Tech Forum

April 2010

DC Motors

How does an interpole winding work in a DC motor?

#41010
Michael Coy
Indianapolis, IA

Answers

from: www.reliance.com/mtr/mtrthrmn.htm Basic Motor Theory

Interpoles
Interpoles are similar to the main field poles and located on the yoke between the main field poles. They have windings in series with the armature winding. Interpoles have the function of reducing the armature reaction effect in the commutating zone. They eliminate the need to shift the brush assembly.

Mark Peterson
Plymouth, MN