Model-based Control of a Bottom Fired Marine Boiler
| Authors: | Solberg Brian, Aalborg Industries A/S, Denmark
Karstensen Claus M. S., Aalborg Industries A/S, Denmark
Andersen Palle, Aalborg University, Denmark
Pedersen Tom S., Aalborg University, Denmark
Hvistendahl Poul U., F. L. Smidth, Denmark |
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| Topic: | 6.3 Power Plants and Power Systems |
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| Session: | Power Plants and Power Systems Modelling and Control |
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| Keywords: | Boilers, Dynamic modelling, LQG control, Estimator, Tests |
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Abstract
This paper focuses on applying model based MIMO control to minimize variations in water level for a specific boiler type. A first principles model is put up. The model is linearized and an LQG controller is designed. Furthermore the benefit of using a steam flow measurement is compared to a strategy relying on estimates of the disturbance. Preliminary tests at the boiler system show that the designed controller is able to control the boiler process. Furthermore it can be concluded that relying on estimates of the steam flow in the control strategy does not decrease the controller performance remarkable.
