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International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 01 | Jan -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 1737
SOLAR ENERGY CONVERSION AND ITS UTILIZATION
Nayna P. Lokhande1, Nilima G. Maraskolhe2, Shubham S. Lokhande3, Prof. Bhushan S.
Rakhonde4
1 BE, Electrical Engineering Department, DES’sCOET, Maharashtra, India
2 BE, Electrical Engineering Department, DES’sCOET, Maharashtra, India
3 BE, Electrical Engineering Department, DES’sCOET, Maharashtra, India
4Assistant Professor, Electrical Engineering Department, DES’sCOET, Maharashtra, India
---------------------------------------------------------------------***-------------------------------------------------------------------
Abstract - Solar energy is a clean renewable resource with
zero emission, has got tremendous potential of energy which
can be harnessed using a variety of devices. With recent
developments, solar energy systems are easily available for
industrial and domestic use with the added advantage of
minimum maintenance. The electricity requirements of the
world including India are increasing at alarming rate and the
power demand has been running ahead of supply. It is also
now widely recognized that fossil fuels (i.e., coal, petroleum
and natural gas) and other conventional resources, presently
being used for generation of electrical energy, may not either
sufficient or suitable to keep pace with ever increasing
demand of electrical energy of the world. Also generation of
electrical power by cold based steam power plant or nuclear
power plant causes pollution. Solar energy is clean and
itcannot cause pollution and by using solar energy we can
convert large amount of electricity by using inverter.
Key Words: Concentrating solar power, Photovoltaic,
Renewable energy sources, solar energy.
1. INTRODUCTION
One of the most incredible things about photovoltaic
power is its simplicity. It is almost completely solid state,
from the photovoltaic cell to the electricity delivered to the
consumer. Whether the application is a solar calculatorwith
a PV array of less than 1 W or a 100 MW grid-connected PV
power generation plant, all that is required between the
solar array and the load are electronic and electrical
components. Compared to other sources of energy
Human kind has harnessed to make electricity; PV is the
most scalable and modular. Larger PV systems requiremore
electrical bussing, fusing and wiring, but the most complex
component between the solar array and the load is the
electronic component that converts and processes the
electricity: the inverter. In the case of grid-tied PV, the
inverter is the only piece of electronics needed between the
array and the grid. Off-grid PV applications useanadditional
DC to DC converter between the array and batteries and an
inverter with a built-in charger.
Solar photovoltaic (SPV) systems convert sunlight
directly into electricity. A small power system enables
homeowners to generate some or all of their daily electrical
energy demand on their own roof top, exchanging daytime
excess power for its energy needs in nights using SPV
generation, if it is supported by the battery back-up. A SPV
power system can be used to generate electric energy as a
way of distributed generation (DG) for rural areas. Several
approaches have been proposedtoimproveefficiencyofSPV
system and to provide the proper ac voltage required by
residential customers. For this purpose, DC-DC converters
have been explored extensively to meet therequiredelectric
energy demands by these systems using a battery back-up.
Standalone Solar Power Systems are completely
independent from any electric utility grid. They are most
often used in remote areas where electricity is not available
or where the connection fees of the grid are higher than the
cost of an alternative energy system. Standalone solar
systems also known as autonomous, or off grid systems are
used to collect and store solar energy to be used by
household appliances.
These systems typically generate 500 Watts for
small systems. During the day, the electricity generated is
used to power the home and charge the batteries. At night,
and during rainy days, all necessary power is provided by
the battery.
2. OFF GRID SOLAR INVERTER
Off Grid Solar Inverter Consist of Following Blocks:
i) Solar panel
ii) Solar charge controller
iii) Inverter
iv) Battery
v) Loads
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 01 | Jan -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 1738
Fig. 2.1: Block Diagram of Off Grid Solar Inverter
i) SOLAR PANEL
Fig. 2.2: Solar panel
A solar panel is a set of solar photovoltaic modules
electrically connected and mounted on a supporting
structure. A photovoltaic module is a packaged, connected
assembly of solar cells. The solar module can be used as a
component of a larger photovoltaic system to generate and
supply electricity incommercial andresidential applications.
Each module is rated by its DC output power understandard
test conditions (STC), and typically ranges from 100 to 320
watts. The efficiency of a module determines the area of a
module given the same rated output - an 8% efficient 230
watt module will have twice the area of a 16% efficient 230
watt module. Because a single solar module can produce
only a limited amount of power, most installations contain
multiple modules.
Mounting of Solar Panel
a) GROUND MOUNTED
Ground mounted solar power systems consist of solar
modules held in place by racks or frames thatareattachedto
ground based mounting supports.
b) ROOF MOUNTING
Roof-mounted solar power systems consist of solar
modules held in place by racks or frames attached to roof-
based mounting supports.
c) INVERTER
Electrical power is usually transmitted and used in
the form of alternating current. However, some kinds of
electrical generation and storage devices produce direct
current, examples being PV modules and batteries. An
inverter is a power electronic apparatus which converts DC
to AC, allowing the DC power from these generators to be
used with ordinary AC appliances, and/or mixed with the
existing electrical grid.
