Abstract The substantial portion of the existing power generation comes from Pressurized Heavy Water Reactor (PHWR). However, PHWR is a nonlinear and high order system and designing a controller for such a high order system is not an easy task. Therefore, it is required to design a controller for a reduced order PHWR system which will give the same response as that on the original higher order system. The focus of the present research endeavor is to propose a design methodology for a fractional-order proportional integral derivative controller for the power control of reduced order PHWR system. The reduced order models of PHWR have been obtained using Balanced Truncation method and a robust FOPID controller has been designed using the stability boundary locus method with specific gain-phase margin. The simulation results illustrate a better set point tracking performance with the use of proposed FOPID controller at 30% control drop and varied initial power levels.

中文翻译：

---

基于降阶模型的 FOPID 控制器设计用于具有特定增益相位裕度的加压重水反应堆功率控制

摘要 现有发电的很大一部分来自加压重水反应堆（PHWR）。然而，PHWR 是一个非线性的高阶系统，为这样一个高阶系统设计一个控制器并不是一件容易的事。因此，需要为降阶 PHWR 系统设计一个控制器，该控制器将给出与原始高阶系统相同的响应。目前研究工作的重点是提出一种用于降阶 PHWR 系统功率控制的分数阶比例积分微分控制器的设计方法。PHWR 的降阶模型已经使用平衡截断方法获得，并且已经使用具有特定增益相位裕度的稳定性边界轨迹方法设计了稳健的 FOPID 控制器。