Phase shifting transformer or autotransformer

Details Phase shifting transformer or autotransformer Phase shifting transformer or autotransformer

H - Electricity

01

F

H01F 30/00 (2006.01) H01F 30/02 (2006.01) H01F 30/12 (2006.01)

Patent

CA 2169590

A phase shifting polygonal transformer or autotransformer for a three phase electrical distribution system is provided, in which the transformer output winding or autotransformer winding is composed solely of three main coils and three auxiliary coils, alternately interconnected in series. The outputs for thetransformer/autotransformer are connected to taps in the coils offset from the connections between coils, which eliminates the need for multiple auxiliary coils in each phase. The transformer/autotransformer of the invention is thus much simpler and less expensive to manufacture than a conventional phase shifting transformer or autotransformer, but reduces harmonics just as effectively.

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