Deep-sea oil-filled motor the is filled with oil in the air gap to balance the seawater pressure, which leads to a different heat dissipation way from normal motors. In this paper, the lumped-parameter thermal model combining with CFD model is built for the thermal analysis of a deep-sea oil-filled motor to increase computation efficiency. In the lumped-parameter thermal model, viscous losses caused by oil are taken into account. The CFD model is used to obtain thermal convection coefficient at different motor the speeds, by which we fit curves to show the relationship between motor the speed and convection coefficient. And the convection thermal resistance is calculated by the thermal convection coefficient obtained by the fitted curve. Furthermore, The CFD model integrates a UDF (User Defined Function) to reflect the oil viscosity variation with temperature fluctuation. The accuracy of the proposed lumped-parameter model is demonstrated by comparing its result with that from the CFD model at 5000rpm.


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    Title :

    Thermal analysis of deep-sea oil-filled motor using lumped-parameter thermal model and CFD


    Contributors:
    Wu, Kangwen (author) / Cai, Lingfeng (author) / Zhang, Jian (author) / Fang, Youtong (author) / Wang, Yongmao (author)


    Publication date :

    2022-10-28


    Size :

    854230 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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