Oil Spray Cooling with Hairpin Windings in High-Performance Electric Vehicle Motors

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openAccess

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A4 Artikkeli konferenssijulkaisussa

Date

2021-03-22

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Language

en

Pages

5

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Proceedings of 2021 28th International Workshop on Electric Drives

Abstract

This paper presents a survey about implementing hairpin winding with an oil spray cooling system on the new generation of electrical vehicle (EV) motors as an option to produce high power density, high efficiency, cost-effectiveness, lightweight, reliable EV motors. It provides the advantages and drawbacks of this rectangular winding compared to random winding and considers the hairpin winding production aspects. According to the high AC losses of this configuration, the paper considers two conventional approaches for calculating these losses with their advantages and drawback. Then it proposes the novel hybrid FEA method for calculating the AC copper losses to overcome the weaknesses of analytical and numerical methods. Finally, it provides a holistic view related to the oil spray cooling of the electrical machine and points the future work associated with this cooling method

Description

Funding Information: This work has been supported by the European Regional Development Fund within the Activity 1.1.1.2 “Post-doctoral Research Aid” of the Specific Aid Objective 1.1.1 “To increase the research and innovative capacity of scientific institutions of Latvia and the ability to attract external financing, investing in human resources and infrastructure” of the Operational Programme “Growth and Employment” (No.1.1.1.2/VIAA/3/19/501). Publisher Copyright: © 2021 IEEE. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

Keywords

electric vehicle, electrical motors, hairpin winding, spray cooling, thermal management

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Citation

Ghahfarokhi, P S, Podgornovs, A, Kallaste, A, Vaimann, T, Belahcen, A & Cardoso, A J M 2021, Oil Spray Cooling with Hairpin Windings in High-Performance Electric Vehicle Motors . in Proceedings of 2021 28th International Workshop on Electric Drives : Improving Reliability of Electric Drives, IWED 2021 ., 9376390, IEEE, International Workshop on Electric Drives, Virtual, Online, 27/01/2021 . https://doi.org/10.1109/IWED52055.2021.9376390