Compressed air system utilizing a motor slip parameter
AssigneeGeneral Electric Company
InventorsJeffrey James Kisak, Mark Alan Linebach, Jason Arthur Dean, Richard Gerald Bliley, Stephen Mathew Pelkowski
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Abstract
A compressed air system and method of operating the system wherein the slip between the compressor motor and its powering alternator is used as an indication of whether the compressor is running in a loaded or unloaded mode. A slip parameter such as % Slip is determined and compared to an allowable value in real time. If the compressor is determined to be erroneously in a loaded mode, a corrective action may be taken to reduce the probability that the motor is later started with the compressor still in the loaded mode.
Claims17
A method of operating an air compressor system for a railroad locomotive comprising an air compressor, an electric motor receiving electric power and driving the air compressor, with the motor being directed to operate at a commanded speed and operating at an actual speed when driving the air compressor, the method comprising:
- determining the commanded speed of the electric motor;
- determining the actual speed of the motor in driving the air compressor;
- determining a parameter indicative of the slip between commanded and actual speeds;
- and
- predicting a faulted condition in the operation of the air compressor system in response to the parameter.
A compressed air system comprising:
- a compressor;
- a motor driving the compressor;
- a power source energizing the motor;
- a controller comprising logic configured to determine an actual slip between the motor and the power source;
- and
- a control module for comparing the actual slip to an allowed value of slip.
Dependencies are inferred from the claim text.