Patent ID: 6704213
Filing Date: 2004-03-09
Classification: H02M,Y02E

Abstract:
A converter system for increasing a DC voltage, formed by at least one converter system element having an input-side DC circuit connected to a first voltage inverter, and by a center point connection, which is formed by at least two series-connected DC capacitances in the DC intermediate circuit, wherein a second connection of a primary winding of a transformer is connected to the output of the first voltage inverter, with the secondary winding of the transformer being connected to the input of an output-side converter which is provided for producing an output-side DC voltage, wherein the first voltage inverter is connected by means of a first and a second input connection to the DC intermediate circuit, and wherein the center point connection is connected via a third input connection of the first voltage inverter to a center point voltage stage of the first voltage inverter, which is in the form of a stepping circuit for producing three switching voltage levels,wherein a second voltage inverter is provided, which is connected on the input side to the first and second input connections of the first voltage inverter and to the center point connection, and wherein the second voltage inverter is connected on the output side to a first connection of the primary winding of the transformer.