Multiple model P+I with anti-windup control of a nonlinear hydro turbine

Chalang Hama Rashed Mohammed, Sallehuddin Mohamed Haris, Zulkifli Mohd Nopiah

Research output: Contribution to journalArticle

Abstract

Hydro turbines are known to be highly nonlinear plants with uncertainties especially in the presence of large or abrupt disturbances. The presence of some nonlinear components within the system also increases its complexity. In this work, the use of the multiple model adaptive control (MMAC) method for such systems is studied, with the aim of improving desirable characteristics such as robustness and stability. Four candidate models were determined based on percentages of the hydro turbine full load. For each candidate model, a Proportional+Integral with anti-wind up feedback (P+I<inf>aw</inf>) controller structure was designed within the MMAC framework. The weighted sum of the control signals coming from the candidate controllers, obtained through the interpolation of the candidate models, provides the control input into the plant. Simulation tests were run using a nonlinear Pelton turbine model as the controlled hydro turbine plant, subjected to abruptly and smoothly varying load conditions. The results indicate that the control scheme is capable of producing excellent response with negligible uctuations.

Original languageEnglish
Pages (from-to)1841-1846
Number of pages6
JournalICIC Express Letters
Volume9
Issue number7
Publication statusPublished - 1 Jun 2015

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ASJC Scopus subject areas

  • Computer Science(all)
  • Control and Systems Engineering

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Multiple model P+I with anti-windup control of a nonlinear hydro turbine. / Mohammed, Chalang Hama Rashed; Mohamed Haris, Sallehuddin; Mohd Nopiah, Zulkifli.

In: ICIC Express Letters, Vol. 9, No. 7, 01.06.2015, p. 1841-1846.

Research output: Contribution to journalArticle

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