Advanced electrical machines such as permanent magnet and switched reluctance types are very compact and have high power densities, usually 2 - 5 kW/lb. Nearly 20% of the rated power capacity is dissipated as heat within the machine. Thermal stress, deterioration of magnetic and insulation properties, and loss of power are caused by the overheating of the machine resulting from poor cooling. Because of the enclosed and rotating nature of the rotors in these machines, it becomes increasingly difficult to cool. In this paper, a thorough literature review on this subject is presented. A general description of the thermal management issues and some possible solutions are discussed. Rotating heat pipe rotor shaft and spray cooling heat exchanger solution is suggested. This study was conducted in support of the Air Force more-electric aircraft technology development.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Thermal Management Issues of Rotors in Rotating Electrical Machines


    Additional title:

    Sae Technical Papers


    Contributors:
    Beam, J.E. (author) / Leland, J.E. (author) / Ponnappan, R. (author)

    Conference:

    Aerospace Technology Conference and Exposition ; 1994



    Publication date :

    1994-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Thermal Management Issues of Rotors in Rotating Electrical Machines

    Ponnappan, R. / Leland, J. E. / Beam, J. E. et al. | British Library Conference Proceedings | 1994


    Rotating electrical machines

    Doeuff, R. / Le Doeuff, René / Zaim, Mohammed El-Hadi | TIBKAT | 2010


    Design of rotating electrical machines

    Pyrhönen, Juha / Jokinen, Tapani / Hrabovcová, Valéria | TIBKAT | 2008


    Electrical steels for rotating machines

    Beckley, Philip | TIBKAT | 2002


    Design of rotating electrical machines

    Pyrhönen, Juha / Jokinen, Tapani / Hrabovcová, Valéria | TIBKAT | 2014