Electric motor thermal protection using stator current measurements
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United States of America Patent
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Mar 13, 2018
Issued Date -
N/A
app pub date -
Mar 2, 2016
filing date -
Sep 20, 2013
priority date (Note) -
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Abstract
Monitoring thermal conditions of an electric motor using current signals from power supplied to the motor is disclosed herein. The current signals may be used to calculate composite current values which may be used to calculate slip. The slip may be used to provide thermal monitoring and protection to the electric motor. Slip may be calculated using only values from the stator of the electric motor for providing thermal monitoring and protection to electric motors where rotor measurements are not available.
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