Patent ID: 7330363

Claim:
A converter circuit having a first and a second converter element, with each converter element having a DC voltage circuit and in each case one converter element phase (u 1 , v 1 , w 1 ) of the first converter element being connected to a respective converter element phase (u 2 , v 2 , w 2 ) of the second converter element, and having a transformer, with the secondary windings of the transformer being connected to the connected converter element phases (u 1 , v 1 , w 1 , u 2 , v 2 , w 2 ) of the first and second converter elements, and with one secondary winding in each case being connected in series in each connection of one converter element phase (u 1 , v 1 , w 1 ) of the first converter element to one converter element phase (u 2 , v 2 , w 2 ) of the second converter element, wherein each secondary winding is formed by two winding elements connected in series with one another, with the junction point of the two winding elements forming a neutral-point connection, and wherein two filter capacitors which are connected in series with one another are in each case connected in parallel with each secondary winding.