中文摘要：

风力发电系统是典型的强耦合非线性随机系统．针对永磁同步风力发电系统的随机最优控制问题，建立了系统的非线性动态模型；然后，采用逆系统方法设计了反馈线性化控制器，将永磁同步风力发电系统转化为具有线性传递关系且已解耦的伪线性系统；最后，考虑风速随机性并设计了线性二次型高斯随机最优控制器．仿真结果验证了所提控制策略的有效性．

英文摘要：

The wind power generation systems are typical strong coupling, nonlinear and stochastic. For the optimal stochastic control of the system, this paper proposes a nonlinear system dynamic model for the system. Then the feedback linearization controller is designed by using the inverse system method and the considered system is transformed to a decoupled pseudo-linear system. Finally, with the consideration of the randomness of wind speed, a linear quadratic Gaussian stochastic optimal controller is put forward. The simulation results demonstrate the effectiveness of the proposed control scheme.