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Analytic method of solar panel and systems
Kopunec, Vít ; Veselý, Aleš (referee) ; Vaněk, Jiří (advisor)
The aim of the diploma work is to introduce analytical methods concerning solar panels and systems. Firstly, the attention is drawn to a principle of photovoltaic conversion including an explanation of photoelectric phenomenon as well as the issue of P-N junction considered to be the fundamental building block of a solar cell. With respect to the fact that the diploma work is to be focused on testing of solar panels and the identification of defects in solar cells, the work describes individual solar cells, solar panels as well as individual methods of defect identification. Secondly, the work includes sections dealing with the assessment of the measurement performed by using electroluminescence method as well as the measurement method of volt-ampere parameters. The last section of the work includes the assessment of solar panel aging after one-year performance using the electroluminescence measurement method.
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Measuring system of photovoltaic panels efficiency
Hofman, Jiří ; Háze, Jiří (referee) ; Vaněk, Jiří (advisor)
This diploma thesis is focused on development and initial run of a measurement system whose aim is to measure photovoltaic panel efficiency. Experimental photovoltaic panel is installed outside the laboratory. Measurement system consists of the solar radiation measurement module (pyranometer), photovoltaic panel load module (panel power measurement) and panel climate measurement module. Data from measurement module is being captured via control computer for subsequent analysis of panel efficiency and climatic impacts on it.
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Solar charge controllers for off-grid systems
KRČKA, Pavel
This diploma thesis deals with photovoltaic rechargable regulators used in isolated, or off-grid photovoltaic systems. First, basic types of off-grid installations, including their functions and applications in practice are described. Then, possibilities of electric energy accumulation in photovoltaic systems are mentioned, considering actual, accesible technologies. Matters of electric energy accumulation in leaden accumulators are examined in detail. Main part of the diploma thesis is about electronic designs of photovoltaic, also called solar, rechargable regulators. These are the main connecting part between photovoltaic panels, accumulator, but also often connected charge, which is appliance. Individual electronic regulators concepts are described narrowly, then compared and evaluated in thesis´ conclusion.
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The apparatus for measuring optimal inclination of photovoltaic panels
KRČKA, Pavel
This Bachelor Thesis deals with the topic of transfer of solar radiation into electric energy in photovoltaic systems. At the beginning the problems of mining and combustion of fossil fuel are highlighted. After that the dispositions (possibilities) of the solar radiation that might be effectively used in photovoltaic systems are described. There is also the photoelectric effect, on which the function of various photovoltaic cell types representing the basic constructional elements of each photovoltaic panel described here in detail. The main part of the text is then focused on development of a tool capable of measuring the optimum angle and position of photovoltaic panels, at which the photovoltaic panels should have the maximum energetic yield during a day in a specific season of a year.
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