Design analysis of permanent magnet DC motors with differingarmature, magnet and yoke lengths


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      Views: (2007)   Date: (Publication Date: Mar 1998)   Pages: ()
    • Author:  Yegna Narayanan  S.S. Anandakumaran Nair  K.R. Narayanan  V. Dept. of Electr. Eng.  Indian Inst. of Technol.  Madras;  

    • Abstract:  Abstract A modified magnetic circuit method and a 2-D finite element procedure are presented here for the analysis of DC permanent magnet motors with differing armature, magnet and yoke lengths including nonlinear material behavior of steel and permanent magnet. A 12 V, 120 W motor is analyzed through these methods and compared with experimental results of a prototype sample. In case of finite element analysis, commutation effects and short chording of the armature winding are treated appropriately, and cogging torque and voltage ripple are predicted

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