Patent ID: 7545070
Filing Date: 2009-06-09
Classification: H02K,H02P

Abstract:
1. A commutator motor operable with at least one of series excitation and shunt excitation for use as a drive motor of washing machine, the motor comprising a stator having an even number of poles, on each of which a plurality of field windings which each have a starting point and an end point are wound one over the other, the field windings being connected in a parallel arrangement, with a field winding of one pole and the field winding which is situated opposite the field winding symmetrically with respect to the respective plane of symmetry of the pole pair having an identical number of turns and forming one field winding group, wherein the starting points of the field windings of one field winding group are connected to one another, and the end points of the field windings of the same field winding group are connected to one another, the field winding groups being connected in a series arrangement and including a plurality of motor control electrical connections for selectively accessing either one or multiple field winding groups for motor speed control.