Filter capacitor degradation identification using computed power

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United States of America Patent

PATENT NO 9490690
APP PUB NO 20150263600A1
SERIAL NO

14204317

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Abstract

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Methods and apparatus are presented for detecting filter capacitor degradation in a power converter in which filter circuit branch currents and voltages are concurrently measured, nominal and measured power values are automatically computed according to the measured voltages, the operating frequency and nominal capacitance values, and power change values are calculated based on the difference between the measured and calculated nominal power values, and the change values are evaluated to selectively identify filter capacitor degradation conditions in the filter circuit.

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Patent Owner(s)

  • ROCKWELL AUTOMATION TECHNOLOGIES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benitez, Escobar Sinuhe Imuris Mequon, US 3 69
Bhandarkar, Santosh Manjunath Cedarburg, US 8 90

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