Abstract This paper analyses the eddy current loss in Homopolar magnetic bearings with laminated rotor cores produced by the high speed rotation in order to reduce the power loss for the aerospace applications. The analytical model of rotational power loss is proposed in Homopolar magnetic bearings with laminated rotor cores considering the magnetic circuit difference between Homopolar and Heteropolar magnetic bearings. Therefore, the eddy current power loss can be calculated accurately using the analytical model by magnetic field solutions according to the distribution of magnetic fields around the pole surface and boundary conditions at the surface of the rotor cores. The measurement method of rotational power loss in Homopolar magnetic bearing is proposed, and the results of the theoretical analysis are verified by experiments in the prototype MSCMG. The experimental results show the correctness of calculation results.

    Highlights We model the analytical model of eddy current loss for Homopolar magnetic bearings. The MSCMG prototype is manufactured with Homopolar magnetic bearings. We propose the measurement method of rotational losses in MSCMG prototype. The theoretical analysis is verified by experiments in the MSCMG prototype.


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    Title :

    Analysis and experiment of eddy current loss in Homopolar magnetic bearings with laminated rotor cores


    Contributors:
    Jinji, Sun (author) / Dong, Chen (author)

    Published in:

    Acta Astronautica ; 89 ; 229-235


    Publication date :

    2013-04-21


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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