Power-pressure coordinated control of modular high temperature gas-cooled reactors

Article Thermodynamics

A fault diagnosis method for small pressurized water reactors based on long short-term memory networks

Pengfei Wang et al.

Summary: This study proposes a sensor and actuator fault diagnosis method for small pressurized water reactors, using LSTM networks to achieve end-to-end fault diagnosis with an accuracy of 92.06% and strong noise immunity capability.

ENERGY (2022)

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Article Thermodynamics

Feedforward-decoupled closed-loop fuzzy proportion-integral-derivative control of air supply system of proton exchange membrane fuel cell

Zhao Liu et al.

Summary: In this study, a fuzzy PID controller combined with a feedforward decoupling method was designed to optimize the control strategy of the PEMFC air supply system. Independent control of air flow and pressure was achieved through decoupling control, and better dynamic response and stability were achieved through the fuzzy PID controller, thereby improving the system performance.

ENERGY (2022)

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Article Thermodynamics

Load following control of a pressurized water reactor via finite-time super-twisting sliding mode and extended state observer techniques

Jiuwu Hui et al.

Summary: This paper proposes a method for load following of a PWR in the presence of compound disturbances by designing an ESO and FTSTSMC to improve system performance and handle estimation errors, achieving better tracking performance compared to other controllers.

ENERGY (2022)

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Article Thermodynamics

Economic optimization for process transition based on redundant control variables in the framework of zone model predictive control

Xin Wan et al.

Summary: This study proposes an optimization strategy based on redundant control variables under the zone control framework to improve economic optimization effect. By designing two different optimization strategies to avoid controller switching at the boundary of the zone control target, the study achieved greater economic benefits compared to previous research.

ENERGY (2022)

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Article Thermodynamics

Multi-input model predictive speed control of lean-burn natural gas engine in range-extended electric vehicles

Wenyu Xiong et al.

Summary: The study proposes a multi-input model predictive speed control strategy for lean-burn natural gas engines in a range extender, aiming to improve the system's responsiveness and anti-disturbance capability by introducing an air-fuel ratio (AFR) additional torque. The approach effectively addresses the challenges of insufficient engine torque and degraded performance in engine speed tracking systems.

ENERGY (2022)

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Article Thermodynamics

Control of the temperature in the hot liquid tank by using a digital PID controller considering the random errors of the thermometer indications

Dawid Taler et al.

Summary: A digital PID controller is proposed to maintain a constant hot water temperature in the tank. The water temperature is determined by solving the inverse problem for a thermometer and digital filters are used to increase the stability and accuracy of the controller.

ENERGY (2022)

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Article Thermodynamics

Reduction of the CO emission from wood pellet small-scale boiler using model-based control

Rafal Stanislawski et al.

Summary: This paper presents a new approach to reduce CO emissions in exhaust gases from small-scale wood pellet boilers. By controlling the airflow and using a nonlinear predictive controller, significant reduction of CO emissions can be achieved without modifying the boiler design. The findings demonstrate the effectiveness and low implementation cost of this control algorithm.

ENERGY (2022)

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Article Thermodynamics

Dual-mode fast DMC algorithm for the control of ORC based waste heat recovery system

Yao Shi et al.

Summary: This article proposes a dual-mode fast dynamic matrix control (FDMC) algorithm based on singular value decomposition (SVD) and dynamic matrix control (DMC) to address the issue of long computation time in model predictive control (MPC) for organic Rankine cycle (ORC) systems. The simulations demonstrate the effectiveness and rapidity of the proposed algorithm in ensuring tracking performance while improving calculation speed.

ENERGY (2022)

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Article Thermodynamics

Flexible control of nuclear cogeneration plants for balancing intermittent renewables

Zhe Dong et al.

Summary: Intermittent renewable energy and nuclear energy can both provide carbon-free electric power to the grid, with the advantage of complementarity. Establishing nuclear-renewable hybrid energy systems can offer a flexible solution for grid balance.

ENERGY (2021)

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Article Thermodynamics

Coordinated control system modeling of ultra-supercritical unit based on a new fuzzy neural network

Guolian Hou et al.

Summary: A new fuzzy neural network modeling method is proposed in this study to accurately model the ultra-supercritical thermal power unit, meeting the requirements of operational stability and economy. The method shows satisfactory accuracy when applied to a 1000 MW unit in China, with numerical and graphical simulation results confirming its effectiveness.

ENERGY (2021)

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Article Nuclear Science & Technology

Application of model free active disturbance rejection controller in nuclear reactor power control

Aodi Sun et al.

Summary: This study compares the control performance of PID and MF-ADRC in nuclear power control, and the results show that MF-ADRC performs better in terms of overshoot and settling time.

