PV solar power is completely different from other types. Of the two major kinds of solar power, active and passive, PV solar power is active. Let's take a look at it.
Solar Panel
Active solar energy relies on solar panels. You might 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 2 completely different ways. The terms for the two solar panel varieties are actually solar thermal collector and photovoltaic module.
1. Solar thermal collector: This solar panel takes in solar power from the sunlight and uses it to heat air or water.
2. Photovoltaic module: This next kind of solar panel collects solar energy and converts it to usable electrical energy.
Meet the PV
To respond to the question, what is PV solar energy, we have to know what the PV is. The short answer is that PV pertains to a photovoltaic module. "P" is actually for photo and "V" for voltaic.
In simple terms, "photo" pertains to sunshine and "voltaic" refers to electrical power. PV panels convert sunshine into electrical energy. Sunshine 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 provides electrical insulation. It is also good safety from weather conditions and other harmful forces.
When minimal power is needed, similar to that essential to power a small appliance, a single PV solar panel is enough. When much more power is required, an "array" of solar panels is built by attaching panels to one another. If the power won't be provided to the power grid, the solar panel(s) is connected to a charge controller, and battery. If it is meant for on-grid use, the solar panel array would be connected to an electrical inverter.
What Is PV Solar Energy?
Standard silicon solar panels convert roughly fourteen to seventeen percent of sunlight into usable electricity. That is not much. Late in 2006, though, a new photo voltaic cell was released. Solar panels that utilize the brand new cell could convert into electricity twenty two 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 it work? Let's look at a really simple explanation.
Every photovoltaic cell in a PV photo voltaic panel is a semiconductor. When sunshine hits those cells, a specific part of the sunshine is absorbed by those silicon cells. The cells take in that part of the sunlight's power. The cells then transfer the absorbed daylight's energy to the electrons within the silicon. The electrons start to circulate, and this generates an electric current. Metal contacts built into the top and bottom of the PV cells draw off that current and it's 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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