Speed and surge control for a low order centrifugal compressor model

J.T. Gravdahl, O. Egeland
Proceedings of the 1997 IEEE International Conference on Control Applications  
Previous work on stabilization of compressor surge is extended to include control of the angular velocity of the compressor. First a low order centrifugal compressor model is presented where the states are mass ow, pressure rise and rotational speed of the spool. Energy transfer considerations are used to develop a compressor characteristic. In order to stabilize equilibriums to the left of the surge line, a close coupled valve i s used in series with the compressor. Controllers for the valve
more » ... ers for the valve pressure drop and spool speed are derived. Semi-global exponential stability i s p r o ved using a Lyapunov a r g u m e n t.
doi:10.1109/cca.1997.627573 fatcat:o6w5wxqul5fhxmook5aeh4moia