发明申请
US20050253479A1 Flux modifier for a permanent magnet brush-type motor using wound field coils combined with permanent magnets 有权
用于永久磁铁刷式电动机的磁通调节器,其使用与永久磁铁组合的伤口场线圈

Flux modifier for a permanent magnet brush-type motor using wound field coils combined with permanent magnets
摘要:
A stator and armature assembly 12 is provided for a permanent magnet DC motor. The assembly includes an armature 13 having a lamination core 14 and windings 15, and a stator structure 16 associated 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 magnet 22 providing a certain flux, and at least one wound core structure 17 having a core 18 and a coil 19 wound 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 structure 16 can be increased or decreased relative to the certain flux. In this way a motor can operate at different speeds.
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