Major Difference between Progressive and Retrogressive Windings

Progressive Winding: If the starting end of the loop is connected to the first commutator segment and ending end is connected to that commutator segment that is located next to the previous one, then it is progressive winding.

Retrogressive Winding: If the ending end is connected to the commutator segment that is behind the previous one, then that is retrogressive winding.

The image below explains the theory on three commutator segments using a brown coloured loop.

major-difference-between-progressive-and-retrogressive-windings

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