Partial core transformers for HV testing and power supplies (2008)
AuthorsBodger, P.S., Enright, W.G., Bendre, V.D., Bell, S.C.show all
Partial core transformers have different characteristics from full core transformers as the flux path is a combination of steel and air. They are also easier to fabricate, transport and assemble on site. A number of useful partial core transformers have been designed. One commercial manifestation is demonstrated in a parallel resonant compensation test method. This uses the magnetising inductance to supply reactive power to the insulation of a hydro generator stator. A partial core high temperature super-conducting transformer (PCHTST) has also been designed and built as a proof of concept model. A third high voltage partial core transformer has operated at open circuit conditions at 80 kV. It has been designed for sphere flashing for testing purposes and has been used as a supply for a HV display arc-sign. A 20 kV ac model has been combined with a two stage multiplier circuit to give 60 kV dc to charge capacitors. A further option gave 4000 A continuously for high current primary injection testing.
CitationBodger, P.S., Enright, W.G, Bell, S.C., Bendre, V.D. (2008) Partial core transformers for HV testing and power supplies. Sydney, Australia: TechCon Asia Pacific 2008, 1-2 Apr 2008.
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