Single phase fully pitched winding armature reaction.

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Presentation transcript:

Single phase fully pitched winding armature reaction

Single phase fractionally pitched (chorded) winding armature reaction

A1A1 Phase pitch 120  electrical Phase pitch 120  B1B1 C2C2  a (reference) bb cc 60  A B C Total= A+B+C Three phase fully pitched winding armature reaction A2A2 B2B2 C1C1

A1A1 Phase pitch 120  electrical Phase pitch 120  B1B1 C2C2 Three phase fully pitched winding armature reaction Main factors of armature reaction effect: - Magnitude of armature current - Power factor - Degree of chording