Paper Info
Title
The impact of speed variation on the stability of variable speed axial compressors at efficient operating points
Abstract
In the case of variable speed axial compressors, it is a matter of great importance to investigate the impact of speed variations on surge and stall transients. In spite of the important research on this subject, the qualitative behavior of variable speed axial compressors and the development of an effective controller are still challenging problems. The present paper studies the impact of speed transitions on the stability of high efficiency operating points being near to the fully developed rotating stall zone. Effects of throttle gain and acceleration rate as the bifurcation parameters of the model are also addressed to demonstrate the richness of nonlinear dynamics. Another key parameter, which affects the qualitative behavior of the system, is gas viscosity. The impact of gas viscosity is investigated as well. Time-domain simulation and bifurcation analysis as two standard and complementary methods for describing the qualitative behavior of systems are employed here. Outcomes reveal that speed transitions causing temporary stall harmonics, can drive the system to undesirable fully developed stall zone. This phenomenon threatens the stability of high efficiency operating points during speed transitions. Therefore, a need arises to develop an effective control approach being capable of simultaneously suppressing stall and achieving rapid acceleration.
Year
DOI
Venue
2012
10.1109/ACC.2012.6314785
American Control Conference
Keywords
DocType
ISSN
acceleration control,angular velocity control,bifurcation,compressors,mechanical stability,nonlinear dynamical systems,acceleration rate,bifurcation parameter,compressor stability,control approach,gas viscosity,nonlinear dynamics,rotating stall zone,speed transition,speed variation,stall transient,surge transient,throttle gain,time-domain simulation,variable speed axial compressor
Conference
0743-1619 E-ISBN : 978-1-4673-2102-0
ISBN
Citations 
PageRank 
978-1-4673-2102-0
2
1.05
References 
Authors
2
3
Name
Order
Citations
PageRank
Gholamreza Sari121.05
Ouassima Akhrif2468.66
Lahcen Saydy36617.99