Solar Panel


Solar panel

Solar panel are one of the major technical innovations of our lifetime and are beginning to change the way we look at our energy needs, now and in the years to come.

This electricity can then be fed into your home’s mains electricity supply.

Solar panel are an environmentally friendly way of producing electricity for your home. The electricity produced by your solar panels will be used to power any appliances currently in use within your home.

Inside a Solar Cell

solar cells come in various sizes. Some are tinier than a stamp. Some are 5 inches (12 centimeters) across. PV cells are made from layers of semi-conducting material, usually silicon. When sun light on the cell it creates an electric field across the layers. The stronger the sunshine, the more electricity is produced. Groups of cells are mounted together with series and parallel in panels or modules that can be mounted on roof.

A typical simple cell has two layers of silicon. One is known as n-type. The other is p-type. The layers are different from each other.

solar panel (cell)

How Solar Cells Make Electricity

The process of making electricity begins when the silicon atoms absorb some light. The light’s energy knocks some electrons out of the atoms. The electrons fl ow between the two layers. The flow makes an electric current. The current can leave the cell through the metal contacts and be used.

When light hits a solar cell, much of its energy is wasted. Some light bounces off or passes through the cell. Some is turned into heat. Only light with the right wavelengths, or colors, is absorbed and then turned into electricity.

single simple solar cell makes only a little electricity. For most purposes more is needed. For this reason, cells are often linked together in groups known as solar modules. A solar module has a frame that holds the cells. Some modules are several feet long and wide.

They usually can produce up to a few hundred watts of electricity. If more power is needed, modules can be joined together to form a large solar array. Modules are sometimes called solar panels. Arrays are also sometimes called solar panels. Whatever you call a group of solar cells,

The fact remains: the more cells you link together, the more electricity you make. With enough modules, huge amounts of power are possible.

Usually solar panels and a few wires cannot by themselves supply electricity to a building. More equipment is needed. Solar cells make DC electricity. This is fine for some electronic devices. But home appliances and lights usually run on AC. Houses are generally wired for AC. To change the DC to AC, a device is needed , it is called an inverter.

Smart solar modules

Several companies have begun embedding electronics into PV modules. This module of solar panel enables performing maximum power point tracking (MPPT) for each module individually, and the measurement of performance data for monitoring and fault detection at module level. Some of these solutions make use of power optimizer.

These solar module are available in different voltage rating.

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