D.C MACHINES

PREPARED BY EE IIT, Kharagpur                     Contributors:

Dr.T.K. Bhattacharya,
Prof. N.K. De,Prof.
G.D.Ray                                                                                                         


Goals of the lesson
In this lesson, important constructional features of a D.C machine are presented along with a discussion on D.C armature winding.

Key Words: Field winding, armature winding, commutator segments & brush arrangement.
After going through this section students will have clear ideas about the followings:
• The function of commutator & brush in a D.C Machine.
• Double layer winding.
• Coil span & commutator pitch.
• Lap & wave winding and number of armature parallel paths.

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