H - Electricity – 02 – K
Patent
H - Electricity
02
K
310/19, 310/94
H02K 9/00 (2006.01) H02K 3/00 (2006.01) H02K 3/24 (2006.01) H02K 3/32 (2006.01)
Patent
CA 1101033
WINDING AND INSULATING SYSTEM FOR EXTRA HIGH VOLTAGE ELECTRICAL MACHINE Abstract of the Disclosure 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 inter- phase spaces are formed between the coils for contain- ment 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 in- sulation 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 -1- adjacent layers are further subdivided into pairs of sub-layers formed of parallel conductors separated by a cooling duct through which a dielectric liquid circulates. Cross-Reference to Related Application Reference is made to U.S. Patent No. 4,151,433 issued April 24, 1979 by the inventor hereof and entitled Cooled Spiral Winding for Electrical Rotating Machines Stator.
304544
Electric Power Research Institute
Smart & Biggar
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