Torque Production Capability of Axial Flux Machines with Single and Double Rotor Configurations

Narges Taran; Greg Heins; Vandana Rallabandi; Dean Patterson; Dan M. Ionel

doi:10.1109/ECCE.2018.8557818

Torque Production Capability of Axial Flux Machines with Single and Double Rotor Configurations

Narges Taran, Greg Heins, Vandana Rallabandi, Dean Patterson, Dan M. Ionel

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

18 Scopus citations

Abstract

Axial flux PM (AFPM) machines are used particularly in applications requiring a compact structure. Their disc shape topology and axial air-gap have lead to a variety of configurations including two popular ones: the yokeless and segmented armature (YASA), and the single-stator single-rotor or single sided machine. In this study, a comprehensive comparative analysis of these configurations is conducted at different magnetic and electric loadings. It is found that at lower loadings, typically employed for air-cooled machines, the torque/ampere characteristics of the YASA machine are almost identical to those of a single sided machine constructed with half the magnet volume. On the other hand, the single sided machine outperforms the YASA machine when the magnet volumes in both machines are maintained equal. However, for higher electric loadings, the torque/ampere characteristics of the YASA machine droop significantly less than those of the single sided machine. The paper includes analytical estimations which are verified with experimentally validated FEA simulations. In addition, the impacts of the armature reaction on saturation and the magnetic flux linkage in both machines is also explored.

Original language	English
Title of host publication	2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	7336-7341
Number of pages	6
ISBN (Electronic)	9781479973118
DOIs	https://doi.org/10.1109/ECCE.2018.8557818
State	Published - Dec 3 2018
Externally published	Yes
Event	10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States Duration: Sep 23 2018 → Sep 27 2018

Publication series

Name	2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Conference

Conference	10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Country/Territory	United States
City	Portland
Period	09/23/18 → 09/27/18

Funding

ACKNOWLEDGMENT The support of Regal Beloit Corporation, University of Kentucky, the L. Stanley Pigman endowment and the SPARK program, and ANSYS Inc. is gratefully acknowledged.

Keywords

Armature reaction
Axial flux permanent magnet
Power factor
YASA
Yokeless and segmented armature

Access to Document

10.1109/ECCE.2018.8557818

Cite this

Taran, N., Heins, G., Rallabandi, V., Patterson, D., & Ionel, D. M. (2018). Torque Production Capability of Axial Flux Machines with Single and Double Rotor Configurations. In 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 (pp. 7336-7341). Article 8557818 (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2018.8557818

@inproceedings{d189501e96de4ebeb7a4087e31e6e41b,

title = "Torque Production Capability of Axial Flux Machines with Single and Double Rotor Configurations",

abstract = "Axial flux PM (AFPM) machines are used particularly in applications requiring a compact structure. Their disc shape topology and axial air-gap have lead to a variety of configurations including two popular ones: the yokeless and segmented armature (YASA), and the single-stator single-rotor or single sided machine. In this study, a comprehensive comparative analysis of these configurations is conducted at different magnetic and electric loadings. It is found that at lower loadings, typically employed for air-cooled machines, the torque/ampere characteristics of the YASA machine are almost identical to those of a single sided machine constructed with half the magnet volume. On the other hand, the single sided machine outperforms the YASA machine when the magnet volumes in both machines are maintained equal. However, for higher electric loadings, the torque/ampere characteristics of the YASA machine droop significantly less than those of the single sided machine. The paper includes analytical estimations which are verified with experimentally validated FEA simulations. In addition, the impacts of the armature reaction on saturation and the magnetic flux linkage in both machines is also explored.",

keywords = "Armature reaction, Axial flux permanent magnet, Power factor, YASA, Yokeless and segmented armature",

author = "Narges Taran and Greg Heins and Vandana Rallabandi and Dean Patterson and Ionel, \{Dan M.\}",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 ; Conference date: 23-09-2018 Through 27-09-2018",

year = "2018",

month = dec,

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doi = "10.1109/ECCE.2018.8557818",

language = "English",

series = "2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018",

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Taran, N, Heins, G, Rallabandi, V, Patterson, D & Ionel, DM 2018, Torque Production Capability of Axial Flux Machines with Single and Double Rotor Configurations. in 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018., 8557818, 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018, Institute of Electrical and Electronics Engineers Inc., pp. 7336-7341, 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018, Portland, United States, 09/23/18. https://doi.org/10.1109/ECCE.2018.8557818

Torque Production Capability of Axial Flux Machines with Single and Double Rotor Configurations. / Taran, Narges; Heins, Greg; Rallabandi, Vandana et al.
2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 7336-7341 8557818 (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Torque Production Capability of Axial Flux Machines with Single and Double Rotor Configurations

AU - Taran, Narges

AU - Heins, Greg

AU - Rallabandi, Vandana

AU - Patterson, Dean

AU - Ionel, Dan M.

PY - 2018/12/3

Y1 - 2018/12/3

N2 - Axial flux PM (AFPM) machines are used particularly in applications requiring a compact structure. Their disc shape topology and axial air-gap have lead to a variety of configurations including two popular ones: the yokeless and segmented armature (YASA), and the single-stator single-rotor or single sided machine. In this study, a comprehensive comparative analysis of these configurations is conducted at different magnetic and electric loadings. It is found that at lower loadings, typically employed for air-cooled machines, the torque/ampere characteristics of the YASA machine are almost identical to those of a single sided machine constructed with half the magnet volume. On the other hand, the single sided machine outperforms the YASA machine when the magnet volumes in both machines are maintained equal. However, for higher electric loadings, the torque/ampere characteristics of the YASA machine droop significantly less than those of the single sided machine. The paper includes analytical estimations which are verified with experimentally validated FEA simulations. In addition, the impacts of the armature reaction on saturation and the magnetic flux linkage in both machines is also explored.

AB - Axial flux PM (AFPM) machines are used particularly in applications requiring a compact structure. Their disc shape topology and axial air-gap have lead to a variety of configurations including two popular ones: the yokeless and segmented armature (YASA), and the single-stator single-rotor or single sided machine. In this study, a comprehensive comparative analysis of these configurations is conducted at different magnetic and electric loadings. It is found that at lower loadings, typically employed for air-cooled machines, the torque/ampere characteristics of the YASA machine are almost identical to those of a single sided machine constructed with half the magnet volume. On the other hand, the single sided machine outperforms the YASA machine when the magnet volumes in both machines are maintained equal. However, for higher electric loadings, the torque/ampere characteristics of the YASA machine droop significantly less than those of the single sided machine. The paper includes analytical estimations which are verified with experimentally validated FEA simulations. In addition, the impacts of the armature reaction on saturation and the magnetic flux linkage in both machines is also explored.

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KW - Axial flux permanent magnet

KW - Power factor

KW - YASA

KW - Yokeless and segmented armature

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M3 - Conference contribution

AN - SCOPUS:85060302921

T3 - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

SP - 7336

EP - 7341

BT - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018

Y2 - 23 September 2018 through 27 September 2018

ER -

Taran N, Heins G, Rallabandi V, Patterson D, Ionel DM. Torque Production Capability of Axial Flux Machines with Single and Double Rotor Configurations. In 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 7336-7341. 8557818. (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018). doi: 10.1109/ECCE.2018.8557818

Torque Production Capability of Axial Flux Machines with Single and Double Rotor Configurations

Abstract

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Keywords

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