Frequency inverter energy saving reconstruction of screw air compressor

Aiming at the shortcomings of screw air compressor such as high energy consumption, big noise and low automation level ere, on the basis of the principle of screw air compressor energy-saving, a refor-ming scheme to save energy of screw air compressor by using frequency inverter was provided. The tech-niques such as safety chain PID adjustment and motor temperature rising control werer applied in the refor-ming scheme. Energy saving effect results showed that the energy saving rate reached up to 28.3%. Refor-ming scheme has large value to be popularized.