Converter circuit with short-circuit current protection

Details Converter circuit with short-circuit current protection Converter circuit with short-circuit current protection

2006-05-23

2006-05-23

Patel, Rajnikant B. (Department: 2838)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S729000, C363S041000, C363S161000

Reexamination Certificate

active

07049787

ABSTRACT:
A converter circuit with short-circuit current protection having a DC voltage circuit (1) is proposed, which DC voltage circuit (1) is formed by a DC voltage circuit subsystem (2.1), the DC voltage circuit subsystem (2.1) having a first energy store (3) and a second energy store (4), which is connected in series with the first energy store (3), and a fuse (5). Furthermore, the converter circuit has at least one pair of branches (6) provided for each phase (R, S, T) and connected in parallel with the DC voltage circuit (1), each pair of branches (6) having power semiconductor switches. In order to achieve a low-inductance converter circuit, the fuse (5) forms the connection between the first energy store (3) and the second energy store (4).

REFERENCES:
patent: 4779034 (1988-10-01), Shepard, Jr.
patent: 5091840 (1992-02-01), Walker
patent: 5365424 (1994-11-01), Deam et al.
patent: 5450306 (1995-09-01), Garces et al.
patent: 6-311730 (1994-11-01), None
patent: 057782 (2001-02-01), None
patent: 057782 (2005-02-01), None
Karsten Ries, Henrik Rasmussen, Peter Bjornaa, “Determination of Added Inductance By Fuses In DC-Link Inverter Applications”, Drives and Controls, Mar. 13, 2001, Seiten 1-9, London.

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