PROGRESS IN NUCLEAR ENERGY (2021)

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Review Green & Sustainable Science & Technology

Review of integration of small modular reactors in renewable energy microgrids

D. Michaelson et al.

Summary: Integration of renewable energy sources in microgrids can enhance system resilience and reduce carbon emissions, but the intermittent nature of renewables requires energy storage to compensate for supply-demand imbalances. Traditional energy storage can be costly, thus introducing new technologies like small modular reactors as alternatives to traditional power sources is feasible.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2021)

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Article Thermodynamics

Chattering-free higher order sliding mode controller with a high-gain observer for the load following of a pressurized water reactor

Jiuwu Hui et al.

Summary: A chattering-free higher order sliding mode control scheme with a high-gain observer is proposed for the load following of nuclear power plants. The scheme improves load-following performance by accurately estimating unmeasured states and dealing with lumped disturbances. The controller shows smoother control input, higher load-following accuracy, and stronger robustness compared to PID and conventional sliding mode controllers.

ENERGY (2021)

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Article Mathematics

Robust Model Predictive Control Paradigm for Automatic Voltage Regulators against Uncertainty Based on Optimization Algorithms

Mahmoud Elsisi et al.

Summary: This paper presents a robust model predictive controller for automatic voltage regulator, using a new evolutionary algorithm to optimize control parameters for better performance of AVR. The study demonstrates that this strategy is more effective in stability and control effort compared to other techniques.

MATHEMATICS (2021)

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Article Nuclear Science & Technology

A differentiator based second-order sliding-mode control of a pressurized water nuclear research reactor considering Xenon concentration feedback

Kamal Kayode Abdulraheem et al.

Summary: This paper introduces a novel Twisting control algorithm that successfully applies the second-order sliding-mode control scheme in power control and regulation of a nuclear reactor. Simulation results demonstrate that the algorithm ensures stability, robustness against external disturbances, insensitivity to parameter variations, and meets the desired performance specifications in the closed-loop control system.

ANNALS OF NUCLEAR ENERGY (2021)

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Article Thermodynamics

Optimization and control of battery-flywheel compound energy storage system during an electric vehicle braking

Wei Wang et al.

Summary: By combining the advantages of battery and flywheel systems, mathematical models for a battery-flywheel compound energy storage system were established. An energy optimization method based on GA and a double neural networks-based adaptive PI vector control method were proposed to optimize energy recovery, current distribution, and flywheel motor speed regulation, improving overall energy efficiency and system stability.

ENERGY (2021)

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Article Thermodynamics

An active disturbance rejection control design with actuator rate limit compensation for the ALSTOM gasifier benchmark problem

Zhenlong Wu et al.

Summary: This paper proposes a new control structure that combines active disturbance rejection control (ADRC) and actuator rate limit compensation, which shows superiority in dealing with gasifier problems, especially being the least sensitive to rate limit uncertainties.

ENERGY (2021)

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Article Engineering, Electrical & Electronic

Proportional-Integral Extended State Observer for Monitoring Nuclear Reactors

Zhe Dong et al.

Summary: A Proportional-Integral Extended State Observer (PI-ESO) is proposed for disturbance estimation in nuclear reactors, providing bounded estimation for reactor process variables and total disturbances. This newly built PI-ESO is applied to reconstruct both unmeasurable state variables and total disturbances of a nuclear heating reactor (NHR), showing satisfactory performance and the influence of observer parameters through numerical simulation results.

IEEE TRANSACTIONS ON NUCLEAR SCIENCE (2021)

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Article Nuclear Science & Technology

New design of variable structure control based on lightning search algorithm for nuclear reactor power system considering load-following operation

M. Elsisi et al.

NUCLEAR ENGINEERING AND TECHNOLOGY (2020)

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Article Energy & Fuels

New design of robust PID controller based on meta-heuristic algorithms for wind energy conversion system

Mahmoud Elsisi

WIND ENERGY (2020)

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Article Thermodynamics

Dynamic matrix control for thermal power of multi-modular high temperature gas-cooled reactor plants

Di Jiang et al.

ENERGY (2020)

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Article Thermodynamics

Fuzzy modeling and fast model predictive control of gas turbine system

Guolian Hou et al.

ENERGY (2020)

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Article Engineering, Electrical & Electronic

Integral Sliding Mode for Power Distribution Control of Advanced Heavy Water Reactor

R. J. Desai et al.

IEEE TRANSACTIONS ON NUCLEAR SCIENCE (2020)

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Article Engineering, Electrical & Electronic

Cascaded HTGR Power-Level Control Only by Regulating Primary Helium Flow Rate

Zhe Dong et al.

IEEE TRANSACTIONS ON NUCLEAR SCIENCE (2020)

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Article Thermodynamics

Nonlinear model predictive control (NMPC) of the solvent-based post-combustion CO2 capture process

Toluleke E. Akinola et al.

