How Solar Photovoltaics Works

7/31/2019 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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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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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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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.

How Solar Photovoltaics Works

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