Dynamic Model of Centrifugal Compressor for Prediction of Surge Evolution and Performance Variations

Abstract : When a control algorithm is developed to protect automotive compressor surges, the simulation model typically selects an empirically determined look-up table. However, it is difficult for a control oriented empirical model to show surge characteristics of the super charger. In this study, a dynamic supercharger model is developed to predict the performance of a centrifugal compressor under dynamic load follow-up. The model is developed using Simulink® environment, and is composed of a compressor, throttle body, valves, and chamber. Greitzer's compressor model is used, and the geometric parameters are achieved by the actual supercharger. The simulation model is validated with experimental data. It is shown that compressor surge is effectively predicted by this dynamic compressor model under various operating conditions. †Corresponding Author, sangseok@cnu.ac.krⒸ 2016 The Korean Society of Mechanical Engineers - 기호설명 -  : 면적  : 음속  : 압력  : 부피  : 로터 스피드  : 질량 유량  : 덕트 길이