Electric motor protection using stator current and voltage measurements

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United States of America Patent

PATENT NO 10848092
APP PUB NO 20180062552A1
SERIAL NO

15801488

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Abstract

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Monitoring conditions of an electric motor using stator current and voltage signals from power supplied to the motor is disclosed herein. The stator voltage and current signals may be used to calculate instantaneous power values which may be used to calculate slip. The slip may be used to monitor for a locked rotor condition during startup of the motor. The slip value may be used to provide thermal protection to the electric motor.

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Patent Owner(s)

Patent OwnerAddress
SCHWEITZER ENGINEERING LABORATORIES INC2350 NE HOPKINS COURT PULLMAN WA 99163

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Donolo, Marcos A Pullman, US 29 321
Hartshorn, Jay Moscow, US 10 7

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