双馈异步风力发电机组运行特性仿真分析

Simulation Analysis on the Operation Characteristics of Doubly-Fed Induction Generator-based Wind Generation System

在分析双馈异步风力发电机组整体模型结构的基础上,引入了交流励磁变速恒频风力发电系统中基于定子磁链定向和定子电压定向的矢量变换控制技术,针对双馈风力发电机的变速恒频、最大风能捕获和有功无功解耦运行的需求,建立基于PSCAD/EMTDC软件的双馈异步风力发电机组仿真模型。仿真结果验证了模型在实现追踪最大风能的变化和有功、无功解耦控制功能上的有效性。

By analyzing the detailed models of doubly fed induction generator （DFIG） wind turbines, a dynamic simulation model were established on the basis of the operation principle of AC-excited variable-speed constant-frequency wind power generation system, the stator flux field oriented control and stator voltage vector oriented control technology. The system model proposed in this paper was developed in the dedicated power electronics and system simulation tool, PSCAD/EMTDC. Based on the simulation results, it was proved that the proposed DFIG is capable of simultaneous capturing maximum power ofwind energy, achieving the variable speed generation and the decoupled control of active and reactive powers.