Twin Screw Compressor

1.High efficiency filtration of small solid particles in the air to ensure the purity of air intake and prolong the operation life of the equipment.

2.Selected filter element to filter impurities of lubricating oil efficiency, ensure lubricating oil is clean and long host service time.

3.Adopt high speed heat dissipation system.

4.Automatic adjustment can reduce operating cost while effectively assist the whole machine opeartion.

5.Built-in excellent honeycomb can effectively reduce noise impact.

The role of frequency converter

The frequency converter of twin screw compressor integrates high-voltage and high-power transistor technology and electronic control technology, and is widely used. The function of the frequency converter is to change the frequency and amplitude of the AC motor's power supply, thus changing the period of its moving magnetic field, so as to achieve the purpose of smoothly controlling the motor speed.

The appearance of the frequency converter simplifies the complicated speed control. The combination of frequency converter + AC squirrel cage induction motor replaces most of the work that can only be done with DC motors, reduces the volume, reduces the maintenance rate, and makes the transmission The technology has developed to a new stage.

Classification of frequency converters:

1. Classified by input voltage level

Inverters of twin screw compressor can be divided into low-voltage inverters and high-voltage inverters according to the input voltage level. The common low-voltage inverters in China include single-phase 220V inverters, three-phase 220V inverters, and i-phase 380V inverters. High-voltage inverters usually have 6kV, 10kV transformers, and the control mode is generally based on a high-low-high inverter or a high-high inverter.

2. Classification according to the frequency of transformation

Inverters are divided into AC-AC inverters and AC-DC inverters according to the frequency conversion method.

AC-AC inverter of twin screw compressor can directly convert power frequency AC power into AC whose frequency and voltage can be controlled, so it is called direct inverter.

The AC-DC-AC inverter first converts the power frequency AC power into DC power through a rectifier device, and then converts the DC power into AC power whose frequency and voltage can be adjusted, so it is also called an indirect inverter.

3. According to the nature of DC power supply

In AC-DC-AC inverters, according to the process of converting the main circuit power supply into DC power supply, the nature of the DC power supply is divided into voltage-type inverters and current-type inverters.

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