H - Electricity – 01 – F
Patent
H - Electricity
01
F
H01F 27/28 (2006.01)
Patent
CA 2132709
An improved core-form transformer (20) is disclosed. The core-form transformer (20) includes a c-wrapped ribbon conduc- tor (32) with opposing wide sides and opposing thin sides. The c-wrapped ribbon conductor (32) is wound around a core (24) to form a plurality of coil sections (22). Adhesive is applied directly to one of the wide sides of the ribbon conductor (32) to form a strong mechanical coupling within the coil sections (22). A novel transposing fold (50, 52, 30, 44) of the ribbon conductor (32) is employed to create coil transpositions. The core-form transformer (20) of the invention reduces circulating current losses while ut- ilizing only a small number of transposing folds, generally adjacent to a first coil section, a last coil section, and an intermediate coil section.
Girgis Ramsis S.
Kennedy William N.
Ko Chung-Duck
Pandza Carl M.
Electric Power Research Institute
Smart & Biggar
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