Multivariable adaptive control for a thermal generator

Yokokawa, S.; Ueki, Yoshiteru; Tanaka, Hiroyuki; Doi, H.; Ueda, Koichiro; Taniguchi, Noriyuki

doi:10.1109/60.8054

Cited by 15 publications

(2 citation statements)

References 6 publications

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“…The increase in V sd is consistent with the calculations of [11]. Time, s Drum steam volume, m 3 Drum water volume, m 3…”

Section: A Habib Et Alsupporting

confidence: 81%

“…Simulation results indicate that the performance of the sliding mode controller is better than the existing multi-loop PID controller, with respect to minimizing deviations from set points and greater stability robustness in the event of faults. A digital control system employing optimal control has been developed [3] for a thermal power generator. The system is designed to coordinate the control of the excitation system and the governor system of a thermal generator to improve the stability and to suit practical application.…”

Section: Introductionmentioning

confidence: 99%

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A thermal nonlinear dynamic model for water tube drum boilers

Habib

Emara-Shabaik

Al-Zaharnah

et al. 2009

Int. J. Energy Res.

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SUMMARYA thermal model for the prediction of possible tube overheating was developed. The model incorporates a nonlinear state space dynamic model that captures the important physical interactions of the main variables of steam generation in naturally circulated water tube drum boilers. This paper provides an investigation of the dynamic effects of rapid rise in fuel flow rate (heat input) on the thermal and flow characteristics of the riser tubes in natural circulation water tube boilers. The system under consideration includes the drum, riser and downcomer as its major components. The dynamic response of the system's state variables due to rapid rises in fuel flow rates was investigated.The results show that the sudden rise in the firing rate is followed by an increase in the steam quality, which is accompanied by a decrease in the circulation rate as a result of increase in the pressure. The riser temperature increases slightly above the saturation temperature due to the increase in the steam temperature and due to the dynamic influence resulting from sudden increase in the heat flux. The present calculations of the water level in the drum provide good comparison with those in the literature.

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“…The increase in V sd is consistent with the calculations of [11]. Time, s Drum steam volume, m 3 Drum water volume, m 3…”

Section: A Habib Et Alsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%