抄録
In this paper, the pitch angle control design problem of wind turbine generator is considered. Dynamic characteristics of wind turbine system vary according to the wind speed and also the generator speed. But it is required to maintain the generator speed at the optimal one in spite of such variations. For this purpose, the pitch angle control of wind turbine which includes the robust stability is used. However, the conventional standard H∞ control provides conservative performance, so the control performance is inferior to conventional controllers such as gain scheduling PI controls. In this paper, a result of a pitch angle control of wind turbine generator by using the less conservative robust control is shown. Obtained control performances are verified based on the dynamic simulator “Bladed” and it is confirmed that the obtained controller provides acceptable control performances by a fixed parameter controller. And the performances are almost the same as the results by the gain scheduling PI control.
