A novel coreless contra-rotating axial-flux machine for wind power applications

Xing Zhao; Shuangxia Niu

doi:10.1109/CEFC.2016.7816053

A novel coreless contra-rotating axial-flux machine for wind power applications

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

1 Citation (Scopus)

Abstract

This paper presents a novel coreless bidirectional axial-flux-modulation machine for direct-drive contra-rotating wind power generation. Different with the conventional axial flux wind generators, in the proposed machine, dual rotors rotate in the opposite directions and all permanent magnets (PM) with the same polarity are alternatively located with salient poles in rotors. With the bidirectional flux modulation effect, a high-speed rotating magnetic flux harmonic is produced in the air gap and interacts with the coreless windings to produce electricity. With this design, the induced frequency is enhanced and machine volume can be reduced. In addition, the coreless structure can reduce the iron loss. The electromagnetic performance of the proposed machine is analyzed by finite element method (FEM).

Original language	English
Title of host publication	IEEE CEFC 2016 - 17th Biennial Conference on Electromagnetic Field Computation
Publisher	IEEE
ISBN (Electronic)	9781509010325
DOIs	https://doi.org/10.1109/CEFC.2016.7816053
Publication status	Published - 12 Jan 2017
Event	17th Biennial IEEE Conference on Electromagnetic Field Computation, IEEE CEFC 2016 - Hotel Hilton Miami Downtown, Miami, United States Duration: 13 Nov 2016 → 16 Nov 2016

Conference

Conference	17th Biennial IEEE Conference on Electromagnetic Field Computation, IEEE CEFC 2016
Country/Territory	United States
City	Miami
Period	13/11/16 → 16/11/16

Keywords

Contra-rotating
Coreless
FEM
Flux modulation

ASJC Scopus subject areas

Computational Mathematics
Instrumentation
Electrical and Electronic Engineering

More information

10.1109/CEFC.2016.7816053

http://hdl.handle.net/10397/100611

Cite this

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title = "A novel coreless contra-rotating axial-flux machine for wind power applications",

abstract = "This paper presents a novel coreless bidirectional axial-flux-modulation machine for direct-drive contra-rotating wind power generation. Different with the conventional axial flux wind generators, in the proposed machine, dual rotors rotate in the opposite directions and all permanent magnets (PM) with the same polarity are alternatively located with salient poles in rotors. With the bidirectional flux modulation effect, a high-speed rotating magnetic flux harmonic is produced in the air gap and interacts with the coreless windings to produce electricity. With this design, the induced frequency is enhanced and machine volume can be reduced. In addition, the coreless structure can reduce the iron loss. The electromagnetic performance of the proposed machine is analyzed by finite element method (FEM).",

keywords = "Contra-rotating, Coreless, FEM, Flux modulation",

author = "Xing Zhao and Shuangxia Niu",

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AU - Zhao, Xing

AU - Niu, Shuangxia

PY - 2017/1/12

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N2 - This paper presents a novel coreless bidirectional axial-flux-modulation machine for direct-drive contra-rotating wind power generation. Different with the conventional axial flux wind generators, in the proposed machine, dual rotors rotate in the opposite directions and all permanent magnets (PM) with the same polarity are alternatively located with salient poles in rotors. With the bidirectional flux modulation effect, a high-speed rotating magnetic flux harmonic is produced in the air gap and interacts with the coreless windings to produce electricity. With this design, the induced frequency is enhanced and machine volume can be reduced. In addition, the coreless structure can reduce the iron loss. The electromagnetic performance of the proposed machine is analyzed by finite element method (FEM).

AB - This paper presents a novel coreless bidirectional axial-flux-modulation machine for direct-drive contra-rotating wind power generation. Different with the conventional axial flux wind generators, in the proposed machine, dual rotors rotate in the opposite directions and all permanent magnets (PM) with the same polarity are alternatively located with salient poles in rotors. With the bidirectional flux modulation effect, a high-speed rotating magnetic flux harmonic is produced in the air gap and interacts with the coreless windings to produce electricity. With this design, the induced frequency is enhanced and machine volume can be reduced. In addition, the coreless structure can reduce the iron loss. The electromagnetic performance of the proposed machine is analyzed by finite element method (FEM).

KW - Contra-rotating

KW - Coreless

KW - FEM

KW - Flux modulation

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M3 - Conference article published in proceeding or book

BT - IEEE CEFC 2016 - 17th Biennial Conference on Electromagnetic Field Computation

PB - IEEE

T2 - 17th Biennial IEEE Conference on Electromagnetic Field Computation, IEEE CEFC 2016

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ER -

A novel coreless contra-rotating axial-flux machine for wind power applications

Abstract

Conference

Keywords

ASJC Scopus subject areas

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