At present, the motors supporting wind turbines in various types of machinery and electrical equipment in various industries in China account for about 60% of the total installed capacity of the country, and the electricity consumption accounts for about one-third of the total power generation in the country. It is particularly worth mentioning that most wind turbines have large horse-drawn cars in the process of use. In addition, due to changes in production and processes, it is necessary to constantly adjust the flow, pressure, temperature, etc. of the gas; at present, many units still The flow rate, pressure, temperature, etc. of the gas are adjusted by means of a backward adjustment flap or valve opening degree. This is actually a way to increase the resistance by artificially, and to meet the requirements of gas flow regulation in process and working conditions at the expense of energy and money. This backward adjustment method not only wastes precious energy, but also has poor adjustment accuracy. It is difficult to meet the requirements of modern industrial production and service, and the negative effects are very serious.
Energy-saving fan mode
The emergence of the frequency converter has brought a revolution to the AC speed control mode. With the continuous improvement and development of frequency conversion technology in the past ten years. The frequency conversion speed regulation performance is becoming more and more perfect, and it has been widely used in various fields of AC speed regulation. It has brought considerable economic benefits to the enterprise and promoted the automation process of industrial production. The frequency conversion speed regulation is used for AC asynchronous motor speed regulation, and its performance far exceeds any previous AC and DC speed regulation mode. The utility model has the advantages of simple structure, wide speed regulation range, high speed regulation precision, convenient installation and debugging, perfect protection function, stable and reliable operation and remarkable energy saving effect, and has become the latest trend of AC motor speed regulation.
