Download Adaptive Control of Solar Energy Collector Systems by João M. Lemos, Rui Neves-Silva, José M. Igreja (auth.) PDF

By João M. Lemos, Rui Neves-Silva, José M. Igreja (auth.)

This ebook describes equipment for adaptive keep an eye on of distributed-collector sun fields: vegetation that acquire solar power and convey it in thermal shape. Controller layout tools are offered that may conquer problems present in those kind of plants:

  • they are distributed-parameter structures, i.e., platforms with dynamics that rely on area in addition to time;
  • their dynamics is nonlinear, with a bilinear structure;
  • there is an important point of uncertainty in plant knowledge.

Adaptive tools shape the focal point of the textual content end result of the measure of uncertainty within the wisdom of plant dynamics. components of the textual content are dedicated to layout tools that imagine just a very constrained wisdom in regards to the plant. different components element equipment that depend upon wisdom of the dominant plant constitution. those equipment are extra plant particular, yet enable the development of performance.

Adaptive keep an eye on of solar power Collector Systems demonstrates the dynamics of sunlight fields to be wealthy sufficient to offer a problem to the keep watch over fashion designer whereas, while, basic sufficient to permit analytic paintings to be performed, supplying case experiences on dynamics and nonlinear keep an eye on layout in an easy and revealing, yet nontrivial way.

The keep an eye on ways taken care of during this monograph should be generalized to use to different crops modelled by way of hyperbolic partial differential equations, particularly procedure vegetation within which delivery phenomena happen, vegetation like dryers, steam super-heaters or even road traffic.

An vital instance, used many times during the textual content, is a distributed-collector sunlight box put in at Plataforma sunlight de Almeria, situated in southern Spain. The keep an eye on algorithms specified by the textual content are illustrated with experimental effects generated from this plant.

Although the first concentration of this monograph is solar power collector, the diversity of alternative platforms that may enjoy the equipment defined will make it of curiosity to manage engineers operating in lots of industries in addition to to educational keep an eye on researchers drawn to adaptive regulate and its applications.

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One is associated with moisture scattered in the atmosphere. By absorbing radiation in a random way, it causes fast small amplitude changes of the intensity of the radiation arriving to the collector field. The fluctuations on the record on the left of Fig. 14 are predominantly due to moisture. The other factor that reduces radiation intensity are passing clouds. The record on the right of Fig. 14 shows three groups of clouds passing that drastically reduce the arriving solar radiation intensity, sometime to values close to just 100 Wm−2 .

The other is the enthalpy increase due to solar energy, given by ¯ E 3 = αR(t)αzαt, where R is the solar radiation power and α¯ is a parameter related to the efficiency of energy absorption by the fluid, which depends on mirror optical efficiency and also on fluid thermal characteristics. Hence, E1 = E2 + E3 or ¯ ρ f c f A f αz [T (z, t + αt) − T (z, t)] = ρ f c f u(t)αt [T (z, t) − T (z + αz, t)] + αR(t)αzαt. 3) u= define ∗ α= and let αt → 0 and αz → 0 to obtain the model expressed by the following partial differential equation ∂ ∂ T (z, t) = −u T (z, t) + αR(t).

Springer Farkas I, Vajk I (2002) Internal model-based controller for a solar plant. In: Proceedings of 15th IFAC World Congress Flores A, Saez D, Araya J, Berenguel M, Cipriano A (2005) Fuzzy predictive control of a solar power plant. IEEE Trans Fuzzy Syst 13(1):58–68 Green MA (2006) Third generation photovoltaics. Springer Igreja JM, Lemos JM, Barão M, Silva RN (2005) Adaptive receding horizon control of a distributed collector solar field. In: Proceedings of IEEE CDC-ECC 2005, Sevilla, Spain Ioannou P, Fidan B (2006) Adaptive control tutorial.

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