分析了风力机特性、永磁直驱电机模型、变换器控制策略及各种功率跟踪控制算法优缺点,并提出一种基于爬山搜索法的最大功率点跟踪(MPPT)控制方法的优化。在MATLAB/Simulink环境下搭建了永磁直驱风力发电系统模型,仿真分析了控制方法对最大功率点的跟踪效果,结果表明当风机起动及风速变化时MPPT控制方法能够使系统快速稳定在新的工作点,捕获得最大功率。由此验证了改进优化后的控制方法及所搭建模型的准确性与有效性。

The characteristics of wind turbine, permanent magnet direct drive motor model, converter control strategy and the advantages and disadvantages of various power tracking control algorithms were analyzed. An optimization of maximum power point tracking (MPPT) control based on climbing search was proposed. The permanent magnet direct drive wind power generation system model was established and the tracking effect of the control method on the maximum power point was simulated by using MATLAB/Simulink. The result showed that the tracking control method could made the system get to new operating point fast and steady when the wind tubine starts or the wind speed changes and it could capture the maximum power of the wind energy. The control method and the correctness and effectiveness of the model had been verified.

TM 641

国家科技支撑计划项目子课题(2013BAF02B04)；河北省科技计划项目(14214503D)；天津市科技特派员项目(16JCTPJC50700)