Dynamic Model of a Circulating Fluidized Bed Boiler

Majanne, Yrjö; Köykkä, Petri

doi:10.3182/20090705-4-sf-2005.00046

Cited by 11 publications

(10 citation statements)

References 7 publications

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“…In the contemporary performed work, the circulating fluidized bed (CFB) boiler model is developed (Majanne and Köykkä, 2009). The simulator is also built with MATLAB SIMULINK software.…”

Section: Simulation and Operational Resultsmentioning

confidence: 99%

Power Plant and Boiler Models for Operator Training Simulators

Neuman¹

2011

IFAC Proceedings Volumes

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“…In the contemporary performed work, the circulating fluidized bed (CFB) boiler model is developed (Majanne and Köykkä, 2009). The simulator is also built with MATLAB SIMULINK software.…”

Section: Simulation and Operational Resultsmentioning

confidence: 99%

Power Plant and Boiler Models for Operator Training Simulators

Neuman¹

2011

IFAC Proceedings Volumes

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“…The performance of the ADRC controller is greatly affected by parameters b 0 in (10), k p in (11), and β 1 , β 2 in (9). Therefore, there are overall twelve parameters for the decentralized controllers to be optimized.…”

Section: Tuning Of Adrc Controllersmentioning

confidence: 99%

“…As analyzed in Section 3.2, the introduced burning carbon can compensate the dynamics of the fuel-main steam pressure loop. The distributed ADRC controllers has been devised according to Equations (9) to (11). The parameters of the ADRC controllers are tuned by GA, the procedures of which are depicted in Section 4.…”

Section: Simulationsmentioning

confidence: 99%

“…Prior knowledge about subcritical CFB boilers is essential to the modeling research. Majanne and Köykkä presented a dynamic model which consisted of the air-flue gas and the water-steam systems [11]. The model was based on the first principles mass, energy, and momentum balances and experimental correlations about reaction kinetics and heat transfer, and was finally tested against measured process data.…”

Section: Introductionmentioning

confidence: 99%

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On the Flexible Operation of Supercritical Circulating Fluidized Bed: Burning Carbon Based Decentralized Active Disturbance Rejection Control

Zhang

Xue

et al. 2019

Energies

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Supercritical circulating fluidized bed (CFB) is one of the prominent clean coal technologies owing to the advantages of high efficiency, fuel flexibility, and low cost of emission control. The fast and flexible load-tracking performance of the supercritical CFB boiler-turbine unit presents a promising prospect in facilitating the sustainability of the power systems. However, features such as large inertia, strong nonlinearity, and multivariable coupling make it a challenging task to harmonize the boiler’s slow dynamics with the turbine’s fast dynamics. To improve the operational flexibility of the supercritical CFB unit, a burning carbon based decentralized active disturbance rejection control is proposed. Since burning carbon in the furnace responds faster than throttle steam pressure when the fuel flow rate changes, it is utilized to compensate the dynamics of the corresponding loop. The parameters of the controllers are tuned by optimizing the weighted integrated absolute error index of each loop via genetic algorithm. Simulations of the proposed method on a 600 MW supercritical CFB unit verify the merits of load following and disturbance rejection in terms of less settling time and overshoot.

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“…The presented model is based on the earlier CFB drum boiler model by Majanne and Köykkä (2009). Natural circulation drum boilers typically consist of feed water and combustion air preheaters, evaporator, drum, super-and reheaters.…”

Section: Introductionmentioning

confidence: 99%