Starting from 2011, in order to reduce electricity consumption and carbon dioxide emissions, the European MEPS (Minimum Energy Performance Standard) will impose minimum efficiency values for electric motors introduced into the European market. The new European standard requirements will impose non-trivial efforts to manufacturers, in particular for small and medium-sized producers. In this paper, the axial lengthening of the magnetic core is considered as an effective solution to improve the induction motor efficiency class. In fact, this design solution does not require changing stator and rotor laminations, and it can be considered as a #x201C;No Tooling Cost #x201D; (NTC) solution to improve the rated efficiency. Starting from standard-efficiency total enclosed fan cooled machines, one size has been selected and a #x201C;lengthened #x201D; motor prototype has been designed and analyzed using a very fast and reliable design procedure based on a coupled analytical-finite element approach. The experimental results confirm the accuracy of the proposed design method and validate the proposed NTC solution to get higher efficiency induction motors.


    Access

    Download


    Export, share and cite



    Title :

    Core axial lengthening as effective solution to improve the induction motor efficiency classes


    Contributors:

    Publication date :

    2011-01-01



    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629




    Freeboard and lengthening of coastal motor cargo ships

    Lehmann, G. | Engineering Index Backfile | 1937


    Axial-Flux Electromagnetic Differential Induction Motor

    Carichi, F. / Crecimbini, F. / Santini, E. | Tema Archive | 1995


    Lengthening "Kronprinsessan Ingrid"

    Engineering Index Backfile | 1951


    Lengthening no problem

    Engineering Index Backfile | 1938