基于模糊-积分控制器的风电变换器控制策略

摘要

针对风力发电场合的特殊需求,此处将模糊自适应控制策略应用在异步全功率风电变换器控制中,以提高控制系统的动态响应特性.详细分析了常规模糊控制策略,设计了模糊-积分复合控制器,以克服常规控制存在稳态误差的不足.结合异步发电机数学模型,阐述了基于模糊-积分复合控制器的系统设计过程.实验结果表明,所设计的控制策略鲁棒性较强,动态响应特性较好,能够满足风力发电对发电机动态响应特性的要求.%For the special needs of wind power generation occasions,a fuzzy adaptive control strategy used in asyn chronous full-power wind power converter to improve the control system dynamic response is presented.A fuzzy-inte gral composite controller is designed to overcome the draw-backs, such as steady-state error.Combined with mathe matical model of induction generator,the design process of control system based on fuzzy-integral composite controller is discussed.The experiment based on 3 kW laboratory simulation system indicates that the presented controller has better robustness, and better dynamic characteristics compared with the traditional vector controller.