3. WORKING OF OFF GRID INVERTER
PV array of 120W absorbs the solar energy and
convert the solar energy into electrical energy by
photovoltaic effect. This electrical energy transferred to the
solar charge controller. The main function of solar charge
controller is to protect the battery from over discharge and
over charging. Also it prevents current flowing back to the
solar panel during night. The solarchargecontrollertransfer
electrical energy to charge the battery of 12V , 45A. When
power energy to it cut off, battery supplies the energy to the
inverter circuit. An inverter circuit is power electronic
apparatus which converts DC to AC. This AC 12V fed to the
autotransformer. Then autotransformer step up 12V,90A to
230V, 5A. The AC distribution panel distributes the voltage
to the load which is connected to the solar inverter. Load
having fan of 60W, PC of 250W and tube light of 40W.
4. PHOTOVOLTAICS
Photovoltaic (PV) is a method of generating
electrical power by converting solar radiation into direct
current electricity using semiconductors that exhibit
the photovoltaic effect. Photovoltaic power generation
employs solar panels composed of a number of solar
International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056
Volume: 04 Issue: 01 | Jan -2017 www.irjet.net p-ISSN: 2395-0072
© 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 1739
cells containing a photovoltaic material. Materials presently
used for photovoltaic include mono crystalline
silicon, polycrystalline silicon, amorphous silicon, cadmium
telluride, and copper indiumgalliumselenide/sulfide.Dueto
the increased demand for renewable energy sources, the
manufacturing of solar cells and photovoltaic arrays has
advanced considerably in recent years.
5. PHOTOVOLTAIC SYSTEM
A Photovoltaic system is an arrangement of
components designed to supply usable electric power for a
variety of purposes, using the Sun as the power source.
PV systems may be built in various configurations:
 Off-grid without battery (Array-direct)
 Off-grid with battery storage forDC-onlyappliances
 Off-grid with battery storage forAC&DCappliances
 Grid-tie without battery
 Grid-tie with battery storage
6. SOLAR CELL
A solar cell is also called a photovoltaic cell. It is an
electrical device that converts the energy of light directly
into electricity by the photovoltaic effect. It is a form
of photoelectric cell in that its electrical characteristics e.g.
current, voltage, or resistance vary when light is incident
upon it which, when exposed to light, can generate and
support an electric current without being attached to any
external voltage source.
The operation of a photovoltaic (PV) cell requires 3 basic
attributes:
 The absorption of light, generating either electron-
hole pairs or excitons.
 The separation of charge carriers of opposite types.
 The separate extraction of those carriers to an
external circuit.
7. CONCLUSION
Since this paper report is based on the non-
conventional resources of energy i.e. we charge the battery
with the help of solar panel by capturing the sunlight and
give the charged battery to the load as a result of which the
load on the grid is somewhat reduced and plays a vital role
in protecting the damage cause to the distribution
transformer. The proper designing of the solar panel along
with the battery change over helped us to overcome this
problem. This system generates power up to 500 W and it is
used for home appliances like fans, tube light, computer. As
solar energy is renewable source of energy so it will not
generate any kind of pollution. This system is useful in areas
where if this system is in large scale then we can connect to
the grid and can provide extra generated power to the grid.
REFERENCES
[1] A.M. Reis, N.T. Coleman, M.W. Marshall, P.A.
Lehman, and C.E. Chamberlin, “Comparison OF PV
Module Performance before and after 11 years of
field exposure”,Proceedings of the 29th IEEE
Photovoltaics Specialists Conference New Orleans,
Louisiana May, 2002.
[2] C.R. Osterwald, A. Anderberg, S. Rummel, and L.
Ottoson, “Degradation Analysis of Weathered
Crystalline-Silicon PV Modules”,29th IEEE PV
Specialists Conference, New Orleans, Louisiana,
May 20-24, 2002.
[3] Robert H.Annan,Director, “SOLAR 2000: Office of
solar energy conversion strategy”,Office of solar
energy conversion U.S. Department of Energy,
Washington, DC, U.S.A.
[4] ZaharimAzami, Razali Ahmad Mahir, Gim Tee Pei,
SopianKamaruzzaman,“Time Series Analysis of
Solar Radiation Data in the Tropics”,European
Journal of Scientific Research, Vol.25 No.4 (2009),
pp.672-678.

