First, the principle and energy saving effect of frequency conversion speed regulation technology
1, the principle of frequency control technology
AC variable frequency 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 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.
Based on the integration of strong and weak electricity and electromechanical integration, the integrated application of power electronics technology, micro technology and motor drive technology is the AC frequency conversion speed regulation technology. This can be used as an efficient speed control method without additional slip loss, and at the same time, the motor can obtain the voltage and current required for stepless speed regulation. The frequency conversion speed regulation technology developed in the energy crisis can effectively improve the work efficiency greatly because it can automatically and smoothly increase and decrease the speed according to the motor load. In this way, the frequency control of the power supply of the motor can be effectively adjusted as a high-efficiency, high-performance variable speed control technology.
