Abstract
This article is devoted to the relevant problem of increasing the efficiency of PV systems. The presented analysis discusses the available methods for improving the power generation of PV modules under partial shading. Mathematical models for power loss calculation were compiled based on the results of this analysis. The proposed approach minimizes the negative impact of partial shading on the energy production of PV modules. It is based on the equalization of voltages of parallel-connected arrays of modules by installing additional power elements in them. The proposed solution is promising for various areas; it allows for the minimization of the unfavorable influence of existing urban objects (buildings, trees, communications, etc.) on the energy efficiency of PV modules. The obtained results are useful for the sustainable development of the urban environment in the context of digital transformation. They are the basis for the promising methodology of the parametric optimization of power plants using renewable energy sources.
Highlights
Renewable-energy power plants are increasingly widespread in the world
Some operation features of PV modules are not taken into account, which leads to a significant decrease of efficiency [4]
It can be seen from the graph that the installation of additional power cells significantly reduces the energy losses of the PV battery with partial shading of solar cells, which significantly increases the energy output of the battery operating in such conditions
Summary
Renewable-energy power plants are increasingly widespread in the world. Solar power plants are the most promising due to environmental friendliness and solar radiation availability. The design features of many solar installations lead to the appearance of the effect of long-term partial shading of individual PV modules [3]. The use of such schemes is associated with the limited area of the projected installation, the desire to save space, or the properties of the relief. Uneven illumination of PV modules can occur due to factors independent of design. Examples of such cases are shadowing due to nearby buildings, trees, clouds, and others. Many authors pay a lot of attention to this scientific problem in their works [5,6,7,8,9,10]
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