Patent ID: 7944091
Filing Date: 2011-05-17
Classification: H02J,H02M,Y02E

Abstract:
1. An apparatus for feeding electrical energy into a power grid, comprising: a DC voltage converter circuit configured to receive a DC voltage across first and second input terminals and generate a converted DC voltage across first and second output terminals thereof, the DC voltage converter circuit comprising: an inverter circuit configured to convert the converted DC voltage received at first and second input terminals thereof from the DC voltage converter circuit to a grid potential at first and second output terminals thereof, the inverter circuit comprising an intermediate circuit comprising first and second series connected capacitors coupled across the first and second input terminals of the inverter circuit, and forming a ground terminal at a connection node therebetween, wherein the first and second output terminals of the DC voltage converter are coupled to the first and second input terminals of the inverter circuit, respectively, and wherein the ground terminal of the inverter circuit is coupled to the DC voltage converter circuit.