solar lab 1

solar lab 1 - Nicole Girsch ECEN 214-507 February 8, 2008...

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Nicole Girsch ECEN 214-507 February 8, 2008 Solar Lab 1 (Lab 2) 1. Explain in your own words how solar panels take light and turn it into electric energy. Include a description of the role of an inverter in solar systems. Light energy is converted into electrical energy through the use of solar panels. As photons in sunlight hit the solar panel, which is made up of many individual solar cells, they are absorbed by the semiconducting material, such as silicon, that the cell is made up of. Negatively charged electrons are knocked loose from their atoms, disrupting the crystal lattice, allowing them to move freely through the positively- charged layer, creating a current and producing electricity. The current goes through a circuit and the returning electrons fill previously evacuated holes. An array of solar panels converts solar energy into direct current (DC) electricity. Sometimes, an inverter is used in which the DC current enters the inverter, turning DC electricity into 120 or 240-volt AC electricity needed for home appliances. An inverter is an
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This note was uploaded on 11/03/2009 for the course ECEN 214 taught by Professor Su during the Spring '08 term at Texas A&M.

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solar lab 1 - Nicole Girsch ECEN 214-507 February 8, 2008...

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