Design and direct liquid cooling of tooth-coil windings

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Constantin Wohlers
  • Peter Juris
  • Stephan Kabelac
  • Bernd Ponick

Externe Organisationen

  • Volkswagen AG
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Details

OriginalspracheEnglisch
Seiten (von - bis)2299-2308
Seitenumfang10
FachzeitschriftElectrical Engineering
Jahrgang100
Ausgabenummer4
PublikationsstatusVeröffentlicht - 2 Juli 2018

Abstract

This paper presents the design and analysis of fractional-slot concentrated-windings for use with direct liquid cooling. To achieve considerably higher torque density than state of the art of electrical machines, recently patented cast coils that allow slot fill factors up to 90% are considered as basis for further enhancement. The sensitivity of large conductors to high losses due to current displacement as well as the implementation of direct liquid cooling of every single conductor is discussed. Two innovative coil designs are developed and compared, in consideration of current displacement using finite element methods, with basic trapezoidal cast coils. The heat dissipation capacities of the new coil designs are tested analytically as well as by measurement. Additionally, different cooling mediums are compared for their suitability for direct liquid cooling of coils. The proposed coil designs lead to possible current densities of 100Amm2 and to a reduction of the additional losses to about 50 %.

ASJC Scopus Sachgebiete

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Design and direct liquid cooling of tooth-coil windings. / Wohlers, Constantin; Juris, Peter; Kabelac, Stephan et al.
in: Electrical Engineering, Jahrgang 100, Nr. 4, 02.07.2018, S. 2299-2308.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Wohlers, C, Juris, P, Kabelac, S & Ponick, B 2018, 'Design and direct liquid cooling of tooth-coil windings', Electrical Engineering, Jg. 100, Nr. 4, S. 2299-2308. https://doi.org/10.1007/s00202-018-0704-x
Wohlers, C., Juris, P., Kabelac, S., & Ponick, B. (2018). Design and direct liquid cooling of tooth-coil windings. Electrical Engineering, 100(4), 2299-2308. https://doi.org/10.1007/s00202-018-0704-x
Wohlers C, Juris P, Kabelac S, Ponick B. Design and direct liquid cooling of tooth-coil windings. Electrical Engineering. 2018 Jul 2;100(4):2299-2308. doi: 10.1007/s00202-018-0704-x
Wohlers, Constantin ; Juris, Peter ; Kabelac, Stephan et al. / Design and direct liquid cooling of tooth-coil windings. in: Electrical Engineering. 2018 ; Jahrgang 100, Nr. 4. S. 2299-2308.
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