• norsk
    • English
  • English 
    • norsk
    • English
  • Login
View Item 
  •   Home
  • Fakultet for informasjonsteknologi og elektroteknikk (IE)
  • Institutt for teknisk kybernetikk
  • View Item
  •   Home
  • Fakultet for informasjonsteknologi og elektroteknikk (IE)
  • Institutt for teknisk kybernetikk
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

The Compressor Recycle System

Barstad, Bjørn Ove
Master thesis
Thumbnail
View/Open
358449_FULLTEXT01.pdf (2.947Mb)
358449_COVER01.pdf (137.0Kb)
358449_ATTACHMENT01.zip (129.9Kb)
URI
http://hdl.handle.net/11250/260234
Date
2010
Metadata
Show full item record
Collections
  • Institutt for teknisk kybernetikk [2240]
Abstract
The compressor recycle system is the main focus of this thesis. When the mass flow through a compressor becomes too low, the compressor can plunge into surge. Surge is a term that is used for axisymmetric oscillation through a compressor and is highly unwanted. The recycle system feeds compressed gas back to the intake when the mass flow becomes too low, and thereby act as a safety system.A mathematical model of the recycle system is extended and simulated in SIMULINK. The mathematical model contains the compressor characteristic, which is a function that defines the axisymmetric behavior through a compressor at different flows. The compressor characteristic is often modeled as a third order equation, but here it is modeled as a bivariate cubic spline approximation of measurement points. It is shown how a typical industry-setup of the recycle system works to avoid surge.The recycle system is proven to be stable independent of recycle flow, as long as the slope of the compressor characteristic is negative. Three control laws have been derived by the use of block backstepping. The simplest one of them guarantees semiglobal exponential stability.
Publisher
Institutt for teknisk kybernetikk

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit
 

 

Browse

ArchiveCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsDocument TypesJournalsThis CollectionBy Issue DateAuthorsTitlesSubjectsDocument TypesJournals

My Account

Login

Statistics

View Usage Statistics

Contact Us | Send Feedback

Privacy policy
DSpace software copyright © 2002-2019  DuraSpace

Service from  Unit