Frequency Conversion Screw Compressor
The difference between frequency conversion screw compressor and ordinary air compressor: 1.Air pressure stability: As the variable frequency screw air compressor utilizes the stepless speed regulation feature of the frequency converter, it can be started gently by the PID regulator inside the...
The difference between frequency conversion screw compressor and ordinary air compressor:
1.Air pressure stability: As the variable frequency screw air compressor utilizes the stepless speed regulation feature of the frequency converter, it can be started gently by the PID regulator inside the controller or inverter; for occasions with large fluctuations in gas consumption, Can quickly adjust the response; Compared with the upper and lower limit switch control of the power frequency operation, the pressure stability is improved exponentially.
2. Start without impact: Since the inverter itself contains the function of a soft starter, the starting current is at most 1.2 times of the rated current, and the start-up shock is very small compared with the normal frequency starting at more than 6 times of the rated current. This impact is not only on the grid, but also on the entire mechanical system, but also greatly reduced.
3. Variable flow control: The power frequency driven air compressor can only work in one displacement, and the variable frequency air compressor can work in a wider range of displacement. The frequency converter adjusts the motor speed according to the actual gas consumption to control the exhaust gas volume. When the gas volume is low, the air compressor can automatically sleep, which greatly reduces the energy loss.
4. The voltage of the AC power supply is more adaptable: the inverter uses over-modulation technology and can output enough torque to drive the motor when the AC power supply voltage is slightly lower, and when the voltage is slightly higher, it will not cause output to the motor. High voltage; For self-generation occasions, variable frequency drive can show its advantages; According to the characteristics of the motor VF (frequency compressor in the energy-saving state are working below the rated voltage), for the grid voltage is low, the effect is obvious.
5.low noise: the majority of operating conditions of the frequency conversion system is working under the rated speed, the host mechanical noise and wear reduction, extended maintenance and service life.