Second-order sliding-mode control for a pressurized water nuclear reactor considering the xenon concentration feedback

Ansarifar, G.R.; Rafiei, M.

doi:10.1016/j.net.2014.11.003

Cited by 24 publications

(9 citation statements)

References 11 publications

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“…Reddy et al [3] and Munje et al [4] proposed SMC based spatial power control strategies for large heavy water reactors. Qaiser et al [5] and Ansarifar et al [6] proposed second order sliding mode control techniques based on super twisting algorithm for nuclear research reactor.…”

Section: Introductionmentioning

confidence: 99%

Fractional Order Integral Sliding Mode Control for PWR Nuclear Power Plant

Surjagade

Deng

Vajpayee

et al. 2022

2022 European Control Conference (ECC)

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This paper presents a robust control strategy for pressurized water type nuclear power plants by combining the optimal linear quadratic Gaussian control strategy with the fractional-order theory based integral sliding mode control strategy. The proposed control scheme follows the reference set-point effectively in spite of the presence of uncertainties in the system by spending minimal control efforts. The nonlinear nuclear power plant model adopted in this study is characterized by 38 state variables. The non-linear model is first linearised around steady state operating point to obtain a linear model for which a proposed control strategy is designed. Stability of the closed-loop system is proved with the help of Lyapunov theory. Finally, efficacy of the proposed control scheme for different control loops of the nuclear power plant is demonstrated through simulations and compared with conventional techniques.

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Section: Introductionmentioning

confidence: 99%

Fractional Order Integral Sliding Mode Control for PWR Nuclear Power Plant

Surjagade

Deng

Vajpayee

et al. 2022

2022 European Control Conference (ECC)

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“…In the literature, STA-based observers as well as controllers have been effectively applied to the problem of nuclear reactor [15,16,17,18,19,20]. In [15], authors proposed a higher order sliding mode observer based on STA to estimate the xenon and samarium concentration in PWR nuclear reactor considering the multi-point reactor model.…”

Section: Introductionmentioning

confidence: 99%

An arbitrary-order continuous sliding mode control technique for nonlinear PWR-type nuclear power plants

Surjagade

Deng

Vajpayee

et al. 2022

Progress in Nuclear Energy

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“…In general, the rod drive dynamics (control rod position dynamics) is assumed to be ideal which represents by a pure integral function in mathematical form [14][15][16][17][18][19][20]. To ensure the rapid process of the rod selection, the conventional CRSA is established by the simplest form of logical sequence control rod movement based on the rod position regardless of the control rod worth value.…”

Section: Introductionmentioning

confidence: 99%

An improved control rod selection algorithm for core power control at TRIGA PUSPATI Reactor

Minhat

Subha

Hassan

et al. 2020

JMES

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The 1 MWth TRIGA PUSPATI Reactor known as RTP undergoes more than 37 years of operation in Malaysia. The current core power control utilized Feedback Control Algorithm (FCA) and a conventional Control Rod Selection Algorithm (CRSA). However, the current power tracking performance suffers and increase the workload on Control Rod Drive Mechanism (CRDM) if the range between minimum and maximum rod worth value for each control rod has a significant difference. Thus, it is requiring much time to keep the core power stable at the power demand value within the acceptable error bands for the safety requirement of the RTP. In conventional CRSA, regardless of the rod worth value, the lowest position of the control rod is selected for up-movement to regulate the reactor power with 2% chattering error. To improve this method, a new CRSA is introduced named Single Control Absorbing Rod (SCAR). In SCAR, only one rod with highest reactivity worth value will be selected for coast tuning during transient and the lowest reactivity worth value will be selected for fine-tuning rod movement during steady-state. The simulation model of the reactor core is represented based on point kinetics model, thermal-hydraulic models and reactivity model. The conventional CRSA model included with control rod position dynamic model and actual reactivity worth curve data from RTP. The FCA controller is designed based on Proportional-Integral (PI) controller using MATLAB Simulink simulation. The core power control system is represented by the integration of a reactor core model, CRSA model and FCA controller. To manifest the effectiveness of the proposed SCAR algorithm, the results are compared to the conventional CRSA in both simulation and experimentation. Overall, the results shows that the SCAR algorithm offers generally better results than the conventional CRSA with the reduction in rising time up to 44%, workload up to 35%, settling time up to 26% and chattering error up to 18% of the nominal value.

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Second-order sliding-mode control for a pressurized water nuclear reactor considering the xenon concentration feedback

Cited by 24 publications

References 11 publications

Fractional Order Integral Sliding Mode Control for PWR Nuclear Power Plant

Fractional Order Integral Sliding Mode Control for PWR Nuclear Power Plant

An arbitrary-order continuous sliding mode control technique for nonlinear PWR-type nuclear power plants

An improved control rod selection algorithm for core power control at TRIGA PUSPATI Reactor

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