Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Patent
1998-08-25
2000-03-21
Nguyen, Matthew
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
363 56, H02M 545, H02M 7122
Patent
active
060409886
ABSTRACT:
A converter with a DC voltage intermediate circuit and including a rectifier circuit having an AC voltage input and a DC voltage output, which rectifier circuit can be connected to a power supply system, an invertor circuit having a DC voltage input and an AC voltage output, and a DC voltage intermediate circuit, which is arranged between the DC voltage output of the rectifier circuit and the DC voltage input of the invertor circuit. Also included is two connecting lines, leading from the DC voltage output of the rectifier circuit to the DC voltage input of the invertor circuit, and at least one intermediate circuit capacitor arranged between the connecting lines. A simplified structure is achieved by virtue of the fact that in order to protect the converter in the event of a short circuit, a first controllable semiconductor switch is arranged in at least one of the connecting lines between the DC voltage output of the rectifier circuit and the at least one intermediate circuit capacitor.
REFERENCES:
patent: 5187652 (1993-02-01), Steimer
patent: 5272617 (1993-12-01), Nakamura
patent: 5469351 (1995-11-01), Masrur et al.
Rees Jochen
Steinke Jurgen
Asea Brown Boveri AG
Nguyen Matthew
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