Assessment of cooling integration with direct cooled windings
Reinap, Avo LU ; Gabassi, Michael ; Alakula, Mats LU
and Andersson, Mats
LU
(2018)
2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2018
- Abstract
This paper presents and assesses the cooling integration of medium size electrical machines with distributed hair-pin type of windings. By introducing a hollow or profiled conductor the generated heat can be removed right where it is created. The cooling duct in conductor that can be connected either to series or parallel cooling flows increases DC resistance up to 1.5 times when comparing commercially available small hollow conductors. Any added heating power is compensated by cooling and added pumping power that can bring the continuous operation to a new peak level though at lower efficiency. This article targets production oriented calculations and experiments for conjugate heat transfer analysis where the advantage of direct cooled... (More)
This paper presents and assesses the cooling integration of medium size electrical machines with distributed hair-pin type of windings. By introducing a hollow or profiled conductor the generated heat can be removed right where it is created. The cooling duct in conductor that can be connected either to series or parallel cooling flows increases DC resistance up to 1.5 times when comparing commercially available small hollow conductors. Any added heating power is compensated by cooling and added pumping power that can bring the continuous operation to a new peak level though at lower efficiency. This article targets production oriented calculations and experiments for conjugate heat transfer analysis where the advantage of direct cooled hair-pin type of windings is compared to more conventional rectangular solid conductors. A machine design, which is suitable for traction application, is selected to investigate the power losses in the machine winding and experimental work on direct cooled test cells is used to support the thermal design and evaluate the benefits of the cooling integration.
(Less)
- author
- Reinap, Avo
LU
; Gabassi, Michael
; Alakula, Mats
LU
and Andersson, Mats
LU
- organization
- publishing date
- 2018
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- conjugate heat transfer, cooling integration, distributed windings, finite element method, hollow conductors
- host publication
- 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2018
- article number
- 8607655
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2018
- conference location
- Nottingham, United Kingdom
- conference dates
- 2018-11-07 - 2018-11-09
- external identifiers
-
- scopus:85062070769
- ISBN
- 9781538641927
- DOI
- 10.1109/ESARS-ITEC.2018.8607655
- language
- English
- LU publication?
- yes
- id
- b05e5b41-b316-48aa-97ba-5634a8336768
- date added to LUP
- 2019-03-06 13:59:40
- date last changed
- 2022-11-30 03:56:53
@inproceedings{b05e5b41-b316-48aa-97ba-5634a8336768,
abstract = {{<p>This paper presents and assesses the cooling integration of medium size electrical machines with distributed hair-pin type of windings. By introducing a hollow or profiled conductor the generated heat can be removed right where it is created. The cooling duct in conductor that can be connected either to series or parallel cooling flows increases DC resistance up to 1.5 times when comparing commercially available small hollow conductors. Any added heating power is compensated by cooling and added pumping power that can bring the continuous operation to a new peak level though at lower efficiency. This article targets production oriented calculations and experiments for conjugate heat transfer analysis where the advantage of direct cooled hair-pin type of windings is compared to more conventional rectangular solid conductors. A machine design, which is suitable for traction application, is selected to investigate the power losses in the machine winding and experimental work on direct cooled test cells is used to support the thermal design and evaluate the benefits of the cooling integration.</p>}},
author = {{Reinap, Avo and Gabassi, Michael and Alakula, Mats and Andersson, Mats}},
booktitle = {{2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference, ESARS-ITEC 2018}},
isbn = {{9781538641927}},
keywords = {{conjugate heat transfer; cooling integration; distributed windings; finite element method; hollow conductors}},
language = {{eng}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{Assessment of cooling integration with direct cooled windings}},
url = {{http://dx.doi.org/10.1109/ESARS-ITEC.2018.8607655}},
doi = {{10.1109/ESARS-ITEC.2018.8607655}},
year = {{2018}},
}