Preliminary study of the Floating Axis Wind Turbine concept

浮式海上风力机的主流概念是安装在浮子系统上的水平轴风力机(HAWT)。然而，在近海漂浮条件下，顶重结构并不合理。大型浮子系统的造价和塔顶吊舱维护工作的安全性问题严重影响了风力机的经济性能，其中一种解决方案是新型浮动轴风力机--浮动轴风力机。在概念中，圆柱形浮子是转子的涡轮轴。涡轮轴没有处于固定的竖直位置，使得支撑结构大大减少。本文研究了倾斜垂直轴风力机转子支承系统的工作原理、风洞试验方法以及陀螺效应对浮子式风力机动力学特性的影响。

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.