Kharkіv National Automobile and Highway University
Abstract
Problem. Currently, the most commonly used method is the so-called direct method of converting solar radiation into electric current using a variety of solar batteries (SB). The most widely used in the application were silicon SB. Consequently, the question arises as to which optimal parameters should have an electrical load in order to ensure the efficient operation of SB. Goal. Determination of the optimal active load parameter for monocrystalline and polycrystalline SB, which meets the criterion for transmitting maximum power to load. Methodology. The analytical methods of research on the development and application of methods and devices for transforming the energy of the sun into electricity were used. Experimental methods of research and mathematical methods of processing experimental research were used. Results. The analysis of existing types of silicon SB is carried out, their classification is presented. The determination of the optimal active load parameter for monocrystalline and polycrystalline SB is carried out, which corresponds to the criterion of transfer of maximum power to load. The results of experimental studies are presented as volt-ampere characteristics and the dependence of the power of SB on the load current. An analysis of the results of experimental studies showed that for the most efficient operation of the SB, its active load should be maintained in the range from 3 ohms to 3,5 ohms. Originality. The method for determining the optimal electrical load parameters for silicon monocrystal and polycrystalline SB has been improved. The method of correlation of electric loading of SB to their own active resistance is presented. Practical value. The obtained results allow us to determine the optimal electrical load parameters for silicon monocrystalline and polycrystalline SB. If the types of SB in question are compiled into systems with a corresponding serial-parallel connection, then it is necessary to determine the internal resistance of such a system. Applying this principle, you can determine the optimal load parameters for any silicon solar system.Определены оптимальные параметры активной нагрузки для монокристаллических и поликристаллических солнечных батарей (СБ), соответствующие критерию передачи максимальной мощности в нагрузку. Раскрыта и проанализирована классификация СБ. Результаты экспериментальных исследований представлены в виде вольт-амперных характеристик и зависимости мощности СБ от тока нагрузки. Визначено оптимальні параметри активного навантаження для монокристалічних та полікристалічних сонячних батарей (СБ), що відповідають критерію передачі максимальної потужності в навантаження. Розкрито та проаналізовано класифікацію СБ. Результати експериментальних досліджень подано у вигляді вольт-амперних характеристик та залежності потужності СБ від струму навантаження.