Ultra-high speed permanent magnet axial gap alternator with mult

Details Ultra-high speed permanent magnet axial gap alternator with mult Ultra-high speed permanent magnet axial gap alternator with mult

1990-03-28

1991-02-26

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310112, 310156, H02K 128, H02K 2124

Patent

active

049964577

ABSTRACT:
An ultra-high speed, axial gap alternator that can provide an output to a plurality of loads, the alternator providing magnetic isolation such that operating conditions in one load will not affect operating conditions of another load. This improved alternator uses a rotor member disposed between a pair of stator members, with magnets disposed in each of the rotor member surfaces facing the stator members. The magnets in one surface of the rotor member, which alternate in polarity, are isolated from the magnets in the other surface of the rotor member by a disk of magnetic material disposed between the two sets of magents. In the preferred embodiment, this disk of magnetic material is laminated between two layers of non-magnetic material that support the magnets, and the magnetic material has a peripheral rim that extends to both surfaces of the rotor member to enhance the structural integrity. The stator members are substantially conventional in construction in that equally-spaced and radially-oriented slots are provided, and winding members are laid in these slots. A unit with multiple rotor members and stator members is also described.

REFERENCES:
patent: 4104552 (1978-08-01), Tsergas
patent: 4464592 (1984-08-01), Major
patent: 4578610 (1986-03-01), Kliman et al.
patent: 4634912 (1987-01-01), Heyraud
patent: 4761590 (1988-08-01), Kaszman
patent: 4866321 (1989-09-01), Blanchard

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