A1 Journal article (refereed), original research

Direct Liquid Cooling Method Verified With a Permanent-Magnet Traction Motor in a Bus


Open Access publication

Publication Details
Authors: Lindh Pia, Petrov Ilya, Pyrhönen Juha, Scherman Eero, Niemelä Markku, Immonen Paula
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Publication year: 2019
Language: English
Related Journal or Series Information: IEEE Transactions on Industry Applications
Volume number: 55
Issue number: 4
Start page: 4183
End page: 4191
Number of pages: 9
ISSN: 0093-9994
eISSN: 1939-9367
JUFO-Level of this publication: 2
Open Access: Open Access publication
Location of the parallel saved publication: http://urn.fi/URN:NBN:fi-fe2019091127851

Abstract

Direct liquid cooling (DLC) of electrical
machine windings is a clearly effectual cooling method for high-torque and high-power-density
applications needed, especially, in heavy vehicles. Usually, in electric vehicles,
the stator copper winding losses are the most dominating losses during the
accelerating or decelerating (recuperation) modes, and therefore, traditional windings
may heat up significantly during high-torque periods. Removing the heat
directly from the winding in which most of the heat is generated, allows the
most straightforward and effective way of cooling. This paper investigates the
feasibility of the direct liquid cooling in a radial-flux permanent-magnet traction
motor. This case provides experimental information of the behavior of the
direct liquid cooling of the windings. The prototype motor equipped with directly
liquid-cooled windings is installed in an electric bus so that typical bus load
cycles can be tested.


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Last updated on 2020-20-03 at 10:03