The Whole Pitch From The Wind Energy Conversion Device Of Aerodynamic Research

The optimum design object about traditional wind turbine is various cross section ofoar leaves with the biggest power coefficient in wind speed design. In fact, the design is atstable speed. However, the wind speed is changing all the time, which makes wind turbinedeviate design point. Therefore wind turbine obtain the largest power output on only point.Moreover, as we all known, the change in wind power and the cube of wind speed areproportionate. The violent change in spiral speed and power of wind turbine is no usefulvalue We must control it.To get the biggest power coefficient at various of wind speed, put out the argumentof controlling wind turbine according to the wind pressure which act on the wind wheelswept area. According to the argument on momentum, the argument on moment ofmomentum and the argument on blade element, on the base of Willson design manner, weput out the mathematical model of optimum design of wind turbine blade. We design theaccounting routine of design calculation and characteristic calculation, we also put out theprogram chart. Design and make a wind turbine of feather through various wind speed, andmake experiment of characteristic. According to the effect of experiment, we can seeclearly that the device may obtain higher output not on a point but in a more wide area. Onthe same time, we keep the output power of wind turbine stable out of fixed wind speedrange, and overcome the phenomenon which wind turbine lose speed in fixed wind speed,and make the wind turbine with 20 times bigger zero speed torque at lower wind speed.