Fractional order IMC-PID controller design for the pressurized heavy water reactor
Fractional order IMC-PID controller design for the pressurized heavy water reactor
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DOI：
10.1049/cp.2016.1506
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Sumeet Sagar;S. Kaur;Swati Sondhi
中科院分区：
文献类型：
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作者：
Sumeet Sagar;S. Kaur;Swati Sondhi
加压重水反应堆（PHWR）是一种核动力反应堆，通常使用未浓缩的天然铀作为燃料，重水作为冷却剂和慢化剂。PHWR已成为当今发电行业的重要组成部分。PHWR的运行往往需要在一个有限的小时间间隔内根据不同的负荷条件减少核电功率。这种现象被称为后退状态。因此，为了使PHWR高效工作，具有精确处理退步条件的控制算法是非常重要的。分数阶控制策略是近年来出现的一种非常通用和精确的控制策略。已知分数阶PID （FOPID）控制器在标称以及变化的操作条件下都具有非常稳健的性能。然而，大多数可用于FOPID控制器的设计技术在数学上非常冗长和复杂。因此，本文提出了一种基于内模控制（IMCFOPID）的步退条件下PHWR FOPID控制器设计技术。此外，利用各种积分误差准则将所提控制器的性能与传统的FOPID控制器进行了比较。与传统的FOPID控制器相比，所提出的IMC-FOPID控制器具有更好的性能。
A pressurized heavy water reactor (PHWR) is a nuclear power reactor,that commonly uses unenriched natural uranium as its fuel and heavy water as its coolant and moderator. The PHWR has become an important component of the present day power generation industry. Working of a PHWR may often require reduction of nuclear power within a small finite time interval in accordance to the varying load conditions. This phenomenon is referred to as step back condition. Therefore, for the efficient working of the PHWR it is very important to have a control algorithm that has the capability to handle the step back condition very precisely. The fractional order control strategy has emerged as one of the very versatile and accurate control strategies in the recent times. The fractional order PID (FOPID) controllers are known to give very robust performance both in nominal as well as varying operating conditions. However, most of the design techniques available for the FOPID controllers are mathematically very lengthy and complex. Therefore, in this paper an FOPID controller design technique has been suggested using the concept of internal model control (IMCFOPID) for the PHWR under step back conditions. Further, the performance of the proposed controller has been compared with the conventional FOPID controller using the various integral error criterions. The proposed IMC-FOPID controller is found to give an improved performance as compared to the conventional FOPID controller.