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In modern times, when people hear about alternative energy, they immediately start imagining the natural phenomenon that cannot be touched or, on the first sight, cannot be used for anything except for enjoying it, when walking outside of home or office. Wind, sun, water, we experience their presence and their power every day, and for many ages, people couldn’t do anything else, but to admire the infinite and inexhaustible power, which they carry with by. Only recently, in the twentieth century people learned how to use these natural occurrences for the benefit of today’s new developing energetic state of the world and that has caused a lot of positive effects not only in the energetic sector, but also in every part of engineering sphere, especially electrical and electronic engineering. Therefore, the research of the thesis is closely related with the renewable energy extraction and conversion into usable electrical energy. In particular, a solar energy is being exploited in a project as the main energy source.
The research in the project was conducted the way, such as the extracted solar energy could be freely and without any obstruction delivered to a consuming side, while being effectively and accurately monitored. The importance of the system, which is supposed to provide a bridge between the producer, the solar panels, and the consumer, a private user or an AC 110V/230V power network, consists in inexpensive equipment and reliable operation including speed and robustness. Costs and simplicity in the overall system structure are the challenging and stimulating factors in the development of each part in the project.
The system consists out of three fundamental parts. Each part performs strictly defined for its purpose tasks, which include handling of current and voltage, controlling temperature drift, converting analog signals into digital discrete data, processing of the data, and at last being able to display the data on a monitor of PC-based data server. Most of these tasks are managed by two ARM microcontrollers, which were chosen due to their low-cost, extreme low-power, and relative simple operation mode. The presence of safety and robustness in most of the electronic devices allow the system successfully operate in severe conditions, practically everywhere around the globe, dealing with harsh temperatures and extreme humidity.

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