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Solar energy conversion and its utilization

  • 1. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 01 | Jan -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 1737 SOLAR ENERGY CONVERSION AND ITS UTILIZATION Nayna P. Lokhande1, Nilima G. Maraskolhe2, Shubham S. Lokhande3, Prof. Bhushan S. Rakhonde4 1 BE, Electrical Engineering Department, DES’sCOET, Maharashtra, India 2 BE, Electrical Engineering Department, DES’sCOET, Maharashtra, India 3 BE, Electrical Engineering Department, DES’sCOET, Maharashtra, India 4Assistant Professor, Electrical Engineering Department, DES’sCOET, Maharashtra, India ---------------------------------------------------------------------***------------------------------------------------------------------- Abstract - Solar energy is a clean renewable resource with zero emission, has got tremendous potential of energy which can be harnessed using a variety of devices. With recent developments, solar energy systems are easily available for industrial and domestic use with the added advantage of minimum maintenance. The electricity requirements of the world including India are increasing at alarming rate and the power demand has been running ahead of supply. It is also now widely recognized that fossil fuels (i.e., coal, petroleum and natural gas) and other conventional resources, presently being used for generation of electrical energy, may not either sufficient or suitable to keep pace with ever increasing demand of electrical energy of the world. Also generation of electrical power by cold based steam power plant or nuclear power plant causes pollution. Solar energy is clean and itcannot cause pollution and by using solar energy we can convert large amount of electricity by using inverter. Key Words: Concentrating solar power, Photovoltaic, Renewable energy sources, solar energy. 1. INTRODUCTION One of the most incredible things about photovoltaic power is its simplicity. It is almost completely solid state, from the photovoltaic cell to the electricity delivered to the consumer. Whether the application is a solar calculatorwith a PV array of less than 1 W or a 100 MW grid-connected PV power generation plant, all that is required between the solar array and the load are electronic and electrical components. Compared to other sources of energy Human kind has harnessed to make electricity; PV is the most scalable and modular. Larger PV systems requiremore electrical bussing, fusing and wiring, but the most complex component between the solar array and the load is the electronic component that converts and processes the electricity: the inverter. In the case of grid-tied PV, the inverter is the only piece of electronics needed between the array and the grid. Off-grid PV applications useanadditional DC to DC converter between the array and batteries and an inverter with a built-in charger. Solar photovoltaic (SPV) systems convert sunlight directly into electricity. A small power system enables homeowners to generate some or all of their daily electrical energy demand on their own roof top, exchanging daytime excess power for its energy needs in nights using SPV generation, if it is supported by the battery back-up. A SPV power system can be used to generate electric energy as a way of distributed generation (DG) for rural areas. Several approaches have been proposedtoimproveefficiencyofSPV system and to provide the proper ac voltage required by residential customers. For this purpose, DC-DC converters have been explored extensively to meet therequiredelectric energy demands by these systems using a battery back-up. Standalone Solar Power Systems are completely independent from any electric utility grid. They are most often used in remote areas where electricity is not available or where the connection fees of the grid are higher than the cost of an alternative energy system. Standalone solar systems also known as autonomous, or off grid systems are used to collect and store solar energy to be used by household appliances. These systems typically generate 500 Watts for small systems. During the day, the electricity generated is used to power the home and charge the batteries. At night, and during rainy days, all necessary power is provided by the battery. 2. OFF GRID SOLAR INVERTER Off Grid Solar Inverter Consist of Following Blocks: i) Solar panel ii) Solar charge controller iii) Inverter iv) Battery v) Loads
  • 2. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 01 | Jan -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 1738 Fig. 2.1: Block Diagram of Off Grid Solar Inverter i) SOLAR PANEL Fig. 2.2: Solar panel A solar panel is a set of solar photovoltaic modules electrically connected and mounted on a supporting structure. A photovoltaic module is a packaged, connected assembly of solar cells. The solar module can be used as a component of a larger photovoltaic system to generate and supply electricity incommercial andresidential applications. Each module is rated by its DC output power understandard test conditions (STC), and typically ranges from 100 to 320 watts. The efficiency of a module determines the area of a module given the same rated output - an 8% efficient 230 watt module will have twice the area of a 16% efficient 230 watt module. Because a single solar module can produce only a limited amount of power, most installations contain multiple modules. Mounting of Solar Panel a) GROUND MOUNTED Ground mounted solar power systems consist of solar modules held in place by racks or frames thatareattachedto ground based mounting supports. b) ROOF MOUNTING Roof-mounted solar power systems consist of solar modules held in place by racks or frames attached to roof- based mounting supports. c) INVERTER Electrical power is usually transmitted and used in the form of alternating current. However, some kinds of electrical generation and storage devices produce direct current, examples being PV modules and batteries. An inverter is a power electronic apparatus which converts DC to AC, allowing the DC power from these generators to be used with ordinary AC appliances, and/or mixed with the existing electrical grid. 3. WORKING OF OFF GRID INVERTER PV array of 120W absorbs the solar energy and convert the solar energy into electrical energy by photovoltaic effect. This electrical energy transferred to the solar charge controller. The main function of solar charge controller is to protect the battery from over discharge and over charging. Also it prevents current flowing back to the solar panel during night. The solarchargecontrollertransfer electrical energy to charge the battery of 12V , 45A. When power energy to it cut off, battery supplies the energy to the inverter circuit. An inverter circuit is power electronic apparatus which converts DC to AC. This AC 12V fed to the autotransