Multivariable feedwater control design for a steam generator

Author

Younkins, Thomas D. ; Chow, Joe H.

Author_Institution

General Electric Co., Schenectady, NY, USA

Volume

8

Issue

2

fYear

1988

fDate

4/1/1988 12:00:00 AM

Firstpage

77

Lastpage

80

Abstract

A multivariable feedwater control design for drum water-level regulation in a heat-recovery steam generator is presented. The control design is based on a projective output feedback scheme and is used to coordinate the tandem-connected feedwater valves of a low-pressure and a high-pressure drum. One of the design objectives is to minimize the blowdown from the drums during start-ups. Results demonstrating the control performance and the improvement over a traditional single-loop feedwater control design are shown.<>

Keywords

boilers; control system synthesis; feedback; level control; multivariable control systems; blowdown minimization; boiler; drum water-level regulation; heat-recovery steam generator; high-pressure drum; low-pressure drum; multivariable control; multivariable feedwater control design; projective output feedback scheme; single-loop control; tandem-connected feedwater valves; Control design; Coordinate measuring machines; Hardware; Output feedback; Power generation; Power measurement; Temperature control; Turbines; Valves; Water heating;

fLanguage

English

Journal_Title

Control Systems Magazine, IEEE

Publisher

ieee

ISSN

0272-1708

Type

jour

DOI

10.1109/37.1878

Filename

1878