Original scientific paper
https://doi.org/10.1080/00051144.2018.1498204
Surge explicit nonlinear model predictive control using extended Greitzer model for a CCV supported compressor
Hashem Imani
; Young Researchers and Elite Club, Islamic Azad University, Ardabil, Iran
Hamid Malekizade
; Department of Electrical Engineering, Imam Khomeini University of Maritime Sciences, Noshahr, Mazandaran, Iran
Hamid Asadi Bagal
; Young Researchers and Elite Club, Islamic Azad University, Ardabil, Iran
Hasan Hosseinzadeh
; Department of Mathematics, Islamic Azad University, Ardabil, Iran
Abstract
This paper indicates the use of explicit nonlinear model predictive control method to prevent and control of compressor surge using extended Greitzer model. To encompass the effects of fast transients, nonlinear extended Greitzer model is considered for modelling and control of the compressor system. This model covers the effects of different parts, especially the compressor system pipeline, as the most important factor in the occurrence and acceleration of the surge.
Also, the mathematical description of the flow dynamic of compression system is derived in the presence of close-coupled valve (CCV) as the most commonly used actuator. For controlling the compressor system surge instability, explicit nonlinear model predictive control (NMPC)
is applied, whose allows efficient online implementation, significantly enlarges the operating region of the compressor and enhances the authority of the control system. Numerical simulations show that the proposed control system is able to meet the desired specifications in avoiding and active control of surge, in the presence of different types of disturbances occurring along the pipeline.
Keywords
Centrifugal compressor; closed coupled valve; extended Greitzer model; nonlinear model predictive control; surge control
Hrčak ID:
225177
URI
Publication date:
6.8.2018.
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