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:
-
- Kenosha, WI
- Sussex, WI
- Snellville, GA
- Atlanta, GA
- Oak Creek, WI
- Issue Date:
- Research Org.:
- Eaton Corporation (Cleveland, OH)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1034104
- Patent Number(s):
- 8084984
- Application Number:
- 12/341,044
- Assignee:
- Eaton Corporation (Cleveland, OH)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H02 - GENERATION H02P - CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS
- 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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {12}
}