Flux modifier for a permanent magnet brush-type motor using wound field coils combined with permanent magnets

A stator structure for a permanent magnet DC motor, the stator structure comprising:

• at least one permanent magnet defining a pole and providing a certain flux, and
• at least one wound core structure having a core and a coil wound about the core so as to define an alternate pole with respect to the permanent magnet such that controlling current to the coil increases or decreases flux in the stator structure relative to the certain flux,
• wherein the core includes a base and a bobbin member extending from the base, the bobbin member and base being constructed and arranged to define a pocket for receiving a portion of the coil,
• wherein the core is of generally the same geometric size as the permanent magnet.

A permanent magnet DC motor, the motor including:

• armature having a lamination core and windings, and
• a stator structure associated with the armature, the armature being constructed and arranged to rotate with respect to the stator structure, the stator structure comprising:
• at least two permanent magnets of the same polarity and providing a certain flux, and
• at least two wound core structures of the same polarity, each wound core structure having a core and a coil wound about the core, the wound core structures defining alternate poles with respect to the permanent magnets such that controlling current to the coils increases or decreases flux in the stator structure relative to the certain flux.