| 摘要 |
There is provided a yaw rotation control method for a wind turbine generator that does not require a yaw motor and is advantageous for a reduction in cost and a reduction in size and weight of a nacelle. A control unit (20) performs, according to a deviation between wind direction information (.theta.w) obtained from a wind direction detecting unit (30) and a present state yaw angle (.theta.z) obtained from a yaw rotating position detecting unit (40), yaw rotation control for outputting pitch angle command values (.theta.l, .theta.2, and .theta.3) of yaw rotation to a pitch driving unit (21) and directing front surfaces of rotation surfaces of wind turbine blades at the time of start. This yaw rotation control includes a step of controlling pitch angels of the wind turbine blades at a predetermined azimuth angle.
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