Wind power is a cost-effective renewable source and can be smoothly integrated into power grid by incorporating adequate control strategies. The wind turbine prime mover, wind, is uncontrollable which makes it different from conventional generation. Therefore, it becomes very important to carry out investigations on the dynamic behavior of wind power-generating systems. In this paper, the state space model of the system is developed, optimal controllers using full-state feedback control strategy and suboptimal controllers using strip eigenvalue assignment method are designed to study the dynamic behavior of the system. Also, the optimal controllers are designed for various operating conditions using pole placement technique. Following the controller designs, the closed-loop system eigenvalues and dynamic response plots are obtained for various system states considering various operating conditions. The investigations of these reveal that the implementation of optimal controllers offers not only good dynamic performance, but also ensures system dynamic stability.

中文翻译：

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风力发电系统的最优和次优控制器设计

风力发电是一种经济高效的可再生能源，可以通过采用适当的控制策略将其平稳地集成到电网中。风力发电机的原动机风是不可控制的，这使其不同于常规发电机。因此，对风力发电系统的动态行为进行研究变得非常重要。本文开发了系统的状态空间模型，设计了采用全状态反馈控制策略的最优控制器和采用带特征值分配方法的次优控制器，以研究系统的动态行为。此外，最佳的控制器是使用磁极放置技术针对各种运行条件而设计的。按照控制器的设计，在考虑各种操作条件的情况下，获得了针对各种系统状态的闭环系统特征值和动态响应图。对这些问题的研究表明，最佳控制器的实施不仅提供了良好的动态性能，而且还确保了系统动态稳定性。