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

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3 Author(s)
Yegna Narayanan, S.S. ; Dept. of Electr. Eng., Indian Inst. of Technol., Madras, India ; Anandakumaran Nair, K.R. ; Narayanan, V.

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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Energy Conversion, IEEE Transactions on  (Volume:13 ,  Issue: 1 )