System and method for determining stator winding resistance in an AC motor

Patent · Tue May 31 00:00:00 EDT 2011

OSTI ID:1016727

Lu, Bin ^[1]; Habetler, Thomas G ^[2]; Zhang, Pinjia ^[3]; Theisen, Peter J ^[4]

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1. Kenosha, WI
2. Snellville, GA
3. Atlanta, GA
4. West Bend, WI

A system and method for determining stator winding resistance in an AC motor is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of an AC motor. The circuit includes at least one contactor and at least one switch to control current flow and terminal voltages in the AC motor. The system also includes a controller connected to the circuit and configured to modify a switching time of the at least one switch to create a DC component in an output of the system corresponding to an input to the AC motor and determine a stator winding resistance of the AC motor based on the injected DC component of the voltage and current.

• Research Organization: Eaton Corporation (Cleveland, OH)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC36-04GO14000
• Assignee: Eaton Corporation (Cleveland, OH)
• Patent Number(s): 7952318
• Application Number: 12/132,484
• OSTI ID: 1016727
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING