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Title: System and method for monitoring and controlling stator winding temperature in a de-energized AC motor

Abstract

A system and method for measuring and controlling stator winding temperature in an AC motor while idling is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of a multi-phase AC motor. The circuit further includes a plurality of switching devices to control current flow and terminal voltages in the multi-phase AC motor and a controller connected to the circuit. The controller is configured to activate the plurality of switching devices to create a DC signal in an output of the motor control device corresponding to an input to the multi-phase AC motor, determine or estimate a stator winding resistance of the multi-phase AC motor based on the DC signal, and estimate a stator temperature from the stator winding resistance. Temperature can then be controlled and regulated by DC injection into the stator windings.

Inventors:
 [1];  [2];  [3];  [4];  [5]
  1. Kenosha, WI
  2. Sussex, WI
  3. Snellville, GA
  4. Atlanta, GA
  5. Oak Creek, WI
Publication Date:
Research Org.:
Eaton Corporation (Cleveland, OH)
Sponsoring Org.:
USDOE
OSTI Identifier:
1034104
Patent Number(s):
8,084,984
Application Number:
12/341,044
Assignee:
Eaton Corporation (Cleveland, OH)
DOE Contract Number:  
FC36-04GO14000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Lu, Bin, Luebke, Charles John, Habetler, Thomas G, Zhang, Pinjia, and Becker, Scott K. System and method for monitoring and controlling stator winding temperature in a de-energized AC motor. United States: N. p., 2011. Web.
Lu, Bin, Luebke, Charles John, Habetler, Thomas G, Zhang, Pinjia, & Becker, Scott K. System and method for monitoring and controlling stator winding temperature in a de-energized AC motor. United States.
Lu, Bin, Luebke, Charles John, Habetler, Thomas G, Zhang, Pinjia, and Becker, Scott K. Tue . "System and method for monitoring and controlling stator winding temperature in a de-energized AC motor". United States. https://www.osti.gov/servlets/purl/1034104.
@article{osti_1034104,
title = {System and method for monitoring and controlling stator winding temperature in a de-energized AC motor},
author = {Lu, Bin and Luebke, Charles John and Habetler, Thomas G and Zhang, Pinjia and Becker, Scott K},
abstractNote = {A system and method for measuring and controlling stator winding temperature in an AC motor while idling is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of a multi-phase AC motor. The circuit further includes a plurality of switching devices to control current flow and terminal voltages in the multi-phase AC motor and a controller connected to the circuit. The controller is configured to activate the plurality of switching devices to create a DC signal in an output of the motor control device corresponding to an input to the multi-phase AC motor, determine or estimate a stator winding resistance of the multi-phase AC motor based on the DC signal, and estimate a stator temperature from the stator winding resistance. Temperature can then be controlled and regulated by DC injection into the stator windings.},
doi = {},
url = {https://www.osti.gov/biblio/1034104}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {12}
}

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