Wind turbines are the transformation and utilization of wind energy. When it comes to which country is the earliest in the use of wind energy, there is no way to know this, but China undoubtedly has a long history. There is a “sail” in ancient Chinese oracle bone inscriptions, 1800 years ago In the works of Liu Xi in the Eastern Han Dynasty, there is a description of “swing slowly and saying sail with the wind”, which is sufficient to show that my country is one of the countries that used wind energy earlier. In 1637, the “Tiangong Kaiwu” in the tenth year of Ming Chongzhen in 1637 contained the record that “Yangjun used sails for several pages, Hou Feng turned the car, and the wind stopped.” It shows that we had already made windmills before the Ming Dynasty, and windmills were The transformation of the linear motion of the wind into the rotating motion of the wind wheel can be said to be a huge improvement in the utilization of wind energy. Until now, my country still retains the habit of using windmills to lift water in the southeast coastal areas, and there are still many windmills in Jiangsu and other places. my country has been developing small wind turbines since the 1950s and has successively developed prototypes of 1-20 kilowatts, of which the 18-kilowatt unit was installed on Xiongge Peak in Shaoxing County, Zhejiang Province in July 1972, and relocated in November 1976. In Caiyuan Town, Yuan County, the wind turbine was working normally until 1986 to generate electricity. In 1978, the country listed the wind turbine project as a national key scientific research project. Since then, China’s wind turbine industry has developed vigorously. Wind turbines with a capacity of 1 to 200 kilowatts have been developed and produced. Among them, small ones are the most mature and the product quality Very good, not only met domestic needs, but also exported overseas. By the end of 1998, my country’s domestic wind turbines reached 178,574, with a total installed capacity of about 17,000 kilowatts.
The future development trend of wind turbines is large-scale development. One is to increase the diameter of the wind wheel and the height of the tower, increase the power generation, and develop towards super-large wind turbines. The other is to develop towards vertical axis wind turbines and vertical axis wind power generation. The axis of the machine is perpendicular to the direction of the wind force. It has a congenital advantage, which overcomes the problem of geometric multiple increase in cost caused by blade growth and tower height increase, and greatly improves the wind utilization rate, so it must be the future wind power The trend of generators.
Post time: Jun-28-2021
