Fault Tolerant Electric Machine Concept for Aircraft Propulsion with PM Rotor and DC Current Stator Dual-Stage Excitation

Donovin D. Lewis; Oluwaseun A. Badewa; Ali Mohammadi; Matin Vatani; Dan M. Ionel

doi:10.1109/ICRERA59003.2023.10269383

Fault Tolerant Electric Machine Concept for Aircraft Propulsion with PM Rotor and DC Current Stator Dual-Stage Excitation

Donovin D. Lewis, Oluwaseun A. Badewa, Ali Mohammadi, Matin Vatani, Dan M. Ionel

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

11 Scopus citations

Abstract

The development of electrically propelled aircraft requires electric machines that are fault-tolerant, compact, and efficient at multiple operating points. This paper proposes a novel machine topology combining a coreless Halbach PM array axial flux unit and a PM-less synchronous hybrid excited radial flux unit. Both units are coupled on the same shaft to take advantage of the opportunities available in the unique usage profile for aviation. The machines can be used simultaneously for the take off and altitude climbing stage or used individually during the cruising stage. The coreless axial flux PM (CAFPM) motor unit consists of two Halbach array PM rotors, two stators, and an integrated cooling plate to enable high efficiency at maximal current density. The stator DC-excited synchronous (SDCES) motor unit operates using AC 3-phase and DC stator windings employing concentrated non-overlapping toroidal coils with a reluctance consequent-pole rotor. Both units have two stator modules which are independently excited and controlled, allowing for continued propulsion under partial system deterioration. Combining both units takes advantage of the high specific power and efficiency of the CAFPM due to the Halbach array and cooling potential and the fault tolerance of the SDCES, with no potential for demagnetization and separate excitation.

Original language	English
Title of host publication	12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023
Pages	607-611
Number of pages	5
ISBN (Electronic)	9798350337938
DOIs	https://doi.org/10.1109/ICRERA59003.2023.10269383
State	Published - 2023
Event	12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023 - Oshawa, Canada Duration: Aug 29 2023 → Sep 1 2023

Publication series

Name	12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023

Conference

Conference	12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023
Country/Territory	Canada
City	Oshawa
Period	8/29/23 → 9/1/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Funding

ACKNOWLEDGMENT This research was funded by the National Aeronautics and Space Administration (NASA) University Leadership Initiative (ULI) #80NSSC22M0068. The support for Donovin Lewis through a National Science Foundation Graduate (NSF) Fellowship under Grant No. 1839289, and of QM Power, Inc., ANSYS, Inc., and University of Kentucky, the L. Stanley Pigman Chair in Power is also gratefully acknowledged. Any findings and conclusions expressed herein are those of the authors and do not necessarily reflect the views of the sponsor organizations.

Funders	Funder number
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China	1839289
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China
National Aeronautics and Space Administration	80NSSC22M0068
National Aeronautics and Space Administration
University of Kentucky

Keywords

Aircraft propulsion
coreless machines
electric machine
hybrid excitation
modularization
permanent magnets
synchronous machines

ASJC Scopus subject areas

Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Electrical and Electronic Engineering
Mechanical Engineering
Control and Optimization

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/ICRERA59003.2023.10269383

Cite this

Lewis, D. D., Badewa, O. A., Mohammadi, A., Vatani, M., & Ionel, D. M. (2023). Fault Tolerant Electric Machine Concept for Aircraft Propulsion with PM Rotor and DC Current Stator Dual-Stage Excitation. In 12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023 (pp. 607-611). (12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023). https://doi.org/10.1109/ICRERA59003.2023.10269383

Lewis, Donovin D. ; Badewa, Oluwaseun A. ; Mohammadi, Ali et al. / Fault Tolerant Electric Machine Concept for Aircraft Propulsion with PM Rotor and DC Current Stator Dual-Stage Excitation. 12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023. 2023. pp. 607-611 (12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023).

