风电机组无传感器功率追踪控制策略

Wind turbine sensorless power tracking control strategy

针对传统最佳叶尖速比风能追踪方法需要准确测量风速的问题,从风电机组输出电功率的角度出发,提出了一种基于风速预估的改进叶尖速比风能追踪控制策略.根据风电机组的转速和输出电功率求解验证预估风速,进而实现无传感器叶尖速比风能追踪.仿真结果表明,所提出的改进叶尖速比控制策略在无风速传感器的情况下仍具有良好的追踪精度,同时具有较好的实时性和鲁棒性,能降低测量风速对叶尖速比控制性能的影响,证明了所提出控制策略的有效性.

Aiming at the problem that the traditional optimal tip speed ratio wind energy tracking methods need to accurately measure the wind speed,an improved tip speed ratio wind energy tracking control strategy based on the wind speed prediction from the perspective of the output electric power of wind turbine was proposed. The predicted wind speed was solved and verified according to the wind turbine speed and output electric power,and then the sensorless tip speed ratio wind energy tracking was further achieved. The simulation results showthat the proposed improved tip speed ratio control strategy without the wind speed sensor has good tracking accuracy,real time performance and robustness,and can reduce the effect of measured wind speed on the control performance of tip speed ratio,which proves the effectiveness of proposed control strategy.