| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a means surely executing pitch angle control even if a slip ring between a rotor and a nacelle fails in a wind power generation system. <P>SOLUTION: A pitch angle controller, an auxiliary power source, and rotation speed detector are installed in a rotor of the wind power generation system. When a slip ring failure or wire breakage occurs, the pitch angle controller internally creates pitch angle command and controls pitch angle. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
