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.)

ISBN-10: 0857299158

ISBN-13: 9780857299154

ISBN-10: 3319068520

ISBN-13: 9783319068527

ISBN-10: 3319068539

ISBN-13: 9783319068534

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

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

Adaptive equipment shape the point of interest of the textual content due to the measure of uncertainty within the wisdom of plant dynamics. elements of the textual content are dedicated to layout equipment that imagine just a very restricted wisdom concerning the plant. different components aspect equipment that depend upon wisdom of the dominant plant constitution. those equipment are extra plant particular, yet let the development of performance.

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

The regulate methods taken care of during this monograph could be generalized to use to different crops modelled through hyperbolic partial differential equations, particularly method crops during which shipping phenomena happen, crops like dryers, steam super-heaters or even road traffic.

An very important instance, used many times through the textual content, is a distributed-collector sunlight box put in at Plataforma sunlight de Almeria, situated in southern Spain. The keep watch over 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 variety of different structures which could enjoy the tools defined will make it of curiosity to regulate 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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Additional resources for Adaptive Control of Solar Energy Collector Systems

Example text

The process output can be either the average of the temperature of the fluid at the output of the collector loops or its maximum. Since in practical terms there is little difference in controlling these two variables, the average fluid temperature is used. The main disturbances to the system are: • Changes in incoming solar radiation due to passing clouds and moisture scattered in the atmosphere; • Changes in the temperature of the fluid at the input of the pipe; • Changes in ambient temperature; • Disturbances due to various factors such as dust deposition on the mirrors and wind affecting the shape of the mirrors.

12 Temperature control of a 6 kW solar furnace a feedforward controller implies, off course, that a reliable model of the plant is available, including the effect of both the manipulated variable (shutter command) and accessible disturbance (incoming solar radiation) on the output to be controlled (sample temperature). 14 1 Solar Energy Collector Systems Another useful idea is the use of gain-scheduling (Berenguel et al. 1999). A significant part of the difficulty of designing controllers for solar furnaces comes from the fact that they are strongly nonlinear.

13 Basic temperature control system for a distributed collector field to improve the performance. The other two disturbances are less important. It should be remarked that the measure of incoming solar radiation may present difficulties due to the large size of the field that may lead to situations in which the collectors are not uniformly illuminated. 14 shows two examples of daily records of solar radiation. Due to the Sun’s apparent movement, the intensity of radiation arriving at a given point on Earth has a sinusoidal evolution with the hour of the day.

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


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