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

10 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.

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

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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

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AU - Chulaee, Yaser

AU - Lewis, Donovin

AU - Vatani, Matin

AU - Eastham, John F.

AU - Ionel, Dan M.

PY - 2023

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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.

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

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ER -

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

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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