双馈风力发电机变换器的控制方法研究

本文主要研究了双馈感应电机(DFIG)的网侧和转子侧变换器的控制方法。双馈感应电机中转子侧变换器采用定子磁链定向矢量控制技术,实现了风能的最大跟踪以及有功功率和无功功率的解耦控制。网侧变换器采用电网电压定向矢量控制技术,控制了直流母线电压的恒定以及调节了网侧的功率因素。采用PSCAD/EMTDC电力系统仿真软件,构建了包括风速模型、风力机模型、变速恒频双馈电机、定子侧和转子侧变换器在内的双馈风力发电机仿真模型。仿真实验结果表明,所提方法是有效、合理的。

The Study of the Control Method for the Doubly Fed Wind Generator Converter

The method to control the converters at both grid side & rotor side of the doubly fed induction generator(DFIG) is mainly studied in this paper.The converter at the rotor side of the doubly fed induction generator applies stator flux linkage oriented vector control technology to realize the maximum tracking of wind-energy and decoupling control of both active power & reactive power.The converter at the net side applies grid voltage oriented vector controlling technology to control the constancy of the DC bus voltage and regulate the power factors of the net side.Power system simulation software PSCAD/EMTDC is applied to build a doubly fed wind generator simulation model including wind speed model,wind turbine model,VSCF doubly-fed machine and the converters at both the stator side & the rotor-side.The simulation results show that the proposed method is effective and reasonable.