Variable Speed Drive Permanent Magnet Frequency Screw Air Compressor

Evaluation and Assessment of the saved energy
While electricity consumed by industrial air compressors accounts for a great part of a manufacturing facility’s total electricity bill, VSD rotary screw air compressors can provide valuable energy saving for manufactures. However, an accurate assessment of the varying air capacity required before settling on the investment program is indispensable to getting a good return for the investment.

Stable Supply of Pressure
With the adoption of PID (proportional gain,   integrational gain and differential gain), VSD rotary screw air compressors can modulate the speed of the drive motor precisely. VSD series can also automatically track the change of the air volume, stabilize the pressure in the system and in turn reduce the electricity consumption.

Avoidance of Peak Current
Regards to VSD rotary screw air compressors, peak current is avoided on starting the machine, so the damage to the power network and the whole mechanism is greatly reduced and the service life of the compressor is thus prolonged.

High-efficiency Inverter
With the built-in DC reactor restraining the frequency disturbance from the inverter, the high-efficiency inverter is approved by the SE assessment group. In full compliance with the current electromagnetic compatibility standard, the inverter ensures the best performance of rotary screw air compressors.

Special Motor exclusively designed for the VSD Series
The inverter-fed motor specially designed for VSD compressors ensures the highest efficiency of the inverter and motor in the whole process of running.

Efficiency Curve of Motor/Inverter