Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils

Vandana Rallabandi; Narges Taran; Dan M. Ionel; Ion G. Boldea

doi:10.1109/IEMDC.2017.8002371

Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils

Vandana Rallabandi, Narges Taran, Dan M. Ionel, Ion G. Boldea

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

6 Scopus citations

Abstract

Permanent magnet machines including a magnetic gearing effect are attractive for low-speed high-Torque applications. This paper proposes a dual-stator axial-flux machine topology with a high ratio for the number of rotor poles to concentrated stator coils. The stator consists of a relatively small number of teeth, with each tooth including multiple smaller/auxiliary teeth. The rotor employs spoke-Type permanent magnets, which result in high flux concentration, thereby further improving the torque density. The paper discusses the principle of operation of the proposed machine topology. Finite element results on example designs with 6 stator teeth, each having 2 and 3 auxiliary teeth, and with 20, 32, and 34 rotor poles are presented, respectively. Other feasible slot-pole combinations are also identified.

Original language	English
Title of host publication	2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017
ISBN (Electronic)	9781509042814
DOIs	https://doi.org/10.1109/IEMDC.2017.8002371
State	Published - Aug 3 2017
Event	2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017 - Miami, United States Duration: May 21 2017 → May 24 2017

Publication series

Name	2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017

Conference

Conference	2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017
Country/Territory	United States
City	Miami
Period	5/21/17 → 5/24/17

Bibliographical note

Publisher Copyright:
© 2017 IEEE.

Keywords

Permanent magnet machines
Vernier electric machines
axial flux
electro-magnetic FEA
high-Torque low-speed machines
special electric motors
spoke permanent magnets

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Mechanical Engineering

Access to Document

10.1109/IEMDC.2017.8002371

Cite this

Rallabandi, V., Taran, N., Ionel, D. M., & Boldea, I. G. (2017). Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils. In 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017 [8002371] (2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017). https://doi.org/10.1109/IEMDC.2017.8002371

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title = "Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils",

abstract = "Permanent magnet machines including a magnetic gearing effect are attractive for low-speed high-Torque applications. This paper proposes a dual-stator axial-flux machine topology with a high ratio for the number of rotor poles to concentrated stator coils. The stator consists of a relatively small number of teeth, with each tooth including multiple smaller/auxiliary teeth. The rotor employs spoke-Type permanent magnets, which result in high flux concentration, thereby further improving the torque density. The paper discusses the principle of operation of the proposed machine topology. Finite element results on example designs with 6 stator teeth, each having 2 and 3 auxiliary teeth, and with 20, 32, and 34 rotor poles are presented, respectively. Other feasible slot-pole combinations are also identified.",

keywords = "Permanent magnet machines, Vernier electric machines, axial flux, electro-magnetic FEA, high-Torque low-speed machines, special electric motors, spoke permanent magnets",

author = "Vandana Rallabandi and Narges Taran and Ionel, {Dan M.} and Boldea, {Ion G.}",

note = "Publisher Copyright: {\textcopyright} 2017 IEEE.; 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017 ; Conference date: 21-05-2017 Through 24-05-2017",

year = "2017",

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doi = "10.1109/IEMDC.2017.8002371",

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Rallabandi, V, Taran, N, Ionel, DM & Boldea, IG 2017, Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils. in 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017., 8002371, 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017, 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017, Miami, United States, 5/21/17. https://doi.org/10.1109/IEMDC.2017.8002371

Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils. / Rallabandi, Vandana; Taran, Narges; Ionel, Dan M. et al.
2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017. 2017. 8002371 (2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017).

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

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AU - Ionel, Dan M.

AU - Boldea, Ion G.

PY - 2017/8/3

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N2 - Permanent magnet machines including a magnetic gearing effect are attractive for low-speed high-Torque applications. This paper proposes a dual-stator axial-flux machine topology with a high ratio for the number of rotor poles to concentrated stator coils. The stator consists of a relatively small number of teeth, with each tooth including multiple smaller/auxiliary teeth. The rotor employs spoke-Type permanent magnets, which result in high flux concentration, thereby further improving the torque density. The paper discusses the principle of operation of the proposed machine topology. Finite element results on example designs with 6 stator teeth, each having 2 and 3 auxiliary teeth, and with 20, 32, and 34 rotor poles are presented, respectively. Other feasible slot-pole combinations are also identified.

AB - Permanent magnet machines including a magnetic gearing effect are attractive for low-speed high-Torque applications. This paper proposes a dual-stator axial-flux machine topology with a high ratio for the number of rotor poles to concentrated stator coils. The stator consists of a relatively small number of teeth, with each tooth including multiple smaller/auxiliary teeth. The rotor employs spoke-Type permanent magnets, which result in high flux concentration, thereby further improving the torque density. The paper discusses the principle of operation of the proposed machine topology. Finite element results on example designs with 6 stator teeth, each having 2 and 3 auxiliary teeth, and with 20, 32, and 34 rotor poles are presented, respectively. Other feasible slot-pole combinations are also identified.

KW - Permanent magnet machines

KW - Vernier electric machines

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KW - high-Torque low-speed machines

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KW - spoke permanent magnets

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Rallabandi V, Taran N, Ionel DM, Boldea IG. Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils. In 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017. 2017. 8002371. (2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017). doi: 10.1109/IEMDC.2017.8002371

Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils

Abstract

Publication series

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Bibliographical note

Keywords

ASJC Scopus subject areas

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Cite this