Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1994-04-20
1996-02-06
LaBalle, Clayton E.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 58, 310 61, 310214, 310 71, H02K 900, H02K 919, H02K 1100, H02K 346
Patent
active
054898102
ABSTRACT:
A switched reluctance starter/generator is presented which has a stator mounted within a housing having an outer periphery and a plurality of salient poles defining an inner periphery, the salient poles further defining slots therebetween. A stator cooling sleeve is press fit on the outer periphery of the stator and defines a plurality of cooling channels between the outer periphery of the stator cooling sleeve and the housing. A plurality of phase windings are wound on the plurality of salient stator poles, and phase winding retainers are positioned within the slots for securing the phase windings on the salient stator poles. The winding retainers comprise a triangular base separator, a quasi-dove-tailed retaining member, and two opposing wedge shaped expanders. A rotor assembly is rotatably positioned within the stator, and comprises a hollow shaft assembly and a rotor core having a plurality of salient poles press fit on the outer periphery of the shaft. The hollow shaft assembly comprises an outer sleeve and an inner cooling sleeve. The inner periphery of the inner cooling sleeve defines an interior void of the shaft. The outer periphery of the inner cooling sleeve is press fit on the inner periphery of the outer sleeve and defines a plurality of cooling channels between the inner periphery of the outer sleeve and the outer periphery of the inner cooling sleeve. The stator windings are wound from hollow core conductors, and are coupled to external sources of cooling fluid and electrical energy by electrical/hydraulic terminal connectors.
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An article entitled Switched Reluctance Starter/Generator, written by Arthur Radun, James Rulison and Peter Sanza. Appearing in the SAE International, No. 921974, Aerotech '92, Anaheim, CA. Oct. 5-8, 1992.
An article entitled A Very High Speed Switched-Reluctance Starter-Generator For Aircraft Engine Applications, written by Stephen R. MacMinn. Proceedings of NAECON '89, May 22-26, 1989, Dayton, Ohio.
An article entitled Detailed Design of a 250-kW Switched Reluctance Starter/Generator For An Aircraft Engine, written by C. A. Ferreira and Dr. Eike Richter. SAEE Paper #931,389, SAEE Aerospace Atlantic Conference, Apr. 20, 1993-Apr. 23, 1993.
Ferreira Caio A.
Legros Craig R.
LaBalle Clayton E.
Makeever Jeffery J.
Sundstrand Corporation
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