Commutator motor having a number of field winding groups

Details Commutator motor having a number of field winding groups Commutator motor having a number of field winding groups

2005-04-29

2009-06-09

Tamai, Karl I (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S180000, C310S07500D, C318S244000, C318S252000, C388S826000

Reexamination Certificate

active

07545070

ABSTRACT:
A commutator motor, which has a series excitation or shunt excitation and which, in particular, is suited for use as a drive motor for a washing drum of a laundry treatment device. The stator of a commutator motor of this type has a number of field winding groups with field windings that are arranged symmetric to the plane of symmetry of the pair of poles and whose starting points and end points are connected to one another. In order to operate the commutator motor in a number of rotational speed ranges, the field winding groups are individually or jointly activated by a control device.

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