摘要
最大风能捕获在风力发电系统中非常重要,根据定子磁场定向的矢量控制原理,建立了基于变速恒频双馈发电机的风力发电系统的转速控制模型,将自抗扰控制技术引入到最大风能捕获控制中,采用扩张状态观测器对电压方程中的耦合项和电网电压等扰动项进行观测并加以补偿,提高了系统的跟踪性能。在MATLAB/Sinmulink中的仿真表明,系统在不同的风速下有更快的响应速度,对电网电压的波动有较强的抑制能力。
Capture the maximal wind energy is the important technology in the wind turbine generator system. Based on stator-flux-oriented, set up the speed control model of variable speed constant frequency wind power generation system with doubly-fed induction generator, the auto-disturbance rejection control is introduced to capture the maximal wind energy. The extended state observer （ESO） is used to observe and compensate the couplings voltage and the fluctuations of grid voltage so as to improve the system performances. Simulation results in MATLAB/Sinmulink has shown that the system with the auto-disturbance rejection control has the better dynamic performances and the ability in restraining fluctuation of grid voltage than PI system.
出处
《电气自动化》
2009年第4期24-26,共3页
Electrical Automation
关键词
双馈感应电机
变速恒频
定子磁场定向
自抗扰控制
doubly-fed induction machine variable speed constant frequency stator-flux-oriented auto-disturbance rejection control
