how solar photovoltaics works
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What is Solar Photovoltaic(SPV)
Technology and How it Works
Solar Photovoltaic Technology is method of generating electricity by
converting Solar radiation in to direct current using Semiconductors
which exhibit Photovoltaic (PV)Effect. The word photovoltaic
actually means "electricity from light.
Solar Photovoltaic (SPV) energy generation refers to the direct
conversion of solar energy into electricity using PV technology.
When Solar Radiation falls in to Solar Photovoltaic Modules(SPV
Module),DC Power is generated, this DC POWER is fed in to the
PCU(Power Conditioning Unit)which converts it in to AC Power and
this AC power is then fed in to Electrical Equipments.
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Solar Photovoltaic Power Plants (SPVPP) are the most important applications using
Photovoltaic Technology because AC power generated through the Plants can be utilized as
per requirement.
Following are the major building blocks of SPVPP.
1.Solar Modules: This is Array of Solar Modules connected in Series /Parallel combination
as per the system designed Power is generated through these SPV Modules
2.Power Conditioning Unit(PCU):PCU is combination of Inverter and Charge controller.
Charge controllersjob is to provide controlled and efficient extraction of Solar Power
Generated through SPV Modules for conversion in to A.C. Power or to charge Batteries.
Inverter converts DC Power to AC power ,synchronizes with local Grid and fed AC power in
to Local Grid/A.C. Distribution Board.
3.Batteries:If user needs power generated at the time when no Solar Power is available
,Batteries are required for charge storage. These batteries will be Charged/Discharged
through PCU.
4.Balance of Systems(BOS): SPV Modules Combiner Boxes, SPV Modules MountingStructures, Control Panels are part of BOS.
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Essential Requirements for setting up SPVPP:Shadow free Space for setting up SPV Modules
Room for setting up PCU ,Batteries and other Controlspreferably near to SPV Modules
Load Estimation
What Solar Photovoltaic Power Plant can do for you
SPVPP output is AC Power which can be directly fed
in to the local grid or it can be using Local A.C.
Distribution Board (Utility Load) to the identified
load)
Customized Solution(System can be designed as per
usage and space availability)
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Ministry of New and Renewable Energy(MNRE) and Chhattisgarh
State Renewable Energy Devlopment Agency (CREDA )Initiatives
for setting up SPV Power Plants
Customized Solutions with support from
System Integrators Registered with
CREDA/MNRE.
81 Rs./Wp or 30% of the total Cost whichever
is less as Central Financial Assistance from
M.N.R.E.
50 Rs./Wp as State Subsidy ,upon sanction of
Central Subsidy
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Power plant division
Our solar power plant division in consortium withinternational companies is specialized in the
setting up of solar photo-voltaic (PV) Power Plants
on an EPC or turnkey basis. The division has justfinished implementing 5 MW Power plant at
Videocon Warora. It conceives & implements solar
power projects from the initial project stage to the
installations, erection,and maintenance, using the
best available components and cutting edge
technical solutions by relying on highly qualified
professionals.
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Power p ant ivisionscope of services
Complete turnkey solutions for mega watt size power plants
Production and supply of solar PV modules
Installation and maintenance of solar power plants
Support for dimensioning and projection of solar power applications
Tailor-made know-how transmission
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Power p ant ivisionSolar PV Modules
Photon modules are IEC 61215 and IEC 61730 certified by TUV
Modules manufactured in latest state-of-art ISO9001:2000 certified plant
Crystalline Si modules are the most efficient and proven technology among all the solarpower technologies and have a market share of more than 70% of the solar pv market
Customer base across five continents in various countries including Germany, Spain,
Italy, France, East African countries and Southern Africa
P
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Power p ant v s on
Balance of Systems
Inverters are sourced from world leaders SMA
or Conergy or KACO - the latest and most
efficient inverters from Germany. Most power
projects worldwide use inverters from these
companies.
Switchgear and other electrical equipment are
also sourced from the best companies as ABB,
Crompton Greaves etc
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Power p ant ivisionTeam Work
The Power Projects division is headed by Mr ABCD and team of 10people who form the core team
The core work of design, supplier identification and project managementis done in-house while all auxiliary work of structural, electrical & civil are
out-sourced to experienced & reputed sub-vendors
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Roof Top Solar Power Generation
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Brief on Roof top solar power
It may be a case of owner's pride, neighbours'
envy. Kilpauk resident D. Suresh seems hardly
annoyed by the frequent disruption in power
supply, unlike his neighbours. The stand-alone
rooftop solar power plant put up by him at his
house is helping him keep his cool.
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Roof top solar power
The solar photovoltaic power plant, with a
capacity of one kilowatt, has been functioning
for the last one-and-half months. After its
installation, I have not experienced any power
disruption and my electricity consumption,
through the conventional EB source, has come
down perceptibly, says Suresh, who holdsdegrees in mechanical engineer and
management
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Roof top solar power
The power plant installed on the rooftop of his
house has 10 solar panels. A dual power
converter, along with 10 batteries of 100
ampere-hours (AH) capacity each, managesthe power supply tapped from the solar
panels. The converter, on the one hand,
distributes power to the equipment and, onthe other, charges the batteries from the solar
panels.
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Roof top solar power
During day, the power plant lights the house
and during night, the converter takes over and
powers the house by drawing power from the
batteries. Mr. Suresh has designed theinstallation in such a manner that he has
excluded energy guzzlers such as air-
conditioners, refrigerators and geysers. If boththe solar plant and the batteries run out of
power, the electrical line would provide
supply. I have three energy sources, he adds.
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Roof top solar power
The capital cost - Rs. 2.5 lakh, is inclusive of
the subsidy of Rs. 80,000 (the consumer's cost
is Rs. 1.7 lakh) provided through the Tamil
Nadu Energy Development Agency (TEDA).
The reliability of power supply and the
contribution towards environment protection
are the factors that encouraged me toconsider solar power. I have managed to save
four to five units of power daily, he adds.