Sunday, 7 July 2013

Schematic diagram of a brushless dc motor

BRUSHLESS DC MOTOR

The rotor flux density distribution produced by the permanent magnets is represented by the green space vector Br. A power-processing unit supplies three-phase currents to the stator windings in such a manner that the resultant stator current space vector Is is 90o ahead of the rotor flux vector. The mmf distribution produced by the stator currents flowing in the stationary three-phase windings is equivalent to that produced by Is flowing in a single sinusoidally-distributed rotating winding whose magnetic axis lines up with Is as illustrated in this animation.




1 comment:

  1. Great Article
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