In 1980, our national leaders have visited China’s north-western area, to the Ministry of Science and Technology put forward to solve the farmers and herdsmen in remote areas of the problem of electricity instructions. Ministry of Science and Technology Organization experts to visit these areas, the proposed development of small wind turbines in remote areas of farmers and herdsmen to solve electricity supply problems, and included in the country “65″ scientific and technological plans.

     At that time, the Nanjing Aeronautical Institute, Harbin Institute of Technology, Shenyang Institute of Technology, Tsinghua University, Changsha Railway Institute and a number of other institutions and the Ministry of Aeronautics 602, machinery, animal husbandry machines by the Department of Hohhot, the Chinese Academy of Sciences Electrical Engineering, Beijing Agricultural Mechanization Research Institute, Zhejiang Electrical Research Institute, Chinese Academy of Meteorological Sciences and a number of other institutions as well as the China Shipbuilding Industry Corporation 884 plants, 441 plants, power plant in Inner Mongolia, Baotou electrical plant, machinery manufacturers, animal husbandry, Beijing combine harvester factory, Beijing Motor Factory, Zhejiang build power plants and other enterprises are involved in small-scale wind turbine design, development.

     In the late eighties, China’s small-scale wind turbine to form a large-scale production capacity, in Inner Mongolia and other remote areas to promote small and medium-sized wind turbines near 200,000 units in 1990 to convene a national wind in Dandong Machinery Industry Association General Assembly when members have more than 50. However, because there is no timely set up of product quality inspection system and the market monitoring mechanism, with the result that a large number of low-quality low-cost small and medium-sized wind turbines into the market, resulting in the cost of the product and the market price of dislocation, providing quality products business out of the market, but also the loss of product upgrading and further R & D capabilities. Together with the product after-sale service system did not set up, small and medium-sized large-scale wind turbine Product quality problems arise, users of small and medium-sized fan Product lost faith in the market to shrink dramatically, so that the entire small-scale wind turbine manufacturing industry overall shrinkage.

     Wind by the National Association of Machinery Industry in 2000 small-scale wind turbine on the National Product sales statistics, sales of small wind turbine products 12,670 sets, one of the following products 300w sets 12000 and low-quality low-cost products Lord, industrial output value of less than 20 million yuan, less than an annual production value of small and medium enterprises.

     The main reason for such a situation has the following.

     1.1 pairs of small wind generators have sufficient understanding of the technical difficulty

     NASA had in 1992 published an article on that NASA and Boeing to small and medium-sized wind turbines because of the technical difficulty of under-estimation, while the lead for the military to develop small portable wind generator failure, the main article references to the development of small and medium-sized wind turbines on the difficulty lies in:

     Faced by small and medium-sized wind turbine extremely bad natural environment, because of the wind by the ground roughness and obstacles a great impact, the higher the height from the ground, wind speed more stable. And small and medium-sized fans installed by height restrictions, but should not live away from the place of electricity users, so fans are small and medium-sized job of turbulence in the wind region, wind speed wind direction frequently changes the rules without damaging a lot of fans.

     Small and medium-sized wind turbine can provide energy is limited, taking into account the cost of unit power factor, the best materials and advanced control technology can not be used, choice of material and technical means is limited. A long time, China’s lack of development of a small blower fan to use the environment of small studies comparing the performance of fan-oriented test data, the lack of fans in different environments running under examination requirements.

     1.2 Products of the technical requirements unreasonable, supporting system for the separation of their respective industries

     Although China’s technical standards for small wind turbines make the adjustments and modifications, but the small fan or the product requirements set by the eighties fan standards to the requirements of one of the most notable characteristic is that the requirements of the rated fan speed in the 6 ~ 8m / s, This is extremely unreasonable. Since small-scale wind turbine technology to the limit by only using fixed-paste from the leaves, when the wind speed is greater than the rated wind speed, the fan speed must be the beginning of action, otherwise, may be burned on generators. Fan speed, the output power of the rapid decline, thereby greatly reducing the effective work of fan speed range.

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