| 摘要 |
PURPOSE: A blade angle control apparatus of wind power generator and a wind power generator having the same can control the point of time for rotation of a blade by elastic force of a spiral spring in accordance with area subjected to wind pressure and wind velocity. CONSTITUTION: A blade angle control apparatus of wind power generator comprises the shaft (110), the housing (120), and the al spring (130). Above housing is installed so as to enable rotation of said shat. Said spiral spring stores elastic energy by relative rotation of said shaft and said housing through respectively fixing an end to above shaft and said housing. When force required for relative rotation is released, said spiral spring is made to rotate relatively in a reverse direction so that said shaft and said housing may return to the original condition. One of said shaft and said housing is fixed to a blade installation part installed to allow rotation of the blade by wind pressure, with the other being fixed to said blade. Area of said blade subjected to wind pressure is controlled by elastic force of said spiral spring according to the magnitude of wind velocity. |
