Model of air cooled windings for traction machine
(2018) 23rd International Conference on Electrical Machines, ICEM 2018 p.1278-1284- Abstract
This article presents a concept of direct cooled windings for electrical machines, pumping air through hollow rectangular copper windings. The thermal constraints pose a serious limitation in the performance of many applications of electrical machines, not least in electrical vehicles. The difference between temporary maximum output and continuous output is often substantial. This difference can be decreased with effective cooling methods, such as direct cooling of the windings. The concept of direct cooled windings are modeled in a empirical-lumped parameter model. The model is described in the article and experimentally validated through experiments. Finally the results of the model regarding optimized dimensions for electrical... (More)
This article presents a concept of direct cooled windings for electrical machines, pumping air through hollow rectangular copper windings. The thermal constraints pose a serious limitation in the performance of many applications of electrical machines, not least in electrical vehicles. The difference between temporary maximum output and continuous output is often substantial. This difference can be decreased with effective cooling methods, such as direct cooling of the windings. The concept of direct cooled windings are modeled in a empirical-lumped parameter model. The model is described in the article and experimentally validated through experiments. Finally the results of the model regarding optimized dimensions for electrical machines are presented and discussed. The results show that a current density of 16 A/mm2(insulation and cooling channels accounted for) can be achieved. 18 A/mm2is achievable with other dimensions, but with lower efficiency. The pump power for the coolant air is similar in magnitude to the amount of resistive losses.
(Less)
- author
- Estenlund, Samuel LU
- organization
- publishing date
- 2018-10-25
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Air cooling, Direct cooling, Electric vehicle, Electrical machine, Fluid dynamics, Heat transfer, Rectangular windings
- host publication
- Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018
- article number
- 8507016
- pages
- 7 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 23rd International Conference on Electrical Machines, ICEM 2018
- conference location
- Alexandroupoli, Greece
- conference dates
- 2018-09-03 - 2018-09-06
- external identifiers
-
- scopus:85057180516
- ISBN
- 9781538624777
- DOI
- 10.1109/ICELMACH.2018.8507016
- language
- English
- LU publication?
- yes
- id
- 99ee58e8-ba69-44ec-bb5c-7420d53798ea
- date added to LUP
- 2018-12-04 09:51:47
- date last changed
- 2022-04-25 19:34:57
@inproceedings{99ee58e8-ba69-44ec-bb5c-7420d53798ea, abstract = {{<p>This article presents a concept of direct cooled windings for electrical machines, pumping air through hollow rectangular copper windings. The thermal constraints pose a serious limitation in the performance of many applications of electrical machines, not least in electrical vehicles. The difference between temporary maximum output and continuous output is often substantial. This difference can be decreased with effective cooling methods, such as direct cooling of the windings. The concept of direct cooled windings are modeled in a empirical-lumped parameter model. The model is described in the article and experimentally validated through experiments. Finally the results of the model regarding optimized dimensions for electrical machines are presented and discussed. The results show that a current density of 16 A/mm<sup>2</sup>(insulation and cooling channels accounted for) can be achieved. 18 A/mm<sup>2</sup>is achievable with other dimensions, but with lower efficiency. The pump power for the coolant air is similar in magnitude to the amount of resistive losses.</p>}}, author = {{Estenlund, Samuel}}, booktitle = {{Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018}}, isbn = {{9781538624777}}, keywords = {{Air cooling; Direct cooling; Electric vehicle; Electrical machine; Fluid dynamics; Heat transfer; Rectangular windings}}, language = {{eng}}, month = {{10}}, pages = {{1278--1284}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Model of air cooled windings for traction machine}}, url = {{http://dx.doi.org/10.1109/ICELMACH.2018.8507016}}, doi = {{10.1109/ICELMACH.2018.8507016}}, year = {{2018}}, }