Parts Used In Completed Solar PV system......

A Solar PV System:

A Solar PV System may comprise of may parts and those parts may comprise of some more parts.

First we are going know what are the major key components of the system which makes it to convert solar energy into useful electrical energy.

 

COMPONENTS:

Photovoltaic Panels.

Solar Inverts.

PV Mounting Structure.

Batteries.

 

Photovoltaic Panels:

This part is THE most important part of the system. Panels are the parts which absorbs solar energy from the sun and converts into electrical energy right away at the panel junction box. Lets talk about how these solar panels convert energy of sun into useable electrical energy. Solar panels comprise of may small solar cells which are made from silicon. A solar cell is a solid state electrical device converts the sun light into electrical energy by photovoltaic effect. These solar cells can be made up from many type of substances. The major cells which we generally use are made up of silicon. Let me give you a brief on type of substances solar cells.

1. Amorphous Silicon solar cell (a-Si)
2. Bio-hybrid solar cell
3. Buried contact solar cell
4. Cadmium telluride solar cell (CdTe)
5. Concentrated PV cell (CVP and HCVP)
6. Copper indium gallium selenide solar cells (CI(G)S)
7. Crystalline silicon solar cell (c-Si)
8. Dye-sensitized solar cell (DSSC)
9. Gallium arsenide germanium solar cell (GaAs)
10. Hybrid solar cell
11. Luminescent solar concentrator cell (LSC)
12. Micro-morph (tandem-cell using a-Si/μc-Si)
13. Mono-crystalline solar cell (mono-Si)
14. Multi-junction solar cell (MJ)
15. Nano-crystal solar cell
16. Organic solar cell (OPV)
17. Perovskite solar cell
18. Photo-electrochemical cell (PEC)
19. Plasmonic solar cell
20. Plastic solar cell
21. Polycrystalline solar cell (multi-Si)
22. Polymer solar cell
23. Quantum dot solar cell
24. Solid-state solar cell
25. Thin film solar cell (TFSC)
26. Wafer solar cell,  

 

These are the solar cell that can be used in solar panels. The solar cells which are widely used in the market or by companies or by individual are:

Poly- Crystalline.

Mono- Crystalline.

Amorphous.

Thin Film.

 

Poly-Crystalline:

 It is also called polysilicon or poly-Si, is a high purity, polycrystalline form of silicon, used as a raw material by the solar photovoltaic and electronics industry. These cells are effectively a slice cut from a block of silicon, consisting of a large number of crystals. They have a speckled reflective appearance and again you can you see the thickness of the slice. These cells are slightly less efficient and slightly less expensive than mono-crystalline cells and again need to be mounted in a rigid frame.

Mono- Crystalline:

These cells are cut from a single crystal of silicon- they are effectively a slice from a crystal.
In appearance, it will have a smooth texture and you will be able to see the thickness of the slice. These are the most efficient and the most expensive to produce. They are also rigid and must be mounted in a rigid frame to protect them.

Amorphous:

These cells are manufactured by placing a thin film of amorphous (non crystalline) silicon onto a wide choice of surfaces. These are the least efficient and least expensive to produce of the three types. Due to the amorphous nature of the thin layer, it is flexible, and if manufactured on a flexible surface, the whole solar panel can be flexible.One characteristic of amorphous solar cells is that their power output reduces over time, particularly during the first few months, after which time they are basically stable. The quoted output of an amorphous panel should be that produced after this stabilization.

Thin Film:
A thin-film solar cell, also called a thin-film photovoltaic cell, is a second generation solar cell that is made by depositing one or more thin layers, or thin film of photovoltaic material on a substrate, such as glass, plastic or metal.Thin-film has always been cheaper but less efficient than conventional c-Si technology. However, they significantly improved over the years, and lab cell efficiency for CdTe and CIGS are now beyond 21 percent, outperforming multi-crystalline silicon, the dominant material currently used in most solar PV systems.

Lets Talk About Photovoltaic Effect:
The photovoltaic effect is the creation of voltage or electric current in a material upon exposure to light and is a physical and chemical phenomenon. The standard and obvious photovoltaic effect is directly related to the photoelectric effect, though they are different processes. When the sunlight or any other light is incident upon a material surface, the electrons present in the valence band absorb energy and, being excited, jump to the conduction band and become free. The chemical bonds of the material are vital for the process to work, as crystallized atoms are ionized and creates a chemical electric imbalance, driving the electrons. These highly excited, non-thermal electrons diffuse, and some reach a junction where they are accelerated into a different material by a built-in potential (Galvani potential). This generates an electromotive force, and thus some of the light energy is converted into electric energy.

 

 

 

 

 

All Right! New Topic Types of Solar Power Plants Use By People.......

Types of Solar Power Plants

Countries all over the world have decided to have solar power plants installed. People are getting conscious about saving the environment and this led them to study about energy of sun and its usefulness and its financial feasibility. There are many different kinds of solar power plants which can be installed. It is possible to make use of solar power plants in an active and passive manner. A solar power plant can be called active when the energy from the sun is converted directly into a useable form which can be used for powering all kinds of appliances that are present in the house. Passive use of solar energy takes place when houses and building have been created in such a manner that they get the maximum exposure to the rays of the sun.

There are many different kinds of solar power plants. They include the Photovoltaic Solar Energy Plant, Solar Thermal Energy Plant and Concentrating Power Plant.

