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US 5,296,773 AGranted
Composite rotor for a synchronous reluctance machine
AssigneeGeneral Motors Corporation
InventorsAhmed M. El-Antably, Donald Klemen
Life of this patent
Estimating the term…
Abstract
A rotor assembly for a synchronous reluctance dynamo/motor machine has a plurality of axial laminations comprised of alternate magnetic and non-magnetic materials. The rotor has an end cap on each axial end which engages the stepped axial ends of the laminations.
Claims12
A composite rotor assembly for a synchronous reluctance machine, said composite rotor assembly comprising;
- a supporting shaft member;
- a core carried on said supporting shaft member;
- said core having a body with equiangularly spaced, radially extending arm means defining axially extending supporting cavities between adjacent arm means;
- a plurality of axially extending magnetic laminations disposed in the cavities;
- a plurality of axially extending non-magnetic laminations disposed in the cavities and being interspersed with the magnetic laminations;
- said core and said laminations defining a plurality of cylindrical end surfaces with a radially inner end surface having a greater axial length than a adjacent radially outer end surface;
- and,
- end cap means secured in covering relation with each end surface and including surface mating with and being complementary to the end surfaces defined by said core and laminations.
5 more elements
A composite rotor assembly for a synchronous reluctance machine, the composite rotor assembly comprising:
- a supporting shaft member;
- a core supported by said shaft member;
- said core having a body with equiangularly spaced, radially extending arm means defining axially extending supporting cavities between adjacent arm means;
- a plurality of axially extending magnetic laminations disposed in the cavities;
- a plurality of axially extending non-magnetic laminations disposed in the cavities and being interspersed with the magnetic laminations;
- a rotor bar disposed axially adjacent a radially outermost lamination in each cavity defining a portion of an outer surface of the rotor assembly;
- means for securing said rotor bars to said shaft member;
- said core laminations and said rotor bars defining a plurality of circumferentially stepped end surfaces with a radially inner step surface having a greater axial length than an adjacent radially outer step surface;
- and,
- end cap means secured in covering relation with each end surface and including surface means mating with, and being complementary to, said circumferentially stepped end surfaces defined by said core and said laminations.
7 more elements
Dependencies are inferred from the claim text.