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Abstract
A novel controller for coal circulation and pulverized coal flow in a coal mill is
proposed. The design is based on optimal control theory for bilinear systems with additional integral action. The states are estimated from the grinding power consumption and the amount of coal accumulated in the mill by employing a special variant of a Luenberger observer. The controller uses the rotating classifier to improve the dynamical performance of the overall system. The proposed controller is compared with a PID-type controller with available pulverized coal flow measurements under nominal conditions as well as when parameter uncertainties and noise are present. The proposed controller lowers the grinding power consumption while in most cases exhibiting superior performance in comparison with the PID controller.
proposed. The design is based on optimal control theory for bilinear systems with additional integral action. The states are estimated from the grinding power consumption and the amount of coal accumulated in the mill by employing a special variant of a Luenberger observer. The controller uses the rotating classifier to improve the dynamical performance of the overall system. The proposed controller is compared with a PID-type controller with available pulverized coal flow measurements under nominal conditions as well as when parameter uncertainties and noise are present. The proposed controller lowers the grinding power consumption while in most cases exhibiting superior performance in comparison with the PID controller.
Original language | English |
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Book series | Proceedings of the 18th IFAC World Congress, 2011 |
Number of pages | 6 |
ISSN | 1474-6670 |
Publication status | Published - 28 Aug 2011 |
Event | 18th IFAC World Congress - Milano, Italy Duration: 28 Aug 2011 → 2 Sept 2011 |
Conference
Conference | 18th IFAC World Congress |
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Country/Territory | Italy |
City | Milano |
Period | 28/08/2011 → 02/09/2011 |
Keywords
- Power system modeling
- Power system control
Fingerprint
Dive into the research topics of 'Improved coal grinding and fuel flow control in thermal power plants'. Together they form a unique fingerprint.Projects
- 1 Finished
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Improving Power Plant Operation through Hybrid Control
Niemczyk, P., Bendtsen, J. D. & Ravn, A. P.
Center for Embedded Software Systems (CISS), Section for Automation and Control, DONG Energy A/S
01/12/2007 → 31/10/2010
Project: Research