Patent ID: 6040988
Filing Date: 2000-03-21
Classification: H02H,H02M

Abstract:
A converter comprising:a rectifier circuit having an AC voltage input and a DC voltage output and configured to be connected to a power supply system;an invertor circuit having a DC voltage input and an AC voltage output;a DC voltage intermediate circuit arranged between the DC voltage output of the rectifier circuit and the DC voltage input of the inverter circuit; andtwo connecting lines, leading from the DC voltage output of the rectifier circuit to the DC voltage input of the invertor circuit,wherein the invertor comprises a three-point inverter with a center tap,wherein intermediate circuit capacitors are respectively arranged between the center tap and each of the connecting lines, andwherein in order to protect the converter in the event of a short circuit, first controllable semiconductor switches are arranged in each of the connecting lines between the DC voltage output of the rectifier circuit and a respective intermediate circuit capacitor.