垂直軸型風力発電システムの空力-弾性-制御連成解析

（可変速運転下での疲労荷重分析）

抄録

An aero-elastic-control coupled simulation model of on-shore large-scale vertical axis wind turbine-generator systems was developed as the first phase of the development of floating offshore vertical axis wind turbine-generator systems. The aero-elastic-control coupled simulation model consists of an aerodynamic submodel of a vertical axis wind turbine, an elastic vibration submodel, and a control submodel. A weak-coupled approach, in which the aerodynamic submodel and the vibration and control submodels are alternately solved, was employed from the perspective of computational loads for nonlinear aerodynamic characteristics of vertical axis wind turbines. The developed simulation model was applied to a virtual 100-m straight-wing vertical axis wind turbine-generator system. The numerical analysis under turbulent wind fields revealed the dynamic aero-elastic-control behaviors of the target system, including damage equivalent fatigue load characteristics, and the effectiveness of the developed model in comparison to a conventional dynamic simulation model using a lamped aerodynamic submodel and a rigid-body model.