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Saturated Adaptive Output-Feedback Power-Level Control for Modular High Temperature Gas-Cooled Reactors

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  • Zhe Dong

    (Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
    Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education of China, Beijing 100084, China)

Abstract

Small modular reactors (SMRs) are those nuclear fission reactors with electrical output powers of less than 300 MW e . Due to its inherent safety features, the modular high temperature gas-cooled reactor (MHTGR) has been seen as one of the best candidates for building SMR-based nuclear plants with high safety-level and economical competitive power. Power-level control is crucial in providing grid-appropriation for all types of SMRs. Usually, there exists nonlinearity, parameter uncertainty and control input saturation in the SMR-based plant dynamics. Motivated by this, a novel saturated adaptive output-feedback power-level control of the MHTGR is proposed in this paper. This newly-built control law has the virtues of having relatively neat form, of being strong adaptive to parameter uncertainty and of being able to compensate control input saturation, which are given by constructing Lyapunov functions based upon the shifted-ectropies of neutron kinetics and reactor thermal-hydraulics, giving an online tuning algorithm for the controller parameters and proposing a control input saturation compensator respectively. It is proved theoretically that input-to-state stability (ISS) can be guaranteed for the corresponding closed-loop system. In order to verify the theoretical results, this new control strategy is then applied to the large-range power maneuvering control for the MHTGR of the HTR-PM plant. Numerical simulation results show not only the relationship between regulating performance and control input saturation bound but also the feasibility of applying this saturated adaptive control law practically.

Suggested Citation

  • Zhe Dong, 2014. "Saturated Adaptive Output-Feedback Power-Level Control for Modular High Temperature Gas-Cooled Reactors," Energies, MDPI, vol. 7(11), pages 1-20, November.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:11:p:7620-7639:d:42524
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    References listed on IDEAS

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    1. Vujić, Jasmina & Bergmann, Ryan M. & Škoda, Radek & Miletić, Marija, 2012. "Small modular reactors: Simpler, safer, cheaper?," Energy, Elsevier, vol. 45(1), pages 288-295.
    2. Zhe Dong, 2014. "An Artificial Neural Network Compensated Output Feedback Power-Level Control for Modular High Temperature Gas-Cooled Reactors," Energies, MDPI, vol. 7(3), pages 1-22, February.
    3. Zhe Dong, 2012. "Dynamic Output Feedback Power-Level Control for the MHTGR Based On Iterative Damping Assignment," Energies, MDPI, vol. 5(6), pages 1-34, June.
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    Cited by:

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    2. Yangbo Zheng & Ni Mo & Zhe Sun & Yan Zhou & Zhengang Shi, 2019. "Study on Unbalanced Magnetic Pulling Analysis and Its Control Method for Primary Helium Circulator of High-Temperature Gas-Cooled Reactor," Energies, MDPI, vol. 12(19), pages 1-17, September.

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