What is parallel path in dc machine?

This describes the way the machine's armature conductors are connected relative to each other and to the number of poles. The two basic ways of connecting these conductors are called 'lap' and 'wave', but it gets more complicated, because these, in turn, can be connected 'simplex', 'duplex', 'triplex', etc.

For lap windings, if there are p poles, then for:

• simplex:

  p

• duplex:

  2p

• triplex:

  3p

• etc.

For wave windings, the number of parallel paths are:

• simplex:

  1 x 2

• duplex:

  2 x 2

• triplex:

  3x 2

• etc.

So, for a triplex lap winding machine with six poles, the number of parallel paths will be:

3p =3 x 6 = 18 parallel paths.