RESEARCH ON THE STABILITY AND SIMULATION OF THE ELECTRICAL AND THERMAL PARTS OF A HYBRID PHOTOVOLTAIC THERMAL COLLECTOR
The article is dedicated to the analysis of electrical models intended for the development, design, and research of systems for converting solar radiation energy into electrical and thermal energy. The paper presents electrical models of the process of converting solar radiation into electrical ener...
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| Datum: | 2025 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | Ukrainian |
| Veröffentlicht: |
Institute of Renewable Energy National Academy of Sciences of Ukraine
2025
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| Online Zugang: | https://ve.org.ua/index.php/journal/article/view/531 |
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| Назва журналу: | Vidnovluvana energetika |
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Vidnovluvana energetika| Zusammenfassung: | The article is dedicated to the analysis of electrical models intended for the development, design, and research of systems for converting solar radiation energy into electrical and thermal energy. The paper presents electrical models of the process of converting solar radiation into electrical energy and the process of converting solar radiation into thermal energy. These models utilize a current source and a voltage source, which specifically model the processes of converting one form of energy into another. A stability analysis was conducted, determining the equilibrium point and asymptotic stability. The characteristic equation, from which the stability conditions are evident, is shown. Emphasis is placed on the methods of conducting simulations, and ways to implement such simulations using software tools are provided. A simulation was carried out, demonstrating that the process of photon absorption and the formation of charge carriers and phonons, despite the transient process, tends towards an equilibrium value. Dependencies of the output voltage and output current on the load at the output were obtained. It is shown that the voltage across the load, as its resistance changes to the maximum value, tends towards the voltage value of the voltage source, which models the open-circuit voltage of a photovoltaic cell or models the maximum temperature difference of a solar collector. It is also shown that the output current, at the minimum load resistance, has the initial value of the current source, which is the short-circuit current, and tends towards zero as the load resistance increases. This behavior corresponds to the current-voltage characteristic of a photovoltaic cell and the thermal processes in a solar collector. |
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