| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotation speed control mechanism in a wind power generator using a lift type vertical shaft wind mill enabling rotation speed control at a time of strong wind with a simple structure and economically without using a complicated control mechanism. <P>SOLUTION: A drag type vertical shaft wind mill part 2 is provided to rotate as one body with the lift type vertical shaft windmill 1. Consequently, if the lift type vertical shaft wind mill 1 rotates at rotating speed exceeding wind speed, the drag type vertical shaft wind mill part 2 acts as a brake to suppress rise of rotation speed of the lift type vertical shaft windmill 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
