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

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.

Inventors:
 [1];  [2]
  1. Kenosha, WI
  2. Snellville, GA
Publication Date:
Research Org.:
Eaton Corporation (Cleveland, OH)
Sponsoring Org.:
USDOE
OSTI Identifier:
1019121
Patent Number(s):
7,956,637
Application Number:
US Patent Application 12/132,194
Assignee:
Eaton Corporation (Cleveland, OH)
DOE Contract Number:  
FC36-04GO14000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Lu, Bin, and Habetler, Thomas G. System and method to determine electric motor efficiency using an equivalent circuit. United States: N. p., 2011. Web.
Lu, Bin, & Habetler, Thomas G. System and method to determine electric motor efficiency using an equivalent circuit. United States.
Lu, Bin, and Habetler, Thomas G. Tue . "System and method to determine electric motor efficiency using an equivalent circuit". United States. https://www.osti.gov/servlets/purl/1019121.
@article{osti_1019121,
title = {System and method to determine electric motor efficiency using an equivalent circuit},
author = {Lu, Bin and Habetler, Thomas G},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {6}
}

Patent:

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