双馈风力发电系统最大风能追踪控制

Study on Maximum Wind Energy Tracking of Doubly-Fed Wind-Power Generation System

在分析风力机功率特性和DFIG运行特性的基础上,通过对双馈机转速控制进行最大风能追踪具体过程的深入研究,提出一种基于最大风能追踪的双馈电机有功、无功功率的解耦控制方法。建立了基于发电机定子磁链定向矢量控制的双馈风力发电系统最大风能追踪系统模型,并利用PSCAD/EMTDC对其进行仿真,结果验证了控制策略的正确性。

Based on analyses of the characteristics of the power output of the wind turbine and the operation of DFIG, this paper carries presents our an in-depth study on the specific process of tracking the maximum wind energy by controlling the rotor speed of DFIG, and proposes a decoupling control method of the active and reactive power of DFIG based on the maximum wind energy tracking. In addition, a control system model for tracking the maximum wind energy based on a stator flux-oriented vector control is built and is simulated with PSCAD/EMTDC. The simulation results verify thetestifies feasibility of the control strategy.