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

Ansarifar, G.R.; Rafiei, M.

doi:10.1016/j.anucene.2014.09.021

Cited by 24 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A variety of control methods have been proposed for flexible operation, e.g. sliding mode control [243], LQG [244], and nonlinear state feedback [245]. With the current state of technology, load-following operation of nuclear power plants is achievable albeit at an economic cost due to operation at partial capacity [246,247].…”

Section: Nuclear Power Plantsmentioning

confidence: 99%

Sustainability and process control: A survey and perspective

Daoutidis

Zachar

Jogwar

2016

Journal of Process Control

View full text Add to dashboard Cite

Section: Nuclear Power Plantsmentioning

confidence: 99%

Sustainability and process control: A survey and perspective

Daoutidis

Zachar

Jogwar

2016

Journal of Process Control

View full text Add to dashboard Cite

“…To design the autonomous control system of the space reactor TOPAZ II, the sliding mode control (SMC) method is adopted for the automatic control functions including reactor startup and shutdown as well as power-level maintaining, ramping, and load-following [1]. In addition, some high-order SMC designs are presented for pressurized water reactors (PWRs) to mitigate the chattering effect during power maneuvering [2,3]. Feedback linearization (FL) is also an effective nonlinear control method, which is interconnected with a robust disturbance observer for the disturbance attenuation reactor power control in [4].…”

Section: Introductionmentioning

confidence: 99%

Passivity-Based Power-Level Control of Nuclear Reactors

et al. 2022

View full text Add to dashboard Cite

Nonlinear power-level control of nuclear reactors can guarantee wide-range closed-loop stability that is positive for plant load-following capability. Nuclear reactor power dynamics are the tight interconnection of both neutron kinetics and thermal hydraulics, which determines that the corresponding control design model is a complex nonlinear system with large uncertainty. Although nuclear reactor dynamics are complex, it is meaningful to develop simple but effective power-level control methods for easy practical implementation and commissioning. In this paper, a passivity-based control (PBC) is proposed for nuclear reactor power-level dynamics, which has a simple form and relies on the measurement of both neutron flux and average primary coolant temperature. By constructing the Lyapunov function based on the shifted ectropies of neutron kinetics and reactor core thermal hydraulics, the sufficient condition for globally asymptotic closed-loop stability is further given. Finally, this PBC is applied to the power-level control of a nuclear heating reactor, and simulation results show the feasibility and satisfactory performance.

show abstract

“…Some promising nonlinear control (NC) methods have been developed, e.g., the sliding mode control introduced by Shtessel, Huang, Qaiser and Ansarifar [4][5][6][7], the physics-based techniques given by Dong [8,9], and the feedback linearization method with disturbance observer proposed by Eom [10]. The previous works [4][5][6][7][8][9][10] show satisfactory results in enhancing closed-loop stability and robustness for NPPs. However, since most reported works are only focused on stability issues of NPPs operation, the operational efficiency needs to be further optimized.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Matrix Control for the Thermal Power of MHTGR-Based Nuclear Steam Supply System

et al. 2018

View full text Add to dashboard Cite

The modular high temperature gas-cooled reactor (MHTGR) based nuclear steam supplying system (NSSS) is constituted by an MHTGR, a once-through steam generator (OTSG) and can generate superheated steam for industrial heat or electric power generation. The wide range closed-loop stability is achieved by the recently proposed coordinated control law, in which the neutron flux and the temperatures of both main steam and primary coolant are chosen as controlled variables, and the flowrates of both primary and secondary loop and the control rod speed are chosen as manipulated variables. However, the thermal power is only controlled in open loop manner and hence could be further optimized through feedback. Motivated by this, a dynamic matrix control (DMC) is proposed for optimizing the thermal power of MHTGR based NSSS. A simple step-response model with the thermal power response data is utilized in designing the DMC. The design objective of DMC is to optimize the deviation of the thermal power from its reference under its rate constraint. Then, by the virtue of strong stability of existing control law and optimization ability of DMC, a cascade control structure is implemented for the thermal power optimization, with the coordinated control law in the inner loop and DMC in the outer loop. Numerical simulation results show the satisfactory improvement of thermal power response. This cascade control structure inherits the advantages of both proportional-integral-differential (PID) control and DMC, by which the zeros offset and the short settling time of thermal power are realized.

show abstract

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

Cited by 24 publications

References 8 publications

Sustainability and process control: A survey and perspective

Sustainability and process control: A survey and perspective

Passivity-Based Power-Level Control of Nuclear Reactors

Dynamic Matrix Control for the Thermal Power of MHTGR-Based Nuclear Steam Supply System

Contact Info

Product

Resources

About