Intermediate circuit capacitor short-circuit monitoring

Details Intermediate circuit capacitor short-circuit monitoring Intermediate circuit capacitor short-circuit monitoring

2006-08-01

2006-08-01

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C324S076660

Reexamination Certificate

active

07084638

ABSTRACT:
The electronic monitoring circuit for monitoring one of a group of series-connected capacitor units in an intermediate circuit in order to detect short-circuiting of one of the capacitor units includes a device for deriving a reference voltage (14) from an intermediate-circuit voltage (L(+), L(−)) applied across the series-connected capacitor units (1, 2), a device for generating a control signal consisting of a voltage difference between the reference voltage (14) and a junction voltage at a junction (13) between two capacitor unit (1, 2) and a device for generating an error signal when said voltage difference falls below or exceeds an activation threshold voltage thus indicating that one of the capacitor units (1,2) has been short-circuited. The activation threshold voltage corresponds to a breakdown voltage of a zener diode provided in the monitoring circuit.

REFERENCES:
patent: 3125720 (1964-03-01), Swift
patent: 3681672 (1972-08-01), Strauss
patent: 4805063 (1989-02-01), Kataoka et al.
patent: 4956739 (1990-09-01), Becker et al.
patent: 5510944 (1996-04-01), Mozar
patent: 5880589 (1999-03-01), Okano
patent: 6268988 (2001-07-01), Baker
patent: 40 29 293 (1991-04-01), None
patent: 0 351 559 (1990-01-01), None
patent: 2047495 (1980-11-01), None

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