Torque and Power Capabilities of Coreless Axial Flux Machines with Surface PMs and Halbach Array Rotors

Yaser Chulaee; Donovin Lewis; Matin Vatani; John F. Eastham; Dan M. Ionel

doi:10.1109/IEMDC55163.2023.10239021

Torque and Power Capabilities of Coreless Axial Flux Machines with Surface PMs and Halbach Array Rotors

Yaser Chulaee, Donovin Lewis, Matin Vatani, John F. Eastham, Dan M. Ionel

Department of Electronic & Electrical Engineering

University of Kentucky

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

12 Citations (SciVal)

Abstract

This paper investigates employing a Halbach PM rotor array to increase torque and power density within coreless axial flux permanent magnet (AFPM) machines. Analytical and 2/3-dimensional finite element analysis (FEA) methods are developed to study torque and power capabilities within an example double-rotor, single-stator coreless AFPM machine with a PCB stator. Compared to a surface PM topology of the same mass and volume, employing a Halbach array increases torque density by as much as 30% through increased airgap flux density amplitude. Multiple parametric studies are performed to explore methods of increasing torque and power density while employing Halbach arrays combined with enhanced cooling methods and coil transposition to minimize associated losses. A design procedure is also developed that relies on the advantages of coreless AFPM machines controlled by ultra-high-frequency SiC-based drive systems to maximize potential torque gain.

Original language	English
Title of host publication	2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023
Place of Publication	U. S. A.
Publisher	IEEE
ISBN (Electronic)	9798350398991
DOIs	https://doi.org/10.1109/IEMDC55163.2023.10239021
Publication status	Published - 6 Sept 2023
Event	2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023 - San Francisco, USA United States Duration: 15 May 2023 → 18 May 2023

Publication series

Name	2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023

Conference

Conference	2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023
Country/Territory	USA United States
City	San Francisco
Period	15/05/23 → 18/05/23

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This paper is based upon work supported by the National Science Foundation (NSF) under Award No. #1809876. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the NSF. The support of AN-SYS Inc., and University of Kentucky, the L. Stanley Pigman Chair in Power Endowment is also gratefully acknowledged.

Funding

This paper is based upon work supported by the National Science Foundation (NSF) under Award No. #1809876. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the NSF. The support of ANSYS Inc., and University of Kentucky, the L. Stanley Pigman Chair in Power Endowment is also gratefully acknowledged.

Keywords

AFPM machines
Axial-flux
coreless machines
eddy current
FEA
Halbach-array
PCB stator
permanent-magnet machines

ASJC Scopus subject areas

Electrical and Electronic Engineering
Mechanical Engineering

Access to Document

10.1109/IEMDC55163.2023.10239021

Cite this

Chulaee, Y., Lewis, D., Vatani, M., Eastham, J. F., & Ionel, D. M. (2023). Torque and Power Capabilities of Coreless Axial Flux Machines with Surface PMs and Halbach Array Rotors. In 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023 (2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023). IEEE. https://doi.org/10.1109/IEMDC55163.2023.10239021

Torque and Power Capabilities of Coreless Axial Flux Machines with Surface PMs and Halbach Array Rotors. / Chulaee, Yaser; Lewis, Donovin; Vatani, Matin et al.
2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023. U. S. A.: IEEE, 2023. (2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023).

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Chulaee, Y, Lewis, D, Vatani, M, Eastham, JF & Ionel, DM 2023, Torque and Power Capabilities of Coreless Axial Flux Machines with Surface PMs and Halbach Array Rotors. in 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023. 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023, IEEE, U. S. A., 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023, San Francisco, USA United States, 15/05/23. https://doi.org/10.1109/IEMDC55163.2023.10239021

Chulaee Y, Lewis D, Vatani M, Eastham JF, Ionel DM. Torque and Power Capabilities of Coreless Axial Flux Machines with Surface PMs and Halbach Array Rotors. In 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023. U. S. A.: IEEE. 2023. (2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023). doi: 10.1109/IEMDC55163.2023.10239021

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abstract = "This paper investigates employing a Halbach PM rotor array to increase torque and power density within coreless axial flux permanent magnet (AFPM) machines. Analytical and 2/3-dimensional finite element analysis (FEA) methods are developed to study torque and power capabilities within an example double-rotor, single-stator coreless AFPM machine with a PCB stator. Compared to a surface PM topology of the same mass and volume, employing a Halbach array increases torque density by as much as 30% through increased airgap flux density amplitude. Multiple parametric studies are performed to explore methods of increasing torque and power density while employing Halbach arrays combined with enhanced cooling methods and coil transposition to minimize associated losses. A design procedure is also developed that relies on the advantages of coreless AFPM machines controlled by ultra-high-frequency SiC-based drive systems to maximize potential torque gain.",

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N2 - This paper investigates employing a Halbach PM rotor array to increase torque and power density within coreless axial flux permanent magnet (AFPM) machines. Analytical and 2/3-dimensional finite element analysis (FEA) methods are developed to study torque and power capabilities within an example double-rotor, single-stator coreless AFPM machine with a PCB stator. Compared to a surface PM topology of the same mass and volume, employing a Halbach array increases torque density by as much as 30% through increased airgap flux density amplitude. Multiple parametric studies are performed to explore methods of increasing torque and power density while employing Halbach arrays combined with enhanced cooling methods and coil transposition to minimize associated losses. A design procedure is also developed that relies on the advantages of coreless AFPM machines controlled by ultra-high-frequency SiC-based drive systems to maximize potential torque gain.

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Torque and Power Capabilities of Coreless Axial Flux Machines with Surface PMs and Halbach Array Rotors

Abstract

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Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

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