Patent ID: 8531262
Filing Date: 2013-09-10
Classification: H01F,Y10T

Abstract:
1. A three-phase transformer circuit, comprising: a supply side including three sets of windings selectably configurable between a delta connection and a wye connection; a load side including a first set of load windings and a delta-wye switch, coupled to the first set of load windings, to selectably configure the first set of load windings between a delta connection and a wye connection independently from the supply side winding configuration, and wherein the three sets of windings each include inner windings and outer windings, the outer windings divided into respective first portions and second portions that are selectably configurable between a series connection and a parallel connection; wherein the supply side includes a non-linear device connected in parallel with each of the inner windings; and wherein the load side includes a second set of load windings.