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Harijono A. Tjokronegoro
Engineering Physics Research Group, Institut Teknologi Bandung
Engineering

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On Active Surge Control of Compression Systems via Characteristic Linearization and Model Nonlinearity Cancellation Yohannes S.M. Simamora; Harijono A. Tjokronegoro; Edi Leksono
Journal of Engineering and Technological Sciences Vol. 46 No. 3 (2014)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2014.46.3.8

Abstract

A simple approach of active surge control of compression systems is presented. Specifically, nonlinear components of the pressure ratio and rotating speed states of the Moore-Greitzer model are transferred into the input vectors. Subsequently, the compressor characteristic is linearized into two modes, which describe the stable region and the unstable region respectively. As a result, the system's state and input matrices both appear linear, to which linear realization and analysis are applicable. A linear quadratic regulator plus integrator is then chosen as closed-loop controller. By simulation it was shown that the modified model and characteristics can describe surge behavior, while the closed-loop controller can stabilize the system in the unstable operating region. The last-mentioned was achieved when massflow was 5.38 per cent less than the surge point.
Co-Authors Edi Leksono Yohannes S.M. Simamora