Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Patent
1998-08-17
2000-03-07
Hoff, Marc S.
Data processing: measuring, calibrating, or testing
Measurement system
Performance or efficiency evaluation
324772, G01R 3134
Patent
active
060352655
ABSTRACT:
A test procedure detects the onset of stator winding damage, identifies the failure mechanism, determines the winding's susceptibility to further damage, and predicts stator winding failure. This is accomplished by introducing a high frequency signal onto power lines which feed the stator and monitoring a change in the capacitance between the individual windings during introduction of the high frequency signal. In order to monitor the change in capacitance, a current sensor and voltage sensor are used to measure the current and voltage on the power lines during introduction of the high frequency signal. Changes in the capacitance between the individual stator windings are reflected as changes in the broadband impedance response of the stator windings which can be calculated by dividing the measured voltage by the measured current.
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DelVecchio Perry A.
Dister Carl J.
Rogovin Daniel N.
Amin Himanshu S.
Hoff Marc S.
Horn John J.
Miller Craig Steven
Miller John M.
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