Application of frequency converter energy-saving technology in coal mining industry.
First, the principle and energy saving effect of frequency conversion speed regulation technology
1, the principle of frequency control technology
AC frequency conversion speed regulation is a new technology developed in recent decades. It is recognized as one of the most promising with its excellent speed regulation performance, remarkable power saving effect and wide applicability in various fields of national economy. Speed mode. AC frequency conversion speed regulation technology is a comprehensive application of microcomputer technology, power electronics technology and motor transmission technology. The basic principle is that under the action of the power semiconductor device, the power frequency AC voltage is changed into DC voltage through the rectifier bridge, and then the inverter The converter converts the AC voltage with adjustable frequency and voltage as the driving power source of the AC motor, so that the motor obtains the voltage and current required for stepless speed regulation, and is one of the high-efficiency speed regulation methods without additional slip loss.
2. Energy-saving effect of frequency conversion speed regulation technology
With the rapid development of electronic technology, computer technology, automatic control technology and high-power output technology, AC motor frequency conversion speed control technology has made breakthrough progress, becoming a major means of saving electricity and improving the environment and promoting technological progress. Has become an inevitable development trend. The obvious energy-saving effect and superior regulation performance make the application of frequency conversion energy-saving technology in China's coal mines more and more extensive, and the technology is more and more mature.
