4-3-4 浮体式洋上風力発電機に働く風力特性の検討

抄録

In recent years, floating offshore wind turbine（FOWT）power generation which is expected to have relatively easy instalment and stable power generation receives attention. Critical understanding on the dynamic oscillation characteristics of waves and wind acting on the facility and stable attitude control is required for designing FOWT. Therefore, in this study an experimental investigation on the wind force characteristics acting on the wind turbine was done. From the experiments conducted in this study, it was found that the way forces acted on the blade differ depending on the inclination of the wing. Besides, the difference in the rotational speed caused the difference in the drag acting on the generator. Therefore, by controlling the number of revolutions with an electrical system and combine it with mechanical parts equipped with a pitch controlling system, a higher of power generation efficiency may be achieved, possibly lead to the suppression of the fluctuation phenomenon. Next, we will study in more detail the relationship between rotational speed and the characteristics of the wind forces added to the generator. Furthermore, combination of the electrical controlling system with pitch controlling system will also be done simultaneously.