Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2011-06-07
2011-06-07
Nguyen, Ha Tran T (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C340S648000, C340S661000
Reexamination Certificate
active
07956637
ABSTRACT:
A system and method for determining electric motor efficiency includes a monitoring system having a processor programmed to determine efficiency of an electric motor under load while the electric motor is online. The determination of motor efficiency is independent of a rotor speed measurement. Further, the efficiency is based on a determination of stator winding resistance, an input voltage, and an input current. The determination of the stator winding resistance occurs while the electric motor under load is online.
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Habetler Thomas G.
Lu Bin
Eaton Corporation
Isla Rodas Richard
Nguyen Ha Tran T
Ziolkowski Patent Solutions Group, SC
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