Patent ID: 6528903
Filing Date: 2003-03-04
Classification: H02H,H02J

Abstract:
A converter system having a number of individual converter modules, which are in the form of load converter modules or power supply system converter modules and are connected to one another via a DC voltage intermediate circuit, which has two DC voltage busbars and a DC voltage intermediate circuit capacitance arranged between the DC voltage busbars, wherein the DC voltage intermediate circuit capacitance is subdivided into a number of parts corresponding to the number of converter modules, each of the converter modules being associated with a portion of the DC voltage intermediate circuit capacitance which forms a local intermediate circuit, and the converter modules being coupled together with their local intermediate circuits to the DC voltage busbars by means of at least one protective switch, wherein at least one of the converter modules is a converter module which exclusively transfers power from its AC voltage terminals to the DC voltage intermediate circuit, and wherein the protective switch for this converter module is a semiconductor diode.