Patent ID: 6320773
Filing Date: 2001-11-20
Classification: H02M

Abstract:
An aircraft ground power unit for providing dc power for aircraft, comprising:a source of 3-phase ac power including A, B and C phases;a transformer/rectifier arrangement for converting the 3-phase ac power to dc power, including:an A-phase transformer formed by an A-phase magnetic member, an A-phase primary winding having first and second sides, and an A-phase secondary winding;a B-phase transformer formed by a B-phase magnetic member, a B-phase primary winding having first and second sides, and a B-phase secondary winding;a C-phase transformer formed by a C-phase magnetic member, a C-phase primary winding having first and second sides, and a C-phase secondary winding;wherein the A-phase primary winding first side is operatively connected to receive A-phase power from the source of 3-phase ac power, wherein the B-phase primary winding first side is operatively connected to receive B-phase power from the source of 3-phase ac power, wherein the C-phase primary winding first side is operatively connected to receive C-phase power from the source of 3-phase ac power;wherein the A-phase primary winding second side, B-phase primary winding second side and C-phase primary winding second side are connected together for delivering current traveling out of one of said second sides into at least one of said other second sides.