考虑铁耗的双馈电机风力发电最优控制

由于双馈电机内部铁耗的存在,一般的无铁耗双馈电机数学模型将无法分析双馈风力发电向电网输送的最大电能。这里将从双馈电机的定、转子铁耗出发,建立在d,q旋转坐标系下,考虑铁耗的双馈电机状态模型,并通过矢量控制来实现追踪最大风能输入和最高电能反馈电网的最优控制策略。这里也将采用模糊控制技术来替代传统的PID控制。通过Matlab/Simulink对系统进行仿真,验证了提出的控制策略的正确性,同时证明了系统在风速变化下具有良好的动态调节性。

The Optimal Control Strategy for the Doubly-fed Wind Power System Taking Iron-loss Into Account

The existing of DFIG iron loss leads to the fact that ordinary DFIG mathematical model can’t analysis the maximum power which is fed back to the grid by the doubly-fed wind power system.The DFIG mathematical model is built which can realize the optimal control while considering iron loss in the d,q rotating reference frame.As well it will take the fuzzy control technique instead of the traditional PID control.The correctness and good dynamic adjusting of this optimal control strategy is proved by Matlab/Simulink.