为解决液压型风力发电机组风能利用率问题,以机组输出功率最佳为控制目标,研究机组最佳功率追踪控制方法。建立了风力机特性数学模型和液压主传动系统数学模型,在数学模型的基础上提出了一种用直接风力机转速控制的最佳功率追踪控制方法,并对其控制率进行推导与分析。以30 k VA液压型风力发电机组实验台为基础,针对所提出的最佳功率追踪控制方法进行仿真与实验研究,结果表明该控制方法具有良好的控制效果。
Taking a hydraulic turbine as the research object,in order to solve the problem of utilization for wind energy,we research the maximum power point tracking( MPPT) control method aiming at maximum output power.The mathematical models for wind turbine characteristics and hydraulic main transmission system are established. A MPPT control method is proposed based on direct control for wind turbine speed. The control rate for the method is derived and analyzed. The simulation and experimental study are conducted for the proposed MPPT control method based on the 30 k VA hydraulic turbine experiment platform. The results show that the control method has a good control effect.