Patent ID: 6424552
Filing Date: 2002-07-23
Classification: H02M

Abstract:
A multi-phase transformer system, comprising:a main transformer fed by an N-phase voltage; an auxiliary transformer fed by the N-phase voltage; wherein windings in the main transformer are connected to secondary windings in the auxiliary transformer to provide pairs of connected windings, each pair of connected windings having one of the windings of the main transformer and one of the secondary windings of the auxiliary transformer, the windings in such connected pair being arranged to produce voltages having different phases with each pair of windings producing an output voltage equal to the vector sum of the voltages produced by the such connected pair of windings; and wherein the N-phase voltage is connected to: (a) the primary winding of the auxiliary transformer; (b) the primary windings of the main transformer through the secondary windings of the auxiliary transformer, each pair of windings including one of the secondary winding of the auxiliary transformer and one of the primary windings of the main transformer.