. Furthermore, the investigation on redundancy performance 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 relative light loads. Finally, the 12-phase 24-/22-pole SFPM machine is built and tested to validate the simulations.

KW - 12 phase

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KW - permanent magnet (PM)

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KW - stator/rotor pole

KW - switched flux (SF)

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Influence of Rotor-Pole Number on Electromagnetic Performance in 12-Phase Redundant Switched Flux Permanent Magnet Machines for Wind Power Generation

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