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A non-linear controller design for the evaporator of a heat recovery steam generator

Tahami, F ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1243/09576509JPE705
  3. Publisher: 2009
  4. Abstract:
  5. This article addresses a combined approach of sliding mode control (SMC) with generalized predictive control (GPC) to achieve fluid temperature control in the evaporator of a heat recovery steam generator. The evaporator is modelled as a first-order plus dead time process. The model is developed using the experimental data obtained at an actual power plant. An output error identification algorithm is used to minimize the error between the model and the experiments in different operating conditions. A GPC method is exploited to optimize the sliding surface and the coefficients of the switching functions used in SMC. The proposed control schemes are evaluated by thorough simulation for performance and robustness against parameter variations and disturbances. © 2009 IMechE
  6. Keywords:
  7. Combined cycle power plant ; Control schemes ; Dead time process ; Experimental data ; First-order ; First-order plus dead time process ; Fluid temperatures ; Generalized predictive control ; Heat recovery steam generator ; Heat recovery steam generators ; Non-linear controllers ; Operating condition ; Output error identification ; Parameter variation ; Sliding surface ; Algorithms ; Combined cycle power plants ; Controllers ; Descaling ; Evaporators ; Linear control systems ; Predictive control systems ; Sliding mode control ; Steam ; Steam generators ; Steam power plants ; Switching functions ; Three term control systems ; Waste heat ; Process control
  8. Source: Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy ; Volume 223, Issue 5 , 2009 , Pages 535-541 ; 09576509 (ISSN)
  9. URL: https://journals.sagepub.com/doi/abs/10.1243/09576509JPE705