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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IEEE
2024-01-01
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Series: | IEEE Open Access Journal of Power and Energy |
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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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