双馈异步风力发电机组控制器参数的优化整定

摘要

Taking wind power generating system based on doubly-fed induction generator as a study object,this paper intro-duces double-fed induction generator and relevant controller model. Using rotator flux linkage oriented control theory and DFIG numerical model under d-q coordinate system,control strategy for rotor pulse width modulation converter was de-signed. According to double closed-loop control structure of the control strategy,setting calculation method for proportion-al-integral parameters of current inside loop and voltage outside loop were proposed. By using particle swarm optimization algorithm,controller parameters at generator side were optimized. On account of simulation and its result,dynamic response result of the system was analyzed and conclusion was verified which proved good control effectiveness of the controller.%以基于双馈感应电机的风力发电系统为研究对象,介绍双馈异步发电机(doubly fed induction generator, DFIG)及相应控制器模型,运用定子磁链定向控制理论和 d-q 坐标系下 DFIG 的数学模型,设计出转子侧脉冲宽度调制(pulse width modulation,PWM)变流器的控制策略,根据控制策略的双闭环控制结构,给出了电流内环和电压外环的比例-积分(proportional-integral,PI)参数整定计算方法。采用粒子群(particle swarm optimi-zation,PSO)算法,对机侧控制器参数进行优化,并进行仿真以及仿真结果验证,分析其系统动态响应结果,仿真结果控制器控制效果良好。