Flux modifier for a permanent magnet brush-type motor using...

Details Flux modifier for a permanent magnet brush-type motor using... Flux modifier for a permanent magnet brush-type motor using...

2006-02-07

2006-02-07

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S194000, C318S254100

Reexamination Certificate

active

06995490

ABSTRACT:
A stator and armature assembly12is provided for a permanent magnet DC motor. The assembly includes an armature13having a lamination core14and windings15, and a stator structure16associated with the armature. The armature is constructed and arranged to rotate with respect to the stator structure. The stator structure includes at least one permanent magnet22providing a certain flux, and at least one wound core structure17having a core18and a coil19wound about the core so as to define an alternate pole with respect to the permanent magnet. When current to the coil is controlled, flux of the stator structure16can be increased or decreased relative to the certain flux. In this way a motor can operate at different speeds.

REFERENCES:
patent: 5389862 (1995-02-01), Tominaga
patent: 6342746 (2002-01-01), Flynn
patent: 6563248 (2003-05-01), Fujita
patent: 6838848 (2005-01-01), Shindo

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