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title = "Fault Tolerant Electric Machine Concept for Aircraft Propulsion with PM Rotor and DC Current Stator Dual-Stage Excitation",

abstract = "The development of electrically propelled aircraft requires electric machines that are fault-tolerant, compact, and efficient at multiple operating points. This paper proposes a novel machine topology combining a coreless Halbach PM array axial flux unit and a PM-less synchronous hybrid excited radial flux unit. Both units are coupled on the same shaft to take advantage of the opportunities available in the unique usage profile for aviation. The machines can be used simultaneously for the take off and altitude climbing stage or used individually during the cruising stage. The coreless axial flux PM (CAFPM) motor unit consists of two Halbach array PM rotors, two stators, and an integrated cooling plate to enable high efficiency at maximal current density. The stator DC-excited synchronous (SDCES) motor unit operates using AC 3-phase and DC stator windings employing concentrated non-overlapping toroidal coils with a reluctance consequent-pole rotor. Both units have two stator modules which are independently excited and controlled, allowing for continued propulsion under partial system deterioration. Combining both units takes advantage of the high specific power and efficiency of the CAFPM due to the Halbach array and cooling potential and the fault tolerance of the SDCES, with no potential for demagnetization and separate excitation.",

keywords = "Aircraft propulsion, coreless machines, electric machine, hybrid excitation, modularization, permanent magnets, synchronous machines",

author = "Lewis, \{Donovin D.\} and Badewa, \{Oluwaseun A.\} and Ali Mohammadi and Matin Vatani and Ionel, \{Dan M.\}",

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Lewis, DD, Badewa, OA, Mohammadi, A, Vatani, M & Ionel, DM 2023, Fault Tolerant Electric Machine Concept for Aircraft Propulsion with PM Rotor and DC Current Stator Dual-Stage Excitation. in 12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023. 12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023, pp. 607-611, 12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023, Oshawa, Canada, 8/29/23. https://doi.org/10.1109/ICRERA59003.2023.10269383

Fault Tolerant Electric Machine Concept for Aircraft Propulsion with PM Rotor and DC Current Stator Dual-Stage Excitation. / Lewis, Donovin D.; Badewa, Oluwaseun A.; Mohammadi, Ali et al.
12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023. 2023. p. 607-611 (12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023).

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

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AU - Vatani, Matin

AU - Ionel, Dan M.

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AB - The development of electrically propelled aircraft requires electric machines that are fault-tolerant, compact, and efficient at multiple operating points. This paper proposes a novel machine topology combining a coreless Halbach PM array axial flux unit and a PM-less synchronous hybrid excited radial flux unit. Both units are coupled on the same shaft to take advantage of the opportunities available in the unique usage profile for aviation. The machines can be used simultaneously for the take off and altitude climbing stage or used individually during the cruising stage. The coreless axial flux PM (CAFPM) motor unit consists of two Halbach array PM rotors, two stators, and an integrated cooling plate to enable high efficiency at maximal current density. The stator DC-excited synchronous (SDCES) motor unit operates using AC 3-phase and DC stator windings employing concentrated non-overlapping toroidal coils with a reluctance consequent-pole rotor. Both units have two stator modules which are independently excited and controlled, allowing for continued propulsion under partial system deterioration. Combining both units takes advantage of the high specific power and efficiency of the CAFPM due to the Halbach array and cooling potential and the fault tolerance of the SDCES, with no potential for demagnetization and separate excitation.

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KW - modularization

KW - permanent magnets

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Lewis DD, Badewa OA, Mohammadi A, Vatani M, Ionel DM. Fault Tolerant Electric Machine Concept for Aircraft Propulsion with PM Rotor and DC Current Stator Dual-Stage Excitation. In 12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023. 2023. p. 607-611. (12th IEEE International Conference on Renewable Energy Research and Applications, ICRERA 2023). doi: 10.1109/ICRERA59003.2023.10269383

Fault Tolerant Electric Machine Concept for Aircraft Propulsion with PM Rotor and DC Current Stator Dual-Stage Excitation

Abstract

Publication series

Conference

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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