双馈异步风力发电机的矢量控制

Vector Control of Doubly-Fed Asynchronous Wind Generator

摘要: 本文通过研究双馈异步风力发电机的控制策略，来实现双馈风力发电机的变速恒频，并对其运行过程进行仿真分析。文中根据建立的双馈风力发电机数学模型研究其控制策略，本文研究的是转子侧基于定子电压定向的控制策略，对双馈异步风力发电机定子侧输出的有功和无功功率进行解耦控制。和转子侧基于定子磁链定向的控制策略相比，这种控制方法减少了定子磁链的计算，减小了误差。通过此控制方式，使用Matlab/Simulink软件搭建了双馈异步风力发电机的仿真模型，通过仿真验证了该控制策略可以有效地对有功和无功进行独立控制。

Abstract: In this paper, by studying the control strategy of doubly-fed asynchronous wind generator, the var-iable speed and fixed frequency of doubly-fed wind generator is realized, and its operation process is simulated and analyzed. In this paper, the control strategy of doubly-fed wind turbine is studied according to the established mathematical model, and the rotor-side control strategy based on sta-tor voltage orientation is studied to decouple the effective and reactive power output of doubly-fed asynchronous wind turbine. Compared with the control strategy based on stator flux orientation on the rotor side, this control method reduces the calculation of stator flux and reduces the error. Through this control mode, the simulation model of doubly-fed asynchronous wind generator is es-tablished by using Matlab/Simulink software. The simulation results show that the control strategy is effective and effective and can control reactive power independently.