Doubly-excited brushless alternator
OwnerVlado Ostovicinventor
Life of this patent
Estimating the term…
Abstract
An electric machine that can be used as an alternator in a vehicle has an outer and an inner stator. The outer stator has two coaxial cores shifted to each other in axial direction and separated from each other by nonmagnetic material. Both cores of the outer stator are slotted and carry the armature winding. The inner stator has a core and an axially wound field winding. The rotor assembly has two magnetic flux modifying members and a plurality of radially magnetized permanent magnets. The magnetic flux modifying members direct the flux created by the field winding into the first outer stator core. The flux created by permanent magnets goes through the second outer stator core. The field current is bi-directional, providing for a better control of induced voltage in the armature winding.
Claims2
An electrical machine comprising:
- an outer stator assembly supported by the housing, said outer stator assembly comprising two coaxially disposed magnetic cores, said cores being axially separated from each other by a nonmagnetic material member, said cores having axially-extending bores and a plurality of axially extending slots, said slots carrying a multi-phase, multi-pole armature winding, and
- an inner stator comprising an iron core and a field coil, said iron core being magnetic, said field coil being wound axially.
Dependencies are inferred from the claim text.