Electrical Machines, 2nd Edition

Appendix C

MMF of Distributed Winding

The distributed winding in an armature is used in most of the rotating machines. Due to the flow of current in different coils which forms the armature winding, a magnetic field is produced having the same number of poles as the field winding.

The magnetic field’s pattern along the air-gap periphery, which is set up by the distributed winding, is dependent on the following:

1. winding arrangement,
2. nature of the current flowing through the winding and
3. the configuration of the magnetic circuit.

The distribution of air-gap flux in the machine helps to determine the following:

1. the wave and magnitude of the generated emf and
2. the electrical torque.

The production of mmf by distributed winding in the slots along ...