Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1977-08-18
1979-08-14
Budd, Mark O.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 60A, 310 61, 310179, 310215, H02K 900
Patent
active
041646720
ABSTRACT:
A rotating electrical machine having a winding configuration and insulating system permitting very high voltage operation. The phase coils of the armature winding are arrayed in outwardly spiralling paths about the rotor. Smooth and continuous interphase spaces are formed between the coils for containment of interphase insulating layers. Each interphase layer comprises laminated sheets of permeable material impregnated with a dielectric liquid. The phase coils are formed into inner and outer layers with each coil layer subdivided into a plurality of sections having series connected turns. Spaces between or within the layers contain dielectric liquid which is circulated for cooling the winding. Intracoil insulation between the coil layers is comprised of laminated sheets of permeable material impregnated with a dielectric liquid. The coil sections are coupled in series in a manner to minimize the maximum voltage differentials between the conductors and adjacent coil sections. In another embodiment the turns of each coil are arranged in adjacent layers separated by intracoil insulation material. The adjacent layers are further subdivided into pairs of sublayers formed of parallel conductors separated by a cooling duct through which a dielectric liquid circulates.
REFERENCES:
patent: 2465296 (1949-03-01), Swiss
patent: 2707204 (1955-04-01), Richardson et al.
patent: 2935859 (1960-05-01), Marvin, Jr.
"Neve Losungswege Zum Entwurf grosser Turbogeneratoran bias 2GVA, 60kV," by Gehard Aichholzer, Einglangt, 9-25-74.
Budd Mark O.
Electric Power Research Institute Inc.
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