H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 7/08 (2006.01) H02K 11/00 (2006.01) H02P 1/26 (2006.01)
Patent
CA 2677547
An accurate slip calculation for providing monitoring and protection to an electric motor. The slip calculation is made using a minimum value of stator resistance as the initial stator resistance, where the minimum value of stator resistance is the minimum value of stator resistance calculated during an initiation period of the motor. The initiation period may be a predetermined time period or a predetermined number of cycles during the motor startup. The initiation period may start after a predetermined settling time or after a predetermined condition is met.
Patel Subash C.
Zocholl Stanley E.
Ridout & Maybee Llp
Schweitzer Engineering Laboratories Inc.
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