Linear model of a closed three-shaft Brayton cycle

Author

Van Niekerk, Carl R. ; Van Schoor, George ; Pritchard, John F.

Volume

2

fYear

2004

fDate

15-17 Sept. 2004

Firstpage

1079

Abstract

A linear model of a closed three-shaft Brayton cycle is developed. The model is intended to give an understanding of the dominant dynamic behavior in a nuclear power system that utilizes a closed three-shaft Brayton cycle. The insights gained from the model can be used for system design as well as for the design of control algorithms [S.T. Glad et al. (2001)] [B.Hendrisson et al., (2001)]. Linear models of the turbines and compressors are developed, followed by models of the shafts and the volumes inside the circuit. Thereafter, the system equations are derived from the component models and put into state space format. Finally, a time domain comparison is made between the linear system model and the responses predicted by the thermal-fluid analysis software program, Flownex.

Keywords

compressors; linear systems; nuclear power stations; power system analysis computing; shafts; thermal analysis; time-domain analysis; turbines; Flownex; closed three-shaft Brayton cycle; compressors; dominant dynamic behavior; linear system model; nuclear power system; state space format; thermal-fluid analysis software program; time domain comparison; turbines; Algorithm design and analysis; Circuits; Compressors; Equations; Power system dynamics; Power system modeling; Shafts; State-space methods; Time domain analysis; Turbines;

fLanguage

English

Publisher

ieee

Conference_Titel

AFRICON, 2004. 7th AFRICON Conference in Africa

Print_ISBN

0-7803-8605-1

Type

conf

DOI

10.1109/AFRICON.2004.1406855

Filename

1406855