General knowledge of PV arrives again, let’s take a look with Beebeejump~
Q1: What are‘Photovoltaics’ (solar electricity) or ‘PV’?
A: What do we mean by photovoltaics? The word itself helps to explain how photovoltaic (PV) or solar electric technologies work. First used in about 1890, the word has two parts: photo, a word derived from the Greek word ‘phos’- which means light; and volt, which is a measurement unit named after Alessandro Volta (1745-1827), a pioneer in the study of electricity. So, photovoltaics could literally be translated as ‘light-electricity’, and that’s just what photovoltaic materials and devices do; they convert light energy to electricity, as Edmond Becquerel and others discovered in the 18th Century.
Q2: What are the components of a Photovoltaic (PV) system?
A: A PV system is made up of different components. These include PV modules (groups of PV cells), which are commonly called PV solar panels; one or more batteries; a charge regulator or controller for a stand-alone system; an inverter for a utility-grid-connected system and when alternating current (AC) rather than direct current (DC) is required; cables; and mounting hardware or a framework.
Q3: How long do photovoltaic (PV) systems last?
A: A PV system that is designed, installed, and maintained well will operate for more than 20 years. The basic PV module (interconnected, enclosed panel of PV cells) has no moving parts and can last more than 25 years. The best way to ensure and extend the life and effectiveness of your PV system is by having it installed and maintained properly. Experience has shown that most problems occur because of poor or shoddy system design, installation and maintenance.
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