基于自抗扰解耦的变速恒频风力发电功率控制系统  

Power Control Strategy Based on Auto-disturbance Rejection Decoupling for a Variable Speed Constant Frequency Generation System

作　　者：张先勇[1] 吴捷[1] 杨金明[1] 

机构地区：[1]华南理工大学

出　　处：《电气传动》2007年第2期8-11,35,共5页Electric Drive

基　　金：国家自然科学基金重点项目(60534040);广东省自然科学基金(020906)

摘　　要：建立了基于变换器励磁的双馈感应电机的变速恒频风力发电功率控制系统的模型。将现代控制理论中的自抗扰控制引入双馈感应发电机有功与无功功率的解耦控制,将有功功率与无功功率的控制作为两个独立的子系统进行设计。该系统不仅能够跟踪风轮的最佳转矩速度曲线实现最大风能捕获,还能够独立提供电网无功功率。仿真结果展现了基于自抗扰解耦的变速恒频风力发电功率控制系统的优良特性,验证了控制策略的有效性。A variable speed constant frequency wind power generation system of doubly-fed induction generator based on converter excitation was described. The whole system is divided into two subsystems. A new robust controller based on the auto-disturbance rejection theory is designed for the decoupling control of active and reactive power of the doubly-fed generator. The optimal torque -speed profile of the turbine can be followed, so the system can capture the maximum wind power and provide reactive power for the grid. Simulation results demonstrate the good performance of the system and verify the control strategy＇s feasibility.

关 键 词：双馈感应电机 有功功率 无功功率 自抗扰控制 风力发电系统 

分 类 号：TM614[电气工程—电力系统及自动化]