基于BDFWG降阶模型的最大风能捕获

Maximum wind energy capture control with order reduction model of brushless doubly-fed wind generator

无刷双馈风力发电系统是一个多时间尺度高维数系统,根据无刷双馈电机的多时间尺度特征,可以得到无刷双馈风力发电系统三种不同的数学模型,即原模型、五阶模型和一阶模型,并且降阶模型与原模型具有一致稳定性。本文根据最大风能捕获原理,利用无刷双馈风力发电系统一阶模型,推导出一种实用型最大风能捕获控制算法。该算法建立在无刷双馈电机降阶模型基础上,与以往控制算法相比,明晰易懂、计算量小、便于操作,是一种实用型的控制算法。

Brushless doubly fed wind generator is system of multi-time scale nature and high dimensionality. In this paper, the nature of multi-time scale of brushless doubly-fed wind generator is discussed, relevant singular perturbed model with three-time scale, fifth-order model and first-order model are built. Based on the theory of maximum wind energy tracking, one kind of utility control algorithm of maximum wind energy tracking is deduced by means of first-order model of brushless doubly-fed wind generator. Comparing with previous control algorithm, this control algorithm is easier for learning and operation, is one kind of utility control algorithm.