双馈感应风力发电系统的无源性控制方法研究  

Study on Passivity-based Control Strategies of Doubly Fed Induction Wind Power Generator Systems

作　　者：潘艳霞[1] 薛花[2] 

机构地区：[1]山西省电力公司电力交易中心,太原030001 [2]上海电力学院电力工程系,上海200090

出　　处：《电力学报》2011年第6期453-457,共5页Journal of Electric Power

基　　金：国家自然科学基金项目(51007053)

摘　　要：根据交流励磁变速恒频发电系统的运行原理,从能量平衡关系出发,利用非线性控制理论,提出了新型的双馈感应风力发电机自适应控制方法。基于双馈感应风力发电机Euler-Lagrange系统模型,设计本质上是非线性反馈的无源性控制策略,实现负载转矩时变未知情形下磁链、转速的渐近跟踪控制。该方法从能量角度分析双馈感应风力发电系统,确定不必抵消的"无功力",设计全局定义的控制律,具有形式简单、无奇异点、鲁棒性好的特点。基于dSPACE的实验结果证明了该控制策略的有效性。Due to its great potential value in applications and theory,nonlinear control strategies of variable speed constant frequency（VSCF） generator systems,especially passivity-based control（PBC） methods,have been a focus in the literature.The main purpose of this paper is to develop a control algorithm that forces the doubly fed induction generator（DFIG） to track reference flux and speed trajectories with time-varying load torque.To achieve this,an adaptive PBC method based on Euler-Lagrange（EL） system is developed.The key point with this method is the identification of terms, known as workless forces,which appear in the dynamic equations of DFIG but do not have any effect on the energy balance equation of the closed loop.This leads to a simple control structure and enhances the robustness of the control system.The reasonability and validity is testified by the experimental results based on dSPACE.

关 键 词：无源性控制 双馈感应风力发电机 Euler-Lagrange系统 

分 类 号：TM310[电气工程—电机]