Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2009-05-19
2011-11-08
Phan, Huy Q (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S546000, C324S765010
Reexamination Certificate
active
08054084
ABSTRACT:
Systems and methods are provided for identifying a fault condition in stator windings in an electric motor. A method comprises applying a first signal at a first electrical angle to the stator windings and measuring a second signal from the stator windings in response to the first signal. The method further comprises determining a measured response for the electric motor at the first electrical angle based on the second signal and obtaining a nominal response for the electric motor at the first electrical angle. A fault condition is identified when a magnitude of the difference between the measured response and the nominal response is greater than a threshold value.
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Rahman Khwaja M.
Schulz Steven E.
Yeh Chia-Chou
GM Global Technology Operations LLC
Ingrassia Fisher & Lorenz P.C.
Le Son
Phan Huy Q
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