Patent ID: 8716881
Filing Date: 2014-05-06
Classification: H02P

Abstract:
1. A three phase inverter-type generator comprising: an engine; an AC generator driven by the engine; a rectifier for converting an output of the AC generator into a DC voltage; a three phase inverter for converting an output of the rectifier into a three phase AC voltage; and a three phase transformer connected to an output side of the three phase inverter; wherein the three phase transformer has a primary-side connection and a secondary-side connection having a three phase connection; the secondary-side connection having, first through third windings forming a star connection in which one end of each is respectively connected to a neutral point, with each having the same number of windings and a mutual phase difference of 120°; a first additional winding connected at one end to a position located a predetermined number of windings from the neutral point on the second winding, with the same number of windings as the predetermined number of windings, and having the opposite phase to that of the third winding; and a second additional winding connected at one end to a position which is the same number of windings as the predetermined number of windings from the neutral point on the third winding, with the same number of windings as the predetermined number of windings, and having the opposite phase to that of the second winding; whereby a three phase four wire output is output from the respective other ends of the first through third windings and from the neutral point, and a single phase three wire output is output from the respective other ends of the first and second additional windings and from the neutral point.