Fan energy conservation reform

Today, in all kinds of mechanical and electrical equipment in China, the motor with the fan is about 60% of the national motor load, and consumes about a third of the power generated by the whole country. In particular, most of the fan is in the process of using big mara car phenomenon, and because of the change of the respect such as production, process, often need to adjust the gas flow rate, pressure, temperature, etc.; Many units still use backward regulating windboard or valve opening degree to regulate the gas flow, pressure, temperature and so on. This is actually a way to artificially increase resistance, and to meet the requirements of process and operating conditions for the regulation of gas flow at the expense of electricity and money. Such backward regulation not only wastes precious energy, but also has poor adjustment accuracy, which can hardly meet the demands of modern industrial production and service, and the negative effect is very serious.

In recent years, with the power electronic technology, the rapid development of computer technology, automatic control technology, electric drive technology is facing a historical revolution, namely the ac speed regulating to replace dc speed control and computer digital control technology to replace analog control technology has become a development trend. Motor ac frequency conversion technology is one of the main means to improve the quality of products and improve the environment and promote technological progress.