Multi-phase shift transformer based ac-dc converter

Abstract

A multi-phase shift transformer based AC-DC converter includes a single transformer that reflects a negative portion of an AC voltage to become a positive voltage by generating multiple phases from a poly-phase input. The multiple phases generated can be separated by as little as 1° to create a well-approximated DC output without the need for a smoothing circuit. The primary and second windings of the transformer are flat wire conductors structured to provide a larger number of windings per core including a larger number of secondary coils, which provides for a large number of output phases.

1 . An AC-DC converter, comprising;
 a multi-phase shift transformer including at least two core sections with separate primary and secondary coils wound around each of the at least two core sections;   a diode bank connected between outputs of the secondary coils and an output terminal of the AC-DC converter; wherein   each of the primary and secondary coils includes a plurality of turns of a conductor that is defined by an electrically conductive flat wire.