| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wind turbine generator always providing an appropriately constant stable power generation output in a wide wind speed area from light wind to strong wind and also preventing damage to a wind turbine even under the strong wind. <P>SOLUTION: The wind turbine generator includes: a wind turbine rotor 1; a blade support body 2 fixed to the wind turbine rotor and radially extending from the wind turbine rotor; a blade rotating shaft 3 rotatably supported by the blade support body; a blade 4 fixed to the blade rotating shaft; a cam 16; and a spring 18 applying elastic force to the cam. Since the wind turbine generator includes the blade support body 2 radially extending from the wind turbine rotor 1, the blade 4 is automatically rotated around the blade rotating shaft 3 when wind force is varied, the compressed state of the spring 18 is varied by rotation of the cam 16, and the blade 4 is maintained at the optimum rotation angle. Therefore, the appropriately constant power generation output is provided in the wide wind speed area, the blade is supported by the strong blade support body even under a stormy wind condition, and the surface of the blade becomes approximately parallel to a wind direction. Accordingly, it is possible to prevent damage to the wind turbine. <P>COPYRIGHT: (C)2011,JPO&INPIT |
