Finite-time Takagi–Sugeno fuzzy controller design for hydraulic turbine governing systems with mechanical time delays

Yuqiang Tian, Bin Wang, Peng Chen and Ying Yang

Renewable Energy, 2021, vol. 173, issue C, 614-624

Abstract: The grid has increasingly higher reliability requirements for hydropower supply and regulation, imposing higher requirements for the stability of hydraulic turbine governing system (HTGS). The mechanical structure of the unit is complex, and the adjustment of the active guide vane needs the hydraulic servo system with multistage amplifier to provide force, which makes the governor response output lag. The control of an HTGS that focuses on Lyapunov asymptotic stability may have poor transient performance. Therefore, a brand-new nonlinear finite-time Takagi–Sugeno fuzzy control scheme for HTGSs with mechanical time delay is proposed. First, based on the Takagi–Sugeno fuzzy model with time delay, a time-delay HTGS that considers the inherent delay effect of the HTGS relay component as well as its fuzzy model is presented. Second, based on the finite-time stability theorem, a nonlinear finite-time Takagi–Sugeno fuzzy controller for the HTGS is proposed and a practical stability condition is given in the form of matrix inequalities. Furthermore, the matrix inequalities are transformed into a set of linear matrix inequalities, which are easy to solve. Finally, numerical experiments on HTGS under various operating conditions demonstrate the proposed scheme’s effectiveness and superiority compared with the traditional proportional integral derivative control.

Keywords: Hydraulic turbine governing system; Takagi–sugeno fuzzy model; Mechanical time delays; Finite-time stability; Unit operation control; Transient process (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148121005231
Full text for ScienceDirect subscribers only

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:eee:renene:v:173:y:2021:i:c:p:614-624

DOI: 10.1016/j.renene.2021.04.011

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().