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首页> 外文期刊>Annals of nuclear energy >Sliding mode control design for a PWR nuclear reactor using sliding mode observer during load following operation
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Sliding mode control design for a PWR nuclear reactor using sliding mode observer during load following operation

机译：负荷跟踪运行期间使用滑模观测器的压水堆核反应堆的滑模控制设计

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摘要

Reactor power control is one of the most important problems in a nuclear power plant. In this paper, a sliding mode control system which is a robust nonlinear controller is designed to control the Pressur-ized-Water Nuclear Reactor (PWR) Power. The reactor core is simulated based on the point kinetics equations and three delayed neutron groups. Considering neutron absorber poisons and regarding the limitations of the xenon concentration and delayed neutron precursors densities measurement, a sliding mode observer is designed to estimate their values and finally a sliding mode control based on the sliding mode observer is presented to control the reactor core power. The stability analysis is given by means Lyapunov approach, thus the control system is guaranteed to be stable within a large range. The employed method is easy to implement in practical applications and moreover, the sliding mode control exhibits the desired dynamic properties during the entire output-tracking process independent of perturbations. Simulation results are presented to demonstrate the effectiveness of the proposed controller in terms of performance, robustness and stability.
机译：反应堆功率控制是核电站中最重要的问题之一。本文设计了一种具有鲁棒非线性控制器的滑模控制系统，以控制压水核反应堆（PWR）的功率。基于点动力学方程和三个延迟中子群，对反应堆堆芯进行了仿真。考虑到中子吸收剂中毒，并考虑到氙浓度的局限性和中子前驱物密度测量的延迟，设计了滑模观测器来估算其值，最后提出了基于滑模观测器的滑模控制来控制反应堆堆芯功率。通过Lyapunov方法进行稳定性分析，从而确保控制系统在较大范围内保持稳定。所采用的方法易于在实际应用中实施，此外，滑模控制在整个输出跟踪过程中均表现出所需的动态特性，而与扰动无关。仿真结果表明了所提出的控制器在性能，鲁棒性和稳定性方面的有效性。

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