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

Patent ·
OSTI ID:1224437
;

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.

Research Organization:
Eaton Corporation, Cleveland, OH (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC36-04GO14000
Assignee:
Eaton Corporation (Cleveland, OH)
Patent Number(s):
9,170,303
Application Number:
13/088,846
OSTI ID:
1224437
Country of Publication:
United States
Language:
English

References (5)

A self-tuning closed-loop flux observer for sensorless torque control of standard induction machines journal September 1997
A comparison of spectrum estimation techniques for sensorless speed detection in induction machines journal January 1997
Sensorless speed measurement using current harmonic spectral estimation in induction machine drives journal January 1996
Comparison of induction motor field efficiency evaluation methods conference January 1996
An on-line stator winding resistance estimation technique for temperature monitoring of line-connected induction machines
  • Lee, S. -B.; Habetler, T. G.
  • 2001 IEEE Industry Applications Society 36th Annual Meeting - IAS'01, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248) https://doi.org/10.1109/IAS.2001.955744
conference January 2001

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Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
33 ADVANCED PROPULSION SYSTEMS