Variable-speed VS. Fixed-speed Air Compressor

30 Nov.,2023

 

The motor drives the screw rotor to produce compressed air, and the compressed air enters the air storage tank. And what is the difference between variable-speed and fixed-speed air compressor during the consuming and producing process?

For the fixed-speed air compressor

When the pressure of the gas storage tank reaches the set value, the motor stops;

When the compressed air is partially used, the pressure of the air storage tank becomes smaller. When the pressure reaches a certain (set) value, the motor is started again to drive the air compressor to work;

When the compressed air is used a lot, the motor will start and stop frequently, and the motor will consume more electric energy when the electric current is larger during the starting process. When it stops, the energy of the motor cannot be used, so the energy consumed by the frequent start and stop of the motor is More.

For the variable-speed air compressor

When the air pressure is low, the motor of the air compressor rotates at full speed to inflate the air tank.

When the air pressure of the air storage tank reaches the set value, the inverter will reduce the frequency of the power supply to the motor, and the motor will run at a very low speed. At this time, the motor consumes very little power and the air compressor basically does not generate pressure;

When the compressed air is partially used, the pressure drops to the set value, and the power supply frequency to the motor rises to the power frequency state, and the motor runs at full speed under the power frequency, this saves a lot of power for starting and stopping the unit.

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