双馈风力发电机的精确线性化解耦控制  

Exact linearization control scheme of DFIG

作　　者：郭家虎[1,2] 张鲁华[1] 蔡旭[1] 

机构地区：[1]上海交通大学风力发电研究中心,上海200240 [2]安徽理工大学自动化系,安徽淮南232001

出　　处：《电机与控制学报》2009年第1期57-62,共6页Electric Machines and Control

基　　金：安徽高校省级自然科学研究项目(KJ2007B006);上海市科教兴市项目(05DZ12001)

摘　　要：针对基于近似线性化模型的双闭环矢量控制稳定性差、抗扰能力弱的缺点,应用多变量非线性控制理论,对并网型双馈风力发电机进行了精确线性化解耦控制研究。在建立双馈发电机空间状态方程的基础上,运用逆系统方法将双馈发电机精确线性化成有功功率和无功功率两个一阶线性子系统,并运用内模控制理论对其进行综合以提高系统的鲁棒性,提出了并网型双馈风力发电机的逆系统内模控制策略,并进行了实验验证。结果表明,该控制策略可以实现双馈发电机有功功率和无功功率的完全解耦,并具有更高的控制精确度和稳定性。The traditional vector control of double fed induction generator （DFIG） based on simplified model has no good performance and can not guarantee a sufficient stability region in the state space. In this paper, a novel control strategy by internal model control based on the inverse system theory was proposed. On the basis of on nonlinear mathematical model of DFIG which developed with state variables, the border inverse system of DFIG was derived and a pseudo linear system was obtained with inverse system method. The Internal Model Control （IMC） was used for the pseudo linear system to improve the robustness. This contro strategy was able to decouple the active and reactive stator current allowing the independent control of the active power and reactive power of DFIG with a sufficient stability region in the state space. The experimental results verified the validity of the proposed control strategy.

关 键 词：双馈发电机 解耦控制 逆系统理论 内模控制 精确线性化 

分 类 号：TM315[电气工程—电机]