Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1992-10-30
1994-08-02
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310114, 310164, H02K 122
Patent
active
053348982
ABSTRACT:
This invention relates to high-density discoidal brushless induction open frame motors and generators with multistacking, multiphasing and multistaging capability. These motors may be in the range from 20 hp to 1,000 hp, 25,000 hp or more and these generators may range from a few kW to 1,000 kVA, 25,000 kVA or 100,000 kVA. Rare earth permanent magnets are arranged about a disk shaped rotor. A unique rectangular toroidal stator element serves as the mounting for numerous flat wound armature coils. The heat generated by the high flux and current densities is dissipated by a liquid cooling arrangement built into the toroidal stator element. The absence of the need to use the frame as a flux return path allows light weight aluminum to be used without a loss in efficiency. The open frame structure allows for easy cascading of multiple units along the same shaft for higher capacity.
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Litman Richard C.
Stephan Steven L.
To E.
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