System and method for on line monitoring of insulation...

Details System and method for on line monitoring of insulation... System and method for on line monitoring of insulation...

2006-05-09

2006-05-09

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C324S545000, C318S478000, C361S023000

Reexamination Certificate

active

07042229

ABSTRACT:
Insulation condition monitoring systems and methods for a rotating DC electric machine, the method comprising: measuring a first set of values for an instantaneous differential current and an instantaneous voltage during operation of the rotating DC electric machine; calculating a value for a phasor current and phasor voltage based upon the first set of values of the instantaneous differential current and the instantaneous voltage, respectively; calculating an angular relationship between the phasor current and the phasor voltage; and determining insulation condition based on the angular relationship.

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U.S. Appl. No. 10/814,839, filed Dec. 14, 2004, Abdelkrim Younsi.

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