A Novel Dual-Rotor Homopolar AC Machine

Homopolar AC Machines (HAMs) are of interest because of low rotor loss and the ability to operate at high speeds. These machines are frequently utilized in flywheel energy storage systems but are dominated by permanent magnet or induction machines in other contexts such as vehicle traction. The aim...

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Main Authors: T. Ruekamnuaychok, J. Zhong, S. Sudhoff, R. Swanson, A. Sah, H. Singh, N. Aronhime, E. Schultz
Format: Article
Language:English
Published: IEEE 2024-01-01
Series:IEEE Open Access Journal of Power and Energy
Subjects:
Online Access:https://ieeexplore.ieee.org/document/10713341/
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author T. Ruekamnuaychok
J. Zhong
S. Sudhoff
R. Swanson
A. Sah
H. Singh
N. Aronhime
E. Schultz
author_facet T. Ruekamnuaychok
J. Zhong
S. Sudhoff
R. Swanson
A. Sah
H. Singh
N. Aronhime
E. Schultz
author_sort T. Ruekamnuaychok
collection DOAJ
description Homopolar AC Machines (HAMs) are of interest because of low rotor loss and the ability to operate at high speeds. These machines are frequently utilized in flywheel energy storage systems but are dominated by permanent magnet or induction machines in other contexts such as vehicle traction. The aim of this work is to explore a new type of homopolar machine. The Dual Rotor Homopolar AC Machine (DHAM) is proposed herein. The fundamental operating principles of the DHAM are explained, and its torque production and terminal characteristics are outlined. The permanent magnet version of the machine is shown to achieve an extended constant power speed range without impacting the PM field intensity, allowing the use of magnet materials with modest values of intrinsic coercive force. The machine includes a modular sectionalized stator, which is easy to wind and cool. The DHAM relies on sinusoidal airgap reluctances, and so the necessary rotor geometry is derived. A prototype machine is used to validate the operating principle.
format Article
id doaj-art-5a879dab94cb46acbf13a1bd9506b3aa
institution Kabale University
issn 2687-7910
language English
publishDate 2024-01-01
publisher IEEE
record_format Article
series IEEE Open Access Journal of Power and Energy
spelling doaj-art-5a879dab94cb46acbf13a1bd9506b3aa2025-01-21T00:03:09ZengIEEEIEEE Open Access Journal of Power and Energy2687-79102024-01-011154655710.1109/OAJPE.2024.347592810713341A Novel Dual-Rotor Homopolar AC MachineT. Ruekamnuaychok0J. Zhong1S. Sudhoff2https://orcid.org/0000-0001-8726-7266R. Swanson3A. Sah4https://orcid.org/0009-0004-5883-278XH. Singh5https://orcid.org/0000-0001-9517-8730N. Aronhime6E. Schultz7Elmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USAElmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USAElmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USAElmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USAElmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USAElmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USACarpenter Technology, Reading, PA, USAElmore Family School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USAHomopolar AC Machines (HAMs) are of interest because of low rotor loss and the ability to operate at high speeds. These machines are frequently utilized in flywheel energy storage systems but are dominated by permanent magnet or induction machines in other contexts such as vehicle traction. The aim of this work is to explore a new type of homopolar machine. The Dual Rotor Homopolar AC Machine (DHAM) is proposed herein. The fundamental operating principles of the DHAM are explained, and its torque production and terminal characteristics are outlined. The permanent magnet version of the machine is shown to achieve an extended constant power speed range without impacting the PM field intensity, allowing the use of magnet materials with modest values of intrinsic coercive force. The machine includes a modular sectionalized stator, which is easy to wind and cool. The DHAM relies on sinusoidal airgap reluctances, and so the necessary rotor geometry is derived. A prototype machine is used to validate the operating principle.https://ieeexplore.ieee.org/document/10713341/Electric machinehomopolarpermanent magnet (PM)
spellingShingle T. Ruekamnuaychok
J. Zhong
S. Sudhoff
R. Swanson
A. Sah
H. Singh
N. Aronhime
E. Schultz
A Novel Dual-Rotor Homopolar AC Machine
IEEE Open Access Journal of Power and Energy
Electric machine
homopolar
permanent magnet (PM)
title A Novel Dual-Rotor Homopolar AC Machine
title_full A Novel Dual-Rotor Homopolar AC Machine
title_fullStr A Novel Dual-Rotor Homopolar AC Machine
title_full_unstemmed A Novel Dual-Rotor Homopolar AC Machine
title_short A Novel Dual-Rotor Homopolar AC Machine
title_sort novel dual rotor homopolar ac machine
topic Electric machine
homopolar
permanent magnet (PM)
url https://ieeexplore.ieee.org/document/10713341/
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