摘  要：应用H∞控制理论为双馈型风力发电机系统设计了功率跟踪控制器，以保证风力发电机有功、无功功率能跟踪给定的期望值曲线。期望值曲线是根据风速大小、转子所允许的最大转速和额定功率划分为3个不同的运行区域给出的，以保证在3个运行区域风力发电机都能最大程度地获取风能，同时又可安全可靠运行。H∞控制理论可以解决干扰抑制、鲁棒稳定、信号跟踪等问题。仿真表明，所设计的控制器能驱使闭环风力发电机系统在整个运行过程中很好地跟踪所给定的功率期望值曲线，从而实现了最大风能利用且安全运行的目的。
关键词：风力发电机； 双馈型；功率期望值跟踪；H∞控制器

Abstract: A H∞ controller of power  tracking was investigated for doubly-fed wind power generator to guarantee the active and reactive power to track the desired power curves in this paper．The desired power curves were given based on the three operation modes of the motor power associated with wind speed，maximum allowable rotor speed and rated power，in which the wind power was extracted maximally and meanwhile the system was maintained to operate safely．Both the theory of H∞ control and simulation illustration show that the proposed controller can render the resulting closed-loop system to have better tracking performance for the given desired power so as to achieve the design objective of maximal extraction of wind power and safe operation．
Key words: wind generator；doubly-fed；power tracking；H∞ control