Solar Plane Propulsion Motors With Precompressed Aluminum Stator Windings

James Widmer, Christopher M Spargo, Glynn J. Atkinson, Barrie C. Mecrow

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

This paper reports a propulsion motor for a solar-powered aircraft. The motor uses precompressed aluminum stator windings, with a fill factor of greater than 75%, in a permanent magnet synchronous machine. The motor performance is compared empirically to an identical machine with conventionally wound copper windings. It is shown that there are many advantages to using compressed aluminum windings in terms of weight reduction, thermal improvement, and lower cost, for the same loss and electromagnetic performance, provided a sufficiently high slot fill factor can be achieved. The design and manufacture of the compressed coils is also discussed. A modular stator arrangement is used, in the form of a solid coreback with keyed teeth to allow easy assembly of the compressed windings. It is noted that the electromagnetic performance of the machine is unaffected by the modular nature of the magnetic core. Two prototype motors, one wound with conventional copper and the other with precompressed aluminum windings, are constructed and tested.
Original languageEnglish
Pages (from-to)681 - 688
Number of pages8
JournalIEEE Transactions on Energy Conversion
Volume29
Issue number3
Early online date18 Apr 2014
DOIs
Publication statusPublished - 1 Sep 2014
Externally publishedYes

Fingerprint

Propulsion
Stators
Aluminum
Copper
Magnetic cores
Permanent magnets
Aircraft
Costs

Bibliographical note

© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keywords

  • Aerospace
  • aluminum windings
  • compressed windings
  • electric motor
  • fill factor
  • high efficiency
  • solar plane

Cite this

Solar Plane Propulsion Motors With Precompressed Aluminum Stator Windings. / Widmer, James; Spargo, Christopher M; Atkinson, Glynn J. ; Mecrow, Barrie C. .

In: IEEE Transactions on Energy Conversion, Vol. 29, No. 3, 01.09.2014, p. 681 - 688.

Research output: Contribution to journalArticle

Widmer, James ; Spargo, Christopher M ; Atkinson, Glynn J. ; Mecrow, Barrie C. . / Solar Plane Propulsion Motors With Precompressed Aluminum Stator Windings. In: IEEE Transactions on Energy Conversion. 2014 ; Vol. 29, No. 3. pp. 681 - 688.
@article{d8e4c4ddf47a4afbbae3a80aa0ae5c5f,
title = "Solar Plane Propulsion Motors With Precompressed Aluminum Stator Windings",
abstract = "This paper reports a propulsion motor for a solar-powered aircraft. The motor uses precompressed aluminum stator windings, with a fill factor of greater than 75{\%}, in a permanent magnet synchronous machine. The motor performance is compared empirically to an identical machine with conventionally wound copper windings. It is shown that there are many advantages to using compressed aluminum windings in terms of weight reduction, thermal improvement, and lower cost, for the same loss and electromagnetic performance, provided a sufficiently high slot fill factor can be achieved. The design and manufacture of the compressed coils is also discussed. A modular stator arrangement is used, in the form of a solid coreback with keyed teeth to allow easy assembly of the compressed windings. It is noted that the electromagnetic performance of the machine is unaffected by the modular nature of the magnetic core. Two prototype motors, one wound with conventional copper and the other with precompressed aluminum windings, are constructed and tested.",
keywords = "Aerospace, aluminum windings, compressed windings, electric motor, fill factor, high efficiency, solar plane",
author = "James Widmer and Spargo, {Christopher M} and Atkinson, {Glynn J.} and Mecrow, {Barrie C.}",
note = "{\circledC} 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.",
year = "2014",
month = "9",
day = "1",
doi = "10.1109/TEC.2014.2313642",
language = "English",
volume = "29",
pages = "681 -- 688",
journal = "IEEE Transactions on Energy Conversion",
issn = "0885-8969",
publisher = "Institute of Electrical and Electronics Engineers",
number = "3",

}

TY - JOUR

T1 - Solar Plane Propulsion Motors With Precompressed Aluminum Stator Windings

AU - Widmer, James

AU - Spargo, Christopher M

AU - Atkinson, Glynn J.

AU - Mecrow, Barrie C.

N1 - © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

PY - 2014/9/1

Y1 - 2014/9/1

N2 - This paper reports a propulsion motor for a solar-powered aircraft. The motor uses precompressed aluminum stator windings, with a fill factor of greater than 75%, in a permanent magnet synchronous machine. The motor performance is compared empirically to an identical machine with conventionally wound copper windings. It is shown that there are many advantages to using compressed aluminum windings in terms of weight reduction, thermal improvement, and lower cost, for the same loss and electromagnetic performance, provided a sufficiently high slot fill factor can be achieved. The design and manufacture of the compressed coils is also discussed. A modular stator arrangement is used, in the form of a solid coreback with keyed teeth to allow easy assembly of the compressed windings. It is noted that the electromagnetic performance of the machine is unaffected by the modular nature of the magnetic core. Two prototype motors, one wound with conventional copper and the other with precompressed aluminum windings, are constructed and tested.

AB - This paper reports a propulsion motor for a solar-powered aircraft. The motor uses precompressed aluminum stator windings, with a fill factor of greater than 75%, in a permanent magnet synchronous machine. The motor performance is compared empirically to an identical machine with conventionally wound copper windings. It is shown that there are many advantages to using compressed aluminum windings in terms of weight reduction, thermal improvement, and lower cost, for the same loss and electromagnetic performance, provided a sufficiently high slot fill factor can be achieved. The design and manufacture of the compressed coils is also discussed. A modular stator arrangement is used, in the form of a solid coreback with keyed teeth to allow easy assembly of the compressed windings. It is noted that the electromagnetic performance of the machine is unaffected by the modular nature of the magnetic core. Two prototype motors, one wound with conventional copper and the other with precompressed aluminum windings, are constructed and tested.

KW - Aerospace

KW - aluminum windings

KW - compressed windings

KW - electric motor

KW - fill factor

KW - high efficiency

KW - solar plane

U2 - 10.1109/TEC.2014.2313642

DO - 10.1109/TEC.2014.2313642

M3 - Article

VL - 29

SP - 681

EP - 688

JO - IEEE Transactions on Energy Conversion

JF - IEEE Transactions on Energy Conversion

SN - 0885-8969

IS - 3

ER -