Just What Is PV Solar Power?
PV solar power is completely different from other types. Of the 2 major kinds of solar power, active and passive, PV solar power is active. Let us take a look at it.
Solar Panel
Active solar energy relies on solar panels. You could imagine them as flat, rectangular boxes on rooftops.
You will find two main types of solar panel. From a distance, both appear to be rectangular boxes. Both change sunlight into energy, but in two completely different ways. The terms for the two solar panel kinds are actually solar thermal collector as well as photovoltaic module.
1. Solar thermal collector: This solar panel takes in solar power from the sunlight and makes use of it to heat air or water.
2. Photovoltaic module: This 2nd kind of solar panel collects solar energy and converts it to usable electrical power.
Meet the PV
To respond to the question, what's PV solar energy, we have to know what the PV is. The short answer is that PV refers to a photovoltaic module. "P" is actually for photo and "V" for voltaic.
In simple terms, "photo" pertains to sunshine and "voltaic" pertains to electrical power. PV panels convert sunshine into electrical energy. Rays from the sun flows into the solar panel. Electric energy flows out of the solar panel.
A PV solar panel is actually made up of lots of photovoltaic (light to volts) cells. These specific cells are electrically linked, and covered with glass. The glass offers electrical insulation. It is also good protection from weather conditions and other destructive forces.
When minimal power is required, like that required to power a small appliance, a single PV solar panel is sufficient. When much more power is required, an "array" of solar panels is built by attaching panels to one another. If the power would not be provided to the power grid, the solar panel(s) is connected to a charge controller, and battery. If it is intended for on-grid use, the solar panel array would be connected to an electrical inverter.
What Is PV Solar Energy?
Standard silicon solar panels transform around fourteen to seventeen percent of sunshine into usable electricity. That isn't much. Late in 2006, though, a new photo voltaic cell was released. Solar panels that make use of the brand new cell could convert into electricity 22 percent of the daylight they collect. Theoretically, the most that the cells of a solar panel could convert is claimed to be about 26 to 27 percent of incoming sunshine.
How does this work? Let's look at a very simple explanation.
Every photovoltaic cell in a PV photo voltaic panel is a semiconductor. When sunshine hits these cells, a specific part of the sunshine is absorbed by those silicon cells. The cells take in that part of the sunlight's energy. The cells then transfer the absorbed daylight's energy to the electrons within the silicon. The electrons start to circulate, and this produces an electric current. Metallic contacts built into the top and bottom of the PV cells draw off that current and it is dispatched to the grid or battery. It is now usable electrical energy. The power grid sends it on its way, in case you have used an on-grid connection. In case you are using a battery, it's saved in the battery awaiting your need.
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