基于规定性能方法的海上浮式风机独立变桨控制

This paper presents a new finite-time prescribed performance (FTPP) method for the control of offshore floating wind turbines to address the disturbance in complex environments and strong nonlinear and time-varying problems experienced by offshore floating fans. This method keeps the output power of the floating fans stable and reduces the structural load of the fans. A convergent performance function is introduced into FTPP to restrain power fluctuation for adaptation to highly nonlinear systems, such as floating wind turbines. Moreover, this method does not need an accurate system dynamics model. This method is applied to collective and individual pitch control, thus achieving power regulation, platform pitch motion control, and blade fatigue load reduction. The simulation test on FAST shows that the method has good performance.