Patent ID: 9318979
Filing Date: 2016-04-19
CPC Classification: H02M

Claim Text:
1. A converter configuration, comprising: at least one AC voltage connection at which an alternating current can be fed in or drawn; at least one DC voltage connection at which a direct current can be fed in or drawn; at least two series circuits connected in parallel and having external connections forming said at least one DC voltage connection, each of said series circuits connected in parallel containing in each case at least two sub modules connected in series, each of said sub modules containing at least two switches and a capacitor; an energy storage device coupled to said capacitor of at least one of said sub modules; and a filter connected electrically between said capacitor and said energy storage device, said filter selected from the group consisting of a low-pass filter and a band-pass filter, said filter having at least one of a limit frequency or an upper limit frequency being lower than a fundamental frequency of an alternating voltage present at said at least one AC voltage connection, the limit frequency of said low-pass filter or the upper limit frequency of said band-pass filter is maximally as large as half of the fundamental frequency of the alternating voltage present at said at least one AC voltage connection.