Rotary Screw Compressor Applications

1. Adopt the high efficient fin-type cooler with large heat area, surplus of heat exchange of 30% and better cooling result.

2.Adopt hihg efficiency filter system.

3.High efficiency power-saving.

4.The high efficiency and energy saving rotary air end is more reliable.

5.Energy conservation and environmental protection..

6.Reduce the noise of the air compressor.

The control theory and control device of frequency conversion speed regulation

AC variable frequency speed regulation technology is a highly developed product of technology that integrates power electronics technology, microelectronics technology, electrical machinery and automatic control. It controls the speed by changing the power supply frequency of the motor stator to achieve AC motor speed regulation. One way. AC variable frequency speed regulation is recognized for its wide speed range, good smoothness, excellent dynamic and static characteristics, significant energy saving effect and wide applicability, and is recognized as an ideal electric drive scheme with good applicability and high efficiency. rotary screw compressor applications

With the development of power electronics and electronic technology, new power electronic devices continue to emerge, and the progress of microprocessors has enabled the realization of AC speed regulation systems using semiconductor AC technology, especially the development of large-scale integrated circuits and computer control technology. As well as the continuous innovation of modern control theory, it has created favorable conditions for the development of AC electric drive, which makes the AC electric drive widen the speed range, improve the stability accuracy, fast dynamic response and the technical performance of reversible operation in the four quadrants. . With the advent of various power semiconductor switching devices, the key problem that has long hindered the popularization and application of frequency conversion technology is solved. How to construct an economical and reliable high-performance high-power frequency converter is solved, so that the frequency conversion speed regulation method is shown in industrial applications. Strong vitality. rotary screw compressor applications

In recent years, with the great development of digitally controlled variable frequency speed regulation systems, advanced control theories (such as field-oriented vector control, direct torque control) have been widely used, and the electrical components in the variable frequency device such as IGBT, I GCT, etc. have greatly improved performance. At the same time, the core control computer has evolved from a 16-bit computer to a high-speed digital signal processor (DSP) to perform complex control algorithm calculations, fast calculations and high-precision control. The noise of modern digital control frequency conversion speed regulation system is greatly reduced, the power consumption is greatly reduced, and a good current waveform can be obtained, which makes the system more reliable. At the same time, the speed control range, speed control accuracy, dynamic response, output performance, power factor, operating efficiency and usability are all incomparable. At present, the current response of fully digital controlled variable frequency speed regulation can reach 0.1 to 0.7ms, and the speed response can reach 2 to 4ms, which is sufficient to meet the current needs of the transmission field. The AC speed control system has taken a qualitative leap. It has gradually replaced the DC speed control system as the main transmission device. Modern high-speed trains, subways, and electric vehicles have all adopted AC speed control systems. rotary screw compressor applications

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