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

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

25 Scopus citations

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
ISBN (Electronic)	9798350398991
DOIs	https://doi.org/10.1109/IEMDC55163.2023.10239021
State	Published - 2023
Event	2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023 - San Francisco, United States Duration: May 15 2023 → May 18 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	United States
City	San Francisco
Period	5/15/23 → 5/18/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Funding

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. 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.

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	1809876
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
University of Kentucky
ANSYS

Keywords

AFPM machines
Axial-flux
FEA
Halbach-array
PCB stator
coreless machines
eddy current
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). https://doi.org/10.1109/IEMDC55163.2023.10239021

@inproceedings{ab8ca75f60134cebb3d58d4740b4051b,

title = "Torque and Power Capabilities of Coreless Axial Flux Machines with Surface PMs and Halbach Array Rotors",

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.",

keywords = "AFPM machines, Axial-flux, FEA, Halbach-array, PCB stator, coreless machines, eddy current, permanent-magnet machines",

author = "Yaser Chulaee and Donovin Lewis and Matin Vatani and Eastham, \{John F.\} and Ionel, \{Dan M.\}",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023 ; Conference date: 15-05-2023 Through 18-05-2023",

year = "2023",

doi = "10.1109/IEMDC55163.2023.10239021",

language = "English",

series = "2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023",

booktitle = "2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023",

}

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, 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023, San Francisco, United States, 5/15/23. 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. 2023. (2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023).

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

TY - GEN

T1 - Torque and Power Capabilities of Coreless Axial Flux Machines with Surface PMs and Halbach Array Rotors

AU - Chulaee, Yaser

AU - Lewis, Donovin

AU - Vatani, Matin

AU - Eastham, John F.

AU - Ionel, Dan M.

PY - 2023

Y1 - 2023

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.

AB - 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.

KW - AFPM machines

KW - Axial-flux

KW - FEA

KW - Halbach-array

KW - PCB stator

KW - coreless machines

KW - eddy current

KW - permanent-magnet machines

UR - http://www.scopus.com/inward/record.url?scp=85172718406&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85172718406&partnerID=8YFLogxK

U2 - 10.1109/IEMDC55163.2023.10239021

DO - 10.1109/IEMDC55163.2023.10239021

M3 - Conference contribution

AN - SCOPUS:85172718406

T3 - 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023

BT - 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023

T2 - 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023

Y2 - 15 May 2023 through 18 May 2023

ER -

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

Abstract

Publication series

Conference

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this