Patent ID: 8154887
Filing Date: 2012-04-10
Classification: H02J,H02M,Y02T

Abstract:
1. An electric power supply system comprising: a transformer having first and second primary windings for receiving input power and a secondary winding for delivering output power; a first switching element connected to the first primary winding so as to control current in the first primary winding; a second switching element connected to the second primary winding so as to control current in the second primary winding; a first control unit connected to the first switching element; a second control unit connected to the second switching element, wherein: the first primary winding, the first switching element, and the first control unit are galvanically isolated from the second primary winding, the second switching element, and the second control unit; a first primary common ground coupled to the first primary winding; a second primary common ground coupled to the second primary winding; and a secondary common ground coupled to the secondary winding, wherein the first primary common ground, the second primary common ground and the secondary common ground are galvanically isolated from each other.