 

Photovoltaic Solar Energy Plant:

The electricity produced by this plant is the substitute of our regular gird electricity. Photovoltaic cells or PV cell or solar panels or solar modules etc. captures the energy of the sun and generates the electricity. This process is clean and simple and it does not involve injecting any kind of smoke or harmful chemicals into the atmosphere. A lot of companies and individuals have installed solar power plant in there home premises so that they can derive maximum amount of energy from them and also reduce their dependence on the traditional forms of electricity.

 

Solar Thermal Energy Plant: A solar thermal energy plant will be used for creating solar generated heaters which can be used for heating water and also as an indoor heating system. Thermal cells will be used to capture the energy which has been generated by the sun and then convert it into heat energy. It is also possible to make use of this energy for cooking purposes and also for drying clothes. Low temperatures can be used for heating water as well as swimming pools. Medium heat is used for heating up the inside of homes as well as office buildings. High temperatures will help in generating the electricity which is needed for everyday uses in homes and offices.

 

Concentrating power plant – The method of functioning of these solar power plants is similar to that of the photovoltaic solar energy plants. The extra addition in these concentrating power plants is that they make use of mirrors and lenses in order to capture energy from the rays of the sun. The light from the sun will be directed towards the photovoltaic cells and they will be converted into heat energy. Usually very big companies make use of these concentrating power plants for utilizing solar energy.

 

The presence of solar power plants in many parts of the world has made it possible for the energy from the sun to be utilized in the right manner. They help in reducing the consumption of electricity to a large extent.

Solar Energy Benefits Continued...

Here are some benefits of solar energy.

 

Solar Power helps to slow/stop GLOBAL WARMING:

Global warming threatens the survival of human society, as well as the survival of countless species living on plant EARTH. Luckily, decades or even centuries of research have led to efficient solar panel systems that create electricity without producing global warming pollution. Solar power is now very clearly one of the most important solutions to the global warming crisis.

 

Solar Power Provides Energy Independence:

Similar to the energy boost, solar power provides the great benefits of energy independence. Again, the FUEL for solar panels cannot be bought or monopolized. Its is free for all of us. Once you have solar panels on your rood, you have an essentially independent source of electricity that is all your. This is important for Individuals, but also for cities, countries, and even companies. Two days back I read about Ukraine's clean-tech initiatives and projects. I discovered that Ukraine in recent years has saved approximately $3 billion in reduced oil and gas imports from Russia, thanks to the solar power plants which is IMPRESSIVE.

 

Now people Its Time for jobs from solar YES!

As a source of energy, solar power is a job-creating powerhouse. Money invested in solar power creates two to three times more jobs than money invested in coal or natural gas. This is shown in sample chart below:

 

Some More Benefits or Advantages are listed below:

• Solar energy is not only sustainable, it is renewable and this means that we will never run out of it. It is a natural source of power as it is possible to generate electricity.
• The creation of solar energy requires little maintenance. Once the solar panels have been installed and are working at maximum efficiency there is only a small amount of maintenance required each year to ensure they are in working order.
• They are a silent producer of energy. There is absolutely no noise made from photovoltaic panels as they convert sunlight into usable electricity.
• There are continual advancements in solar panel technology which are increasing the efficiency and lowering the cost of production, thus making it even more cost effective.
• During operation solar electricity power plants produce zero emissions.

Need Of Solar energy continued.......

Some Solid Reasons To Go Solar:

• Its Environmental Friendly: By Installing small solar plant on to your house vicinity will help you to decrease earths carbon content and helps you to gain carbon credits.
• It’s a solid home investment: Many home improvements that you will make, will not add the same value to your house. Solar energy will save you money each month.
• Solar Plant equals incremental value of property: The investment that you made in solar will add value to your property. Its not a car whose value decreases every year, it grows drastically like you buy a house and by helping you not to pay too mach money on your electricity bills or no money on your electricity bills.
• Low Maintenance Cost: The cost of maintaining a is more than maintaining a solar plant. How?, if you have install a solar plant properly you just need to clean the solar panels twice a weak or it depends upon your countries weather, line in India its all the time dusty so we clean our panels thrice a weak.   
• Solar can actually make you money!  In certain parts of the world, governments of some countries have net metering system which helps in reducing electricity bills by subtracting electricity used from the grid by electricity used from solar plant. And in some countries they have system which allows excess solar energy pushed back onto the grid and can be sold. This could provide an extra source of income.
• Being ahead of the curve.  The future of energy is in renewable and clean energy.  By converting to solar energy now, you’d be a step ahead.
• Solar Energy is cool! Let’s face it, what’s cooler than the sun powering your home?
• Either way, you can’t keep the money.  Whether you’re spending money to make an investment in solar energy, or giving that money to your electricity provider, that money is still being spent.  Deciding to go solar is very much similar to deciding to purchase a home.  You can invest in yourself and take control of your energy costs, or pay your Electricity provider for rented energy monthly.

Why we need solar energy.
Well Solar energy has been there for us for centuries but we aren't utilizing the full capacity of solar energy which in abundant.

Solar Energy is choice with many benefits:

• First Its FREE.

There are no taxes on it and when you install a solar plant the government of your country will give you rebates on house taxes and also gives your carbon credit.

• Second Its Clean.

Solar energy can be used in heating or in cooling up your house buy zero impact on the global climate.

• Third Its Infinite.

Like non-renewable energy resources like oil, coal and natural gas are like to become scarce but its not in case of solar it will be there for limitless time period and can produce electric energy.