State Feedback Assisted Classical Control: An Incremental Approach to Control Modernization of Existing and Future Nuclear Reactors and Power Plants

Edwards, R.M.; Lee, Kwang Y.; Schultz, M. A.

doi:10.13182/nt90-a34468

Cited by 124 publications

(38 citation statements)

References 1 publication

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“…(1 ) One group delayed neutron model is utilized and the coolant inlet temperature is treated as a constant [2][3][4].The small perturbation linearization methodology is utilized to linearize the nonlinear core model (1). The transfer function and the state equation of the core are separately calculated and expressed by…”

Section: Modeling For Pwr Corementioning

confidence: 99%

“…Several researchers have made great efforts for the improvement of reactor core power control systems.The state-feedback basedcontrol with classical control part was proposed by Edwards et al [1][2] to devise power control systems of pressurized water reactor (PWR) cores. The linear quadratic Gaussian with loop transfer recovery (LQG/LTR) control wasadopted to contrivePWR core controllers for power regulations [3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The linear quadratic Gaussian with loop transfer recovery (LQG/LTR) control wasadopted to contrivePWR core controllers for power regulations [3][4]. However, the controllers in references [1][2][3][4] are designed based on a linear core model without xenon oscillations, and not always optimal or even ineffective for nonlinear cores.…”

Section: Introductionmentioning

confidence: 99%

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Power-level regulation and simulation of nonlinear pressurized water reactor core with xenon oscillation using H-infinity loop shaping control

Liang

Wang

et al. 2016

MATEC Web Conf.

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Abstract. This investigation is to solve the power-level control issue of a nonlinear pressurized water reactor core with xenon oscillations. A nonlinear pressurized water reactor core is modeled using the lumped parameter method, and a linear model of the core is then obtained through the small perturbation linearization way. The H∞loop shapingcontrolis utilized to design a robust controller of the linearized core model.The calculated H∞loop shaping controller is applied to the nonlinear core model. The nonlinear core model and the H∞ loop shaping controller build the nonlinear core power-level H∞loop shaping control system.Finally, the nonlinear core power-level H∞loop shaping control system is simulatedconsidering two typical load processes that are a step load maneuver and a ramp load maneuver, and simulation results show that the nonlinear control system is effective.

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Section: Modeling For Pwr Corementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Power-level regulation and simulation of nonlinear pressurized water reactor core with xenon oscillation using H-infinity loop shaping control

Liang

Wang

et al. 2016

MATEC Web Conf.

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“…Edwards et al [2,3] proposed the state-feedback assisted classical control (SFAC) for regulating the power of reactor cores which retains a classical output-feedback control part and uses state-feedback to modify reference load signals so that desired reference inputs can be obtained. Simulations showed that SFAC is competent to perform power regulations.…”

Section: Feedback Control With State Observermentioning

confidence: 99%

“…Improving power regulation technology of cores by the introduction of control algorithms is an important measure for safety and availability of NPPs. Over the decades, many control algorithms have been exploited and applied by researchers to core power regulations, which are the stateor output-feedback control with a state observer [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], the optimal control [18,19], the neural network or fuzzy intelligent control [20][21][22][23][24][25], the model predictive control [26][27][28], the H ∞ robust control [29][30][31], the sliding model control [32][33][34][35], the fractional order control [36][37][38][39][40][41] and other control algorithms [42][43][44][45][46][47]…”

Section: Introductionmentioning

confidence: 99%

Review on Application of Control Algorithms to Power Regulations of Reactor Cores

Wang

Liang

et al. 2016

ITM Web Conf.

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Abstract. This research is to solve the stability analysis issue of nonlinear pressurized water reactor cores. On the basis of modeling a nonlinear pressurized water reactor core using the lumped parameter method, its linearized model is achieved via the small perturbation linearization way. Linearized models of the nonlinear core at six power levels are selected as local models of this core. The T-S fuzzy idea for the core is exploited to construct the T-S fuzzy model of the nonlinear core based on the local models and the triangle membership function, which approximates the nonlinear core model within the entire range of power level. This fuzzy model as a bridge is to cater to the stability analysis of the nonlinear core after defining its stability. One stability theorem is deduced to define the nonlinear core is globally asymptotically stable in the global range of power level. Finally, the simulation work and stability analyses are separately completed. Numerical simulations show that the fuzzy model can substitute the nonlinear core model; stability analyses verify the nonlinear core is globally asymptotically stable in the global range of power level.

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H∞ Control for NRPCS Based on the Takagi-Sugeno Fuzzy Model

Gong

2015

Proceedings of the Second International Conference on Mechatronics and Automatic Control

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In this chapter, we use the Takagi-Sugeno (T-S) fuzzy model to model the nuclear reactor power control system (NRPCS), which is nonlinear time-varying and not easy to control. First, we give the point-kinetic nonlinear time-varying model of the NRPCS; then we choose the reactor power as the premise variable, propose the membership, and present a T-S fuzzy model for the NRPCS. Finally, an H∞ controller is investigated. The numerical example illustrates the advantage of the proposed model.

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State Feedback Assisted Classical Control: An Incremental Approach to Control Modernization of Existing and Future Nuclear Reactors and Power Plants

Cited by 124 publications

References 1 publication

Power-level regulation and simulation of nonlinear pressurized water reactor core with xenon oscillation using H-infinity loop shaping control

Power-level regulation and simulation of nonlinear pressurized water reactor core with xenon oscillation using H-infinity loop shaping control

Review on Application of Control Algorithms to Power Regulations of Reactor Cores

H∞ Control for NRPCS Based on the Takagi-Sugeno Fuzzy Model

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