Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2011-08-09
2011-08-09
Nghiem, Michael P (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C702S060000, C702S064000, C702S117000
Reexamination Certificate
active
07996163
ABSTRACT:
A system for detecting a short circuit in a direct current (DC) link (312), wherein the DC link (312) is coupled with a rectifier (206) which includes a set of rectifier diode pairs (310). During operation, a controller (500) receives a set of outputs of a power generator204, a set of machine parameters, and a set of diagnostic values. Next, the controller (500) determines a set of expected operating values corresponding to the set of diagnostic values. The controller (500) then compares diagnostic values to corresponding expected operating values. If the difference between the diagnostic values and the expected operating values exceeds a threshold, the controller (500) provides a flag to indicate that a short circuit condition exists.
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Office Action in U.S. Appl. No. 12/210,898 mailed Oct. 20, 2010 (9 pages).
Bailey Bradley
Beach Frederick
Hendrickson Matthew
Caterpillar Inc.
Desta Elias
Leydig & Voit & Mayer
Nghiem Michael P
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