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Monitorng of the photovoltaic power plant
Střípek, Martin ; Kunovjánek, Miroslav (referee) ; Dolenský, Jan (advisor)
This Bachelor work is dealing with theoretical knowledge of Photovoltaic. One of the great advantage of Photovoltaic is inexhaustible resource in long-time period – The Sun. This approach is especially important in todays world when more and more countries are becoming energetically dependent and may run out of fossil fuels. Bachelor work shall introdukce the principle of Photovoltaic, it's practical use for photovoltaic power stations, further it’s classification and types of constructions. The practical part is focused on monitoring the operation of photovoltaic power. Evaluate the instantaneous AC power, the total energy supplied to the network and compared with theoretical values. Bachelor thesis should help in detecting errors that can lead to energy losses.
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Grit-off photovoltaic system
Horváth, Martin ; Dolenský, Jan (referee) ; Vaněk, Jiří (advisor)
The restoring sources of energy and their development brings the question how these sources can be utilized in the best way. Master`s thesis deals with photovoltaic systems. It describes their history line, actual situation and also brings some expectations in the future. There are mentioned some materials and technologies which are used for its manufacture, conditions of using in practice, advantages and disadvantages and finally a real mobile application of photovoltaic which serves for a production of electricity that is saved in the battery.
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Control system used in autonomous solar system
Slezák, Pavel ; Dolenský, Jan (referee) ; Vaněk, Jiří (advisor)
This thesis dealing with description and of autonomous solar systems and algorithms for control of decision-making mechanism. Optimal set of these machanism has effeect in raise of efficiency in hole autonomous system. In practical purposes propose create one by using microprocesor ATMEGA8, which measure all electrical data in system and control all decisions of implemented algorithm.
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Optimalization of solar park operation
Kašpařík, Petr ; Vaněk, Jiří (referee) ; Dolenský, Jan (advisor)
This work deals with the comparison of photovoltaic technologies and optimization of Photovoltaic power plants using empirical models. The primary purpose of this work is to analyse current status of selected photovoltaic power plants in the Czech republic and to suggest possible means to increase their productivity. This analysis uses data measured by systems for direct management of these parks, and these data are compared with theoretical data calculated from measurement system Czech weather stations and PVGIS.
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Equipment for measuring of solar radiation intensity
Bobalík, Lukáš ; Dolenský, Jan (referee) ; Stojan, Radek (advisor)
This project offers a proposal and a solution of an equipment for measuring of solar radiation intensity. It lists reasons why to measure intensity, contains fundamentals of photovoltaics, deals with how electric energy is obtained from a solar radiation and how the intensity of solar radiation affects the power output of photovoltaic devices. The project also deals with prime facts about 4 – 20 mA current loop and serial RS-232 communication. Proposed design is based on usage of the pyranometer CMP 21, a PIC microcontroller and a current loop to create a device which gathers data and transfers them to a PC for further processing.
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Characterization backsides of solar cells
Winkler, Luděk ; Vaněk, Jiří (referee) ; Dolenský, Jan (advisor)
This thesis deals with the characterization back side of solar cells. In order to describe the quality of material from the point of view of a back side solar cell, the method of photoluminescence, the method of light emitting from micro plasma and LBIC (Light Beam Induced Current) is used. Gained results are compared with the results of front side analysis. Next, the thesis describes back side potential.
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Characteristic of photovoltaic system
Pokorný, Marek ; Dolenský, Jan (referee) ; Vaněk, Jiří (advisor)
The aim of this work is informed first about photovoltaics universally, works to inform the photovoltaic panels and complete plants. The work also includes instructions on how to implement PVP in accordance with law. Another part is the rough draft of the photovoltaic power 30 kWp, which can be placed on the house, computation and calculation of investment and them profitable investments to time. Design is made in two separate forms of the Fronius Solar and Sunny Design, their outputs are compared. The practical part of this work cooperates with the company SOLARTEC Ltd. for experimental measurements of the photovoltaic system and develop a methodology for setting the properties of real solar systems in operation from the measured data then stored in a database. These data further evaluate and compare the similar operating conditions. This data will show as the course of production of electricity during the typical day in percentage terms, depending on the incident irradiance, cell temperature, angle of incident radiation, etc. We can compare what it looks like an ideal day in terms of production of photovoltaic power, with the other days. Further are in work mentioned histograms achievement panel behind classical day and behind all - time investigation.
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Distribution system of Cyprus - feasibility of renewable energy sources and transfer of energy
Šimonová, Lucie ; Stojan, Radek (referee) ; Dolenský, Jan (advisor)
Until a few decades ago few people could imagine that the photovoltaic, solar thermal and other power based on renewable resources, will become a reality. Today people from all over the world on the contrary try at full blast derive benefit from of all possible available source. Using sunlight as a source of energy is first enforced only for small devices such as calculators for charging the battery, but now we are able to produced energy from the sun to supply people around the world. Of course it is not possible supply consumer sector plus firm only from performances renewable power supply. Therefore endeavour is derive benefit from classical energy production at the same time with others power supply. The basic components of photovoltaic and solar thermal power are panels. The panels are made of different materials in different shapes and sizes. During production, the resulting effect looks in addition to costs associated with production. For photovoltaic and solar thermal power plant requires sufficient sunlight. The sunshine has biggest intensity on south of ours planets. Therefore endeavour is build lump these power station just in stand with bigger intensity sunshine. One of them is just Cyprus, too.
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Usage Local Light Radiation for the Diagnostic Method of Photovoltaic Cells
Dolenský, Jan ; Šály, Vladimír (referee) ; Unčovský,, Marek (referee) ; Vaněk, Jiří (advisor)
This thesis is focused on the area of analysis and diagnostic of monocrystalline solar cells, using local light radiation. Main goals of this thesis are focused on explanation of generation and behavior microplasma in solar cell, in dependence of temperature and reversed bias voltage. As a next focus of this thesis is strong regions of microplasma sources, analyzed by scanning electron microscope and a detailed analysis of edge and surface structure is made. The influence of the environment (air pressure, level of vacuum and nitrogen gas) on the microplasma generation and behavior is observed in the vacuum chamber of electron microscope. The results from microplasma method are correlated with noise diagnostic method and on the base of these results are set a new thesis and mathematical equations for the defects behavior in different conditions. The outcomes of the research are shared with the manufacturer od silicon solar cells, Solartec s.r.o. company. It is the advanced diagnostic methods that allow improving the quality of the production process, through early detection of individual groups of defects.
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