Solar energy has become one of the most popular renewable energy sources, generating electricity, hot water and helping the environment
What photovoltaic solar energy is and how it works
Experts say that, at any given time, the earth receives up to 10,000 times more solar energy than is needed for human consumption. This, in addition to showing the potential of this resource, responds to how much solar energy can be used. What it is generally known for: to generate electricity or for other uses, such as heating. But how?
Sometimes, this is an issue that is passed by. Therefore, we tell you what is the mechanism that makes it possible for the sun that shines to end up feeding a laptop or any other device in a home.
Photovoltaic solar energy: basic aspects.
Only available when the sun shines (as far as the generation is concerned), the photovoltaic solar energy is what allows it to be captured from sunlight to convert it into electricity with which to supply the needs of any home or commercial area.
If all this is possible it is thanks to what is known as a photovoltaic effect , crucial for the production of electricity from the sun. Several components come into play here. The first, the particles of which sunlight is composed (photons) and its impact on solar panels, with which electrons are released.
It is right there when more essential components of the photovoltaic panels come into play, specifically the conductors that incorporate that, in most cases, are made of silicon. Generally composed of a positive and a negative, they create an electric field through which electrons circulate once activated, so that the current is produced.
Photovoltaic solar panels.
Obviously, the panels are essential within this mechanism. The process described above occurs, in particular, in small portions of the panel, which is divided into a multitude of solar cells made of silicon, generally, or other materials that also allow the use of energy, in addition to favoring a reduction in costs .
Thus, the panels on which the light impacts are formed by a multitude of small cells that give rise to modules and, these, to a panel proper. Although this is taken for granted, it is worth noting: more panels, more electricity generation. Now, calculating the number of panels well is one of the keys to any installation since sinning in excess will push up the costs of the same without the need. If, on the other hand, it is sinned by default, the captured energy will not be sufficient to meet the needs.
Another key step: the conversion of energy.
Although it has already been explained how electricity is generated, there is still a very important aspect to clarify. The one produced by the photovoltaic panels, in direct current, will have to pass to alternating current to power the different equipment and devices of the home.
And this, how is it achieved? With an element that, together with the panels, is essential for any solar energy installation: the inverter. His role in all this is so important, that there are many who refer to this part of the team as the ‘brain of the system’.
Thus, what the investor does is convert the direct current into alternating current, suitable for use in housing, commerce or wherever a solar kit is installed. This technology will also conduct energy to the power grid or to the storage batteries (important, since sunlight is not available 24 hours a day), among other possible functions.
The sun is the source of energy that shows the most dynamic growth worldwide. In addition, the trend can only continue to expand. Therefore, entering this world and understanding it as much as possible is and will be decisive for anyone who wants to cover their needs with solar energy and, thus, leave the list of those who continue to pull electricity generated from fossil sources, with the consequent impact on the planet
Course: Introduction to Photovoltaic Solar Energy.
If you are interested in continuing to learn about this topic, I recommend this free online course on photovoltaic solar energy to expand knowledge about it.
Within renewable energies, today Photovoltaic Solar Energy is a clean, decentralized, modular and reliable technology for generating small and large-scale electric power.