论文部分内容阅读
针对风力机运行区域特点,提出变速变桨距风力机功率控制策略。以风力机专业设计软件Bladed为工具,对风力机功率控制策略进行仿真研究;结合C++语言对Bladed进行二次开发,设计其外部控制器;外部控制器和Bladed进行数据交换,控制风力机功率输出,优化风力机性能。仿真结果表明:在额定风速以下,外部控制器能够追踪最大功率;在额定风速以上,外部控制器能够使输出功率幅值小于采用内置控制器时的输出功率幅值,并使输出功率值稳定在额定值附近;在全负荷最优控制阶段,外部控制器能够根据风速的变化迅速做出调整,实现控制平滑过渡。外部控制器的功率控制性能更优,验证了所提功率控制策略的正确性和可行性。
Aiming at the characteristics of wind turbine operating area, a power control strategy for variable pitch wind turbine is proposed. Taking Bladed as a tool of wind turbine design software, the power control strategy of the wind turbine is simulated. The second development of Bladed is carried out with C ++ language to design its external controller. The external controller exchanges data with Bladed to control the power output of the wind turbine , Optimize wind turbine performance. The simulation results show that the external controller can track the maximum power below the rated wind speed. Above the rated wind speed, the external controller can make the output power amplitude smaller than the output power when using the built-in controller and stabilize the output power at Rated near; at full load optimal control phase, the external controller can quickly make adjustments according to changes in wind speed, to achieve smooth transition control. The external controller’s power control performance is better, which verifies the correctness and feasibility of the proposed power control strategy.