Quarterly Report of RTRI
Online ISSN : 1880-1765
Print ISSN : 0033-9008
ISSN-L : 0033-9008
PAPERS
Practical Application of a New Feeding Transformer for AC Electric Railway Substations
Hiroaki MORIMOTOTetsuo UZUKATakashi YAMAMOTOTakemi AKITA
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2010 Volume 51 Issue 4 Pages 182-188

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Abstract

Most Shinkansen substations in Japan receive their electric power supply for traction from extra-high voltage systems. "Modified-Woodbridge connection" transformers have been used for this since 1972; however, these have a rather complicated structure. As such, studies were carried out to develop a new type of transformer, which had the same functions, but was simpler. The transformer has been coined the "roof-delta connection" transformer since it has both roof and delta windings. Test results from a prototype of this transformer revealed that it could be used in AC traction feeding systems. This paper describes the fundamental characteristics of the roof-delta connection transformer and results from tests.

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© 2010 by Railway Technical Research Institute
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