Patent ID: 6208230
Filing Date: 2001-03-27
Classification: H01F

Abstract:
A transformer for a cycloconverter comprising:three single-phase transformers connected into a three-phase configuration, each of the single-phase transformers comprising:a two-legged core;primary windings wound on at least one of legs of the two-legged core; andtwelve secondary windings wound on at least one of the legs of the two-legged core, the secondary windings being connected to positive group converters and negative group converters of a three-phase output circulating current type cycloconverter composed of three single-phase output circulating current type cycloconverters connected in a three-phase configuration, each of the single-phase output circulating current type cycloconverters including two positive group converters and two negative group converters arranged in a twelve-pulse bridge configuration;wherein the single-phase transformers include six sets of the secondary windings of the respective phases each of which sets is connected in a delta configuration and other six sets of the secondary windings each of which sets is connected in a wye configuration.