基于自建永磁直驱风电机组数学模型的三种MPPT控制模式的比较研究

Comparative Research of Three MPPT Control Strategies Based on Self-established PMSG Model

基于不同的控制量,风电机组的最大功率跟踪控制方法有多种不同的实现方法。在自建永磁同步发电机和双PWM变流器数学模型的基础上,构建以永磁同步发电机转速信号、叶尖速比信号和功率信号为控制对象的三种最大风力跟踪(MPPT)发电控制模型。利用PSCAD/EMTDC仿真平台对三种模型进行仿真分析与对比,验证了模型的有效性与各控制方式的优缺点。

Various forms of maximum power point tracking（MPPT） exist based on different variables. Three dynamic models of permanent magnet synchronous generator （ PMSG ） are established respectively on the basis of turbine speed, tip speed ratio and power as control variables. The validities of the three established models and proposed con- trol stralegies are demonstrated by simulation system under the software platform of PSCAD/ EMTDC and the opera- tion performances of the three control strategies are compared.