Efficiency of materials
A photovoltaic installation allows transforms solar energy into direct current through the photovoltaic effect.
This phenomenon involves the use of “semi-conductors”, the best known of which is silicone.
The advantages of photovoltaic technology are as follows:
• Absence of any form of pollution;
• Saving of fossil fuels;
• Excellent reliability (usual life-span at least 20 years);
• Low cost of installation and maintenance;
• Modular structure (to increase power just add another module).
The main applications of photovoltaic energy are:
1. plants with system of accumulation for users off the grid;
2. plant for users connected to low voltage networks;
3. power plants, generally connected to medium voltage grids.
To render the energy generated by photovoltaic panels suitable for domestic and industrial requirements, it is necessary to transform direct into alternative current, in other words to bring it into line with the functioning of the public electricity grid. This is done by an inverter between the modules and the grid.
In a nutshell, a photovoltaic system comprises:
• Modules and photovoltaic panels;
• Supports to attach the modules to the ground or any kind of building;
• Electric wiring etc., cabinets to house the equipment.
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