Patent ID: 9601258
Date: 2017-03-21
CPC Classifications: H01F,H02M,H05K

Claim:
1. A multi-phase transformer, comprising: a plurality of primary windings arranged in a delta configuration to receive a three-phase input voltage, each primary winding having a center tap and a plurality of taps disposed symmetrically about the center tap; a first plurality of paired secondary windings, a first secondary winding of a pair of paired secondary windings having a first end and a second end, the first end being electrically connected to a tap on a first side of the center tap of a predetermined primary winding of the plurality of primary windings, the first secondary winding being magnetically coupled to a primary winding of the plurality of primary windings other than the predetermined primary winding to which it is electrically connected, a second secondary winding of the pair having a first end and a second end, the first end being electrically connected to a tap on a second, opposing side of the center tap of the predetermined primary winding, the second secondary winding being magnetically coupled to a primary winding other than the predetermined primary winding to which it is electrically connected and other than the primary winding to which the first secondary winding is magnetically coupled, the predetermined primary winding for a pair of the first plurality of paired secondary windings being other than the predetermined primary winding for any other pair of the first plurality of paired secondary windings; a second plurality of paired secondary windings, a first secondary winding of a pair of paired secondary windings having a first end and a second end, the first end being electrically connected to a tap on a first side of the center tap of a predetermined primary winding of the plurality of primary windings, the first secondary winding being magnetically coupled to a primary winding of the plurality of primary windings other than the predetermined primary winding to which it is electrically connected, a second secondary winding of the pair having a first end and a second end, the first end being electrically connected to a tap on a second, opposing side of the center tap of the predetermined primary winding, the second secondary winding being magnetically coupled to a primary winding other than the predetermined primary winding to which it is electrically connected and other than the primary winding to which the first secondary winding is magnetically coupled, the predetermined primary winding for a pair of the second plurality of paired secondary windings being other than the predetermined primary winding for any other pair of the second plurality of paired secondary windings; the center taps collectively providing a first three-phase output; the second end of a first secondary winding of each pair of secondary windings of the first plurality of paired secondary windings collectively providing a second three-phase output; the second end of a second secondary winding of each pair of secondary windings of the first plurality of paired secondary windings collectively providing a third three-phase output; the center taps and the second ends of the paired secondary windings of the first plurality of paired secondary windings collectively providing a first multi-phase output; and the second ends of the paired secondary windings of the second plurality of paired secondary windings and the three-phase input voltage collectively providing a second multi-phase output.