Electrical reactor with foil windings

Details Electrical reactor with foil windings Electrical reactor with foil windings

H - Electricity

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336/15

H01F 27/08 (2006.01) H01F 27/20 (2006.01) H01F 27/28 (2006.01) H01F 27/32 (2006.01) H01F 37/00 (2006.01)

Patent

CA 1144246

12 48,280 A B S T R A C T ELECTRICAL REACTOR WITH FOIL WINDINGS An iron core shunt reactor for power factor improvement of transmission lines is constructed of a plurality of foil windings coaxially positioned along an iron core a discrete distance from each other. A coolant circulates axially along the core and radially outward between each of the foil windings providing the shunt reactor with improved thermal characteristics. The foil windings are all connected in parallel to form a neutral terminal and a line terminal. The foil winding/s at the line terminal may have the foil width gradually decreasing as the winding progresses radially away from the winding axis so as to give a rounding off effect to the outer periphery of the winding, to obviate the corona. The winding/s at the line end may additionally be encapsulated in an epoxy resin. This construction offers reduced electromagnetic forces on the windings, and improved thermal as well as impulse distribution characteristics.

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