ENERGY (2020)

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Article Thermodynamics

A multiple-model based internal model control method for power control of small pressurized water reactors

Pengfei Wang et al.

ENERGY (2020)

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Article Green & Sustainable Science & Technology

Automatic generation control for the flexible operation of multimodular high temperature gas-cooled reactor plants

Zhe Dong et al.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2019)

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Article Thermodynamics

Practical dynamic matrix control of MHTGR-based nuclear steam supply systems

Di Jiang et al.

ENERGY (2019)

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Article Thermodynamics

Adaptive state-observer for monitoring flexible nuclear reactors

Zhe Dong et al.

ENERGY (2019)

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Article Thermodynamics

Dynamical modeling and simulation of the six-modular high temperature gas-cooled reactor plant HTR-PM600

Zhe Dong et al.

ENERGY (2018)

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Article Thermodynamics

Multi-layer perception based model predictive control for the thermal power of nuclear superheated-steam supply systems

Zhe Dong et al.

ENERGY (2018)

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Article Thermodynamics

Model-free adaptive control law for nuclear superheated-steam supply systems

Zhe Dong et al.

ENERGY (2017)

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Article Automation & Control Systems

Nonlinear observer based control for travelling wave nuclear reactors based on the Lyapunov approach during load following operation

R. Hassanvand et al.

JOURNAL OF PROCESS CONTROL (2016)

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Review Engineering, Multidisciplinary

The Shandong Shidao Bay 200 MWe High-Temperature Gas-Cooled Reactor Pebble-Bed Module (HTR-PM) Demonstration Power Plant: An Engineering and Technological Innovation

Zuoyi Zhang et al.

ENGINEERING (2016)

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Article Nuclear Science & Technology

Higher order sliding mode controller design for a research nuclear reactor considering the effect of xenon concentration during load following operation

G. R. Ansarifar et al.

ANNALS OF NUCLEAR ENERGY (2015)

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Article Engineering, Electrical & Electronic

Robust Disturbance Observer-Based Feedback Linearization Control for a Research Reactor Considering a Power Change Rate Constraint

Myunghwan Eom et al.

IEEE TRANSACTIONS ON NUCLEAR SCIENCE (2015)

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Article Engineering, Electrical & Electronic

Model-Free Power-Level Control of MHTGRs Against Input Saturation and Dead-Zone

Zhe Dong

IEEE TRANSACTIONS ON NUCLEAR SCIENCE (2015)

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Article Nuclear Science & Technology

Sufficient conditions for globally asymptotic self-stability of pressurized water reactors

Zhe Dong

ANNALS OF NUCLEAR ENERGY (2014)

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Article Engineering, Electrical & Electronic

PD Power-Level Control Design for PWRs: A Physically-Based Approach

Zhe Dong

IEEE TRANSACTIONS ON NUCLEAR SCIENCE (2013)

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Article Engineering, Electrical & Electronic

Sliding Mode Control for Spatial Stabilization of Advanced Heavy Water Reactor

R. K. Munje et al.

IEEE TRANSACTIONS ON NUCLEAR SCIENCE (2013)

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Article Nuclear Science & Technology

Self-stability analysis of MHTGRs: A shifted-ectropy based approach

Zhe Dong

NUCLEAR ENGINEERING AND DESIGN (2012)

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Article Nuclear Science & Technology

Robust nonlinear model predictive control for a PWR nuclear power plant

H. Eliasi et al.

PROGRESS IN NUCLEAR ENERGY (2012)

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Article Nuclear Science & Technology

Model validation and higher order sliding mode controller design for a research reactor

S. H. Qaiser et al.

ANNALS OF NUCLEAR ENERGY (2009)

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Review Nuclear Science & Technology

Deliberately small reactors and the second nuclear era

D. T. Ingersoll

PROGRESS IN NUCLEAR ENERGY (2009)

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Article Engineering, Electrical & Electronic

Design of a fuzzy model predictive power controller for pressurized water reactors

Man Gyun Na et al.

IEEE TRANSACTIONS ON NUCLEAR SCIENCE (2006)

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Article Engineering, Electrical & Electronic

Fuzzy-adapted recursive, sliding-mode controller design for a nuclear power plant control

ZY Huang et al.

IEEE TRANSACTIONS ON NUCLEAR SCIENCE (2004)

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Article Nuclear Science & Technology

Overview of HTTR design features

S Shiozawa et al.

NUCLEAR ENGINEERING AND DESIGN (2004)

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Article Nuclear Science & Technology

The design features of the HTR-10

ZX Wu et al.

NUCLEAR ENGINEERING AND DESIGN (2002)

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Power-pressure coordinated control of modular high temperature gas-cooled reactors

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