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Robust Control Design for Solar Tower Power Plant

Sajedi Hosseini, Danial | 2023

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 56396 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Rezaeizadeh, Amin
  7. Abstract:
  8. In this research, we have examined the efficiency of solar tower power plant. The solar tower power plant is one of the most important types of solar power plants that have been noticed due to the possibility of reaching high temperatures and good thermal efficiency. A concentrated solar tower power plant is one of the ways to convert solar radiation into electricity. In this process, the cold water at the top of the tower turns into hot water and then turns into steam, and from there it is given to the generator, which produces electricity. In this type of power plant, there are a large number of mirrors, which are called heliostats, and they are controlled separately and reflect the sunlight on the central receiver on top of the tower. Since it is possible that the heat distribution on the receiver is not uniform and may be disturbed due to some factors, we should think about optimizing the two-axis angles of the heliostat. In this research, the mechanical structure of the two-axis tracking system for the heliostat is proposed to track the sun daily from east to west and reflect the sun's rays to the receiver on the top of the tower, and according to that, the classical controller is proposed. Therefore, in the first phase, we investigated the uncertainty of the engine parameters and controller design. In this phase, we have considered a series of initial target points and calculated the angles of the heliostat, and finally, taking into account the uncertainty of the engine parameters, we designed the H_∞, H_2, integrated and resistant controller with μ synthesis. Am. In the second phase, taking into account the lack of correct adjustment on the heliostat angles due to erosion factors, it is observed that the worst distribution of flux density has occurred on the receiver and there is a risk of damaging the receiver. Therefore, an algorithm for optimizing the target points of the heliostats on the receiver has been proposed, and according to that, we obtain a uniform flux density distribution
  9. Keywords:
  10. Robust Control ; Solar Tower ; Solar Tracker ; Flux Density Distribution ; Solar Tower Power Plant

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