Abstract
The actuality and disadvantages of traditional high power asynchronism motor drive air compressor in locomotive ser-vice plant are discussed. In order to reduce the energy consumption and obtain safe running, a variable frequency con-trol method to the motor is supplied. A PLC with touch screen is used for monitoring the status of the compressor and its control system. It also presents energy consumption analysis caused by the variable frequency control method in a locomotive service plant.
Highlights
IntroductionAir compressor is a key equipment to provide air power, which is driven by asynchronism motor
It presents energy consumption analysis caused by the variable frequency control method in a locomotive service plant
Air compressor is a key equipment to provide air power, which is driven by asynchronism motor
Summary
Air compressor is a key equipment to provide air power, which is driven by asynchronism motor. Air compressor is operated by adjusting rotation speed of the motor. The output air pressure in pipeline of the air tank is acted as controlling object in the system. The air pressure in the pipeline is controlled to be fluctuate in a certain range. Its upper limit (0.7MPa) is under the rating pressure of the pipeline, and its lower limit (0.4MPa) is above the rating pressure of the equipment using the compressive air. There are two ways to control the air pressure in the pipeline to content this demand
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