Nonlinear Modeling of Compression System and Stability with Recirculation.
El-Zahaby, A., Abd-Elhameed, E., Zyada, Z., Sad Eldin, K., Salem, M. (2020). Nonlinear Modeling of Compression System and Stability with Recirculation.. EKB Journal Management System, 34(1), 66-72. doi: 10.21608/bfemu.2020.125411
Aly El-Zahaby; El-Shenawy Abd-Elhameed; Zakarya Zyada; Khaled Sad Eldin; Mohamed Salem. "Nonlinear Modeling of Compression System and Stability with Recirculation.". EKB Journal Management System, 34, 1, 2020, 66-72. doi: 10.21608/bfemu.2020.125411
El-Zahaby, A., Abd-Elhameed, E., Zyada, Z., Sad Eldin, K., Salem, M. (2020). 'Nonlinear Modeling of Compression System and Stability with Recirculation.', EKB Journal Management System, 34(1), pp. 66-72. doi: 10.21608/bfemu.2020.125411
El-Zahaby, A., Abd-Elhameed, E., Zyada, Z., Sad Eldin, K., Salem, M. Nonlinear Modeling of Compression System and Stability with Recirculation.. EKB Journal Management System, 2020; 34(1): 66-72. doi: 10.21608/bfemu.2020.125411

Nonlinear Modeling of Compression System and Stability with Recirculation.

MEJ- Mansoura Engineering Journal
Article 11, Volume 34, Issue 1, March 2009, Page 66-72  XML PDF (274.7 K)
Document Type: Research Studies
DOI: 10.21608/bfemu.2020.125411
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Authors
Aly El-Zahaby* 1; El-Shenawy Abd-Elhameed2; Zakarya Zyada2; Khaled Sad Eldin2; Mohamed Salem3
1Mechanical Power Engineering Department, Tanta University, Tanta, Egypt
2Mechanical Power Engineering Department, Tanta University, Egypt
3Mechanical Engineer., Gasco Company, Egypt
Abstract
The model of compression system is used for capturing the dynamics of rotating stall and surge. In this paper, we introduce the modeling formulations of compression system after modifying the original work proposed by Moore and Greitzer (1986). Recirculation technique is used to eliminate the instabilities of compression system, where bled air from downstream compressor via bleed valves is re-circulated to injectors upstream of compressor inlet. The form of the modeling takes the four-state low order model which applied to design the 110nlinear controller. The compressor works in stable regime by using recirculation technique. Lyapunov Control Function (LCF) is used to produce optimal control to stabilize the compressor operation by using recirculation technique, whereas simulation results show that it is a good technique. By using recirculation technique bleed valves requirements are reduced. 
Keywords
Compression system; Compression system modeling with re-circulation; Surge control
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