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:根据风速的多时间尺度特性,在风能转换系统非线性机理模型的基础上,建立风能转换系统的双频模型;并设计了双频环优化控制器,其中低频环采用PI稳态优化控制方法;高频环采用H_2/H∞状态反馈的多目标优化控制。仿真结果表明,基于H_2/H_∞状态反馈的风能转换系统的双频环优化控制方法是有效的,并在多个控制指标之间进行折衷处理。
: Based on the multi-time scale characteristics of wind speed, a dual-frequency model of wind energy conversion system is established on the basis of the nonlinear mechanism model of wind energy conversion system. A dual-frequency loop optimization controller is designed, in which the low-frequency loop adopts PI steady- ; Multi-objective optimal control of high-frequency loop using H_2 / H∞ state feedback. The simulation results show that the dual frequency loop optimization control method based on H_2 / H_∞ state feedback of wind energy conversion system is effective and trade-off between multiple control indexes.