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Hollow direct air cooled windings : Rotor design process

Estenlund, Samuel LU (2020) 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2020 In 2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2020 p.489-496
Abstract

This paper presents theoretical and practical analyses of four different design options for an electrically excited synchronous machine (EESM) with hollow field winding conductors for internal air cooling. This cooling concept allows for effective direct cooling of the windings.Simulations are performed for the electromagnetic evaluation of the proposed designs, while a plastic 3D printed rotor mock- up is used to validate the winding method. The electromagnetic simulation results are used to estimate the increased losses during nominal excitation, for a comparison with a hypothetical corresponding PMSM. The rotor mock-up proved to be an effective way to test winding methods and rule out design options that worked well in theory, but... (More)

This paper presents theoretical and practical analyses of four different design options for an electrically excited synchronous machine (EESM) with hollow field winding conductors for internal air cooling. This cooling concept allows for effective direct cooling of the windings.Simulations are performed for the electromagnetic evaluation of the proposed designs, while a plastic 3D printed rotor mock- up is used to validate the winding method. The electromagnetic simulation results are used to estimate the increased losses during nominal excitation, for a comparison with a hypothetical corresponding PMSM. The rotor mock-up proved to be an effective way to test winding methods and rule out design options that worked well in theory, but not in practice.Based on the theoretical and practical analyses, a conclusion is drawn on what rotor design option is most suitable for this direct cooling concept. The chosen design has separate rotor teeth assembled to the rotor yoke with dovetails.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Air cooling, Direct cooling, Electric machine, Electrically excited, Prototype, Traction
host publication
2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2020
series title
2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2020
article number
9161849
pages
8 pages
publisher
Institute of Electrical and Electronics Engineers Inc.
conference name
2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2020
conference location
Sorrento, Italy
conference dates
2020-06-24 - 2020-06-26
external identifiers
  • scopus:85091186673
ISBN
9781728170190
DOI
10.1109/SPEEDAM48782.2020.9161849
language
English
LU publication?
yes
id
9b53639c-de68-402a-8f89-5e5c329ea83b
date added to LUP
2020-10-30 11:17:05
date last changed
2020-10-31 01:19:59
@inproceedings{9b53639c-de68-402a-8f89-5e5c329ea83b,
  abstract     = {<p>This paper presents theoretical and practical analyses of four different design options for an electrically excited synchronous machine (EESM) with hollow field winding conductors for internal air cooling. This cooling concept allows for effective direct cooling of the windings.Simulations are performed for the electromagnetic evaluation of the proposed designs, while a plastic 3D printed rotor mock- up is used to validate the winding method. The electromagnetic simulation results are used to estimate the increased losses during nominal excitation, for a comparison with a hypothetical corresponding PMSM. The rotor mock-up proved to be an effective way to test winding methods and rule out design options that worked well in theory, but not in practice.Based on the theoretical and practical analyses, a conclusion is drawn on what rotor design option is most suitable for this direct cooling concept. The chosen design has separate rotor teeth assembled to the rotor yoke with dovetails. </p>},
  author       = {Estenlund, Samuel},
  booktitle    = {2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2020},
  isbn         = {9781728170190},
  language     = {eng},
  pages        = {489--496},
  publisher    = {Institute of Electrical and Electronics Engineers Inc.},
  series       = {2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM 2020},
  title        = {Hollow direct air cooled windings : Rotor design process},
  url          = {http://dx.doi.org/10.1109/SPEEDAM48782.2020.9161849},
  doi          = {10.1109/SPEEDAM48782.2020.9161849},
  year         = {2020},
}