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Title: System and method to determine electric motor efficiency using an equivalent circuit

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.
Authors:
;
Publication Date:
OSTI Identifier:
1224437
Report Number(s):
9,170,303
13/088,846
DOE Contract Number:
FC36-04GO14000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Apr 18
Research Org:
Eaton Corporation, Cleveland, OH (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 33 ADVANCED PROPULSION SYSTEMS