A Corrected Equilibrium Manifold Expansion Model for Gas Turbine System Simulation and Control
Linhai Zhu,
Jinfu Liu,
Yujia Ma,
Weixing Zhou and
Daren Yu
Additional contact information
Linhai Zhu: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Jinfu Liu: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Yujia Ma: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Weixing Zhou: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Daren Yu: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Energies, 2020, vol. 13, issue 18, 1-18
Abstract:
During recent decades, the equilibrium manifold expansion (EME) model has been considered as a powerful identification tool for complex industrial systems with the aim of system control and simulation. Based on a two-step “dynamic and static” identification method, an approximate nonlinear state-space model is built by using multiple polynomials. However, the existing identification method is only suitable for single-input (SI) systems, but not for multi-input (MI) systems, where EME models cannot guarantee global calculation stability. For solving such a problem, this paper proposes a corrected equilibrium manifold expansion (CEME) model based on gas turbine prior knowledge. The equilibrium manifold is extended in dimension by introducing similarity equations instead of the high dimensional polynomial fitting. The dynamic similarity criterion of similarity theory guarantees the global stability of the CEME model. Finally, the comparative test between the CEME model and the existing MI-EME model is carried out through case studies involving data that are generated by a general turbofan engine simulation. Simulations show superior precision and calculation stability of the proposed model in capturing nonlinear behaviors of the gas turbine engine.
Keywords: gas turbine; system identification; corrected equilibrium manifold expansion model; multiple input multiple output; similarity theory (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: Add references at CitEc
Citations: View citations in EconPapers (2)
Downloads: (external link)
https://www.mdpi.com/1996-1073/13/18/4904/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/18/4904/ (text/html)
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:18:p:4904-:d:415831
Access Statistics for this article
Energies is currently edited by Ms. Agatha Cao
More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager (indexing@mdpi.com).