Preliminary study of the Floating Axis Wind Turbine concept

浮式海上风力发电机的主流概念是安装在浮式系统上的水平轴风力发电机（HAWT）。然而，头重脚轻结构在海上浮动工况下是不合理的。大型浮子系统的成本和塔顶吊舱运行维护工作的安全问题，使风力机的经济性能恶化。一种解决方案是新型浮动垂直轴风力发电机，称为浮动轴风力发电机（FAWT）。在这个概念中，一个圆柱形浮子是转子的涡轮轴。涡轮轴不在固定直立位置，使支撑结构显著减少。在本研究中，我们研究了转子支撑系统的机理，倾斜垂直轴风力机风洞试验的实验方法，以及陀螺仪效应对浮动风力机动力学的影响。

The mainstream concept of floating offshore wind turbine is the horizontal axis wind turbine (HAWT) mounted on a float system. However, the top-heavy structure is not reasonable in offshore floating condition. The cost of large float system and the safety issue of the maintenance work in the nacelle moving on the top of tower deteriorate the economic performance of the wind turbine.One solution is the new type floating vertical axis wind turbine, named Floating Axis Wind Turbine (FAWT). In the concept, a cylindrical float is the turbine shaft of rotor. The turbine axis is not in the fixed upright position so that the support structures are significantly reduced. In this research, we investigated the mechanism of rotor support system, experimental method of the wind tunnel test of tilted vertical axis wind turbine, and the influence of gyroscopic effect on the dynamics of floating turbine.