In electrical engineering, an armature is the power-producing component of an electric machine. Armature reaction is effect of armature flux on main field flux. The current in the armature winding is known as the armature current.
The location of the winding depends upon the type of machine. The armature windings of dc motors are . Brushes should be placed on M.
So, due to armature reaction, it is hard to determine the exact position of M. For a loaded dc generator, MNA will be shifted in the direction of the rotation. On the other han for a loaded dc motor , MNA will be shifted in the . Laminated armature cores experience fewer eddy currents and lower eddy current loss than solid cores. Consider the image on the previous page. In the diagram to the right, you can see three. Design of armature for dc motor.
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Niel, The biggest difference between the armature windings or more correctly rotor windings (They are not normally called armature windings in AC motors) is how the windings are electrically connected to the outside world.