AC-TO-AC CONVERTER AND METHOD FOR CONVERTING A FIRST FREQUENCY AC-VOLTAGE TO A SECOND FREQUENCY AC-VOLTAGE

摘要

It is described an AC-to-AC-converter for converting a firstfrequency AC-voltage to a second frequency AC-voltage, theconverter comprising: a first converter section (101, 201)having at least a first input terminal (109) and a secondinput terminal (111) and having a first DC-output node (117)and a second DC-output node (119); a second converter section(103, 203) having a first DC-input nodes connected to thefirst DC-output node and having a second DC-input nodes connectedto the second DC-output node and having at least twosecond output terminals (131, 133, 135); a DC-link overvoltageclamp (105, 205) coupled between the first DC-output nodeand the second DC-output node; and a capacitor system (107,207), wherein the first converter section, the second convertersection, the DC-link overvoltage clamp, and the capacitorsystem are integrated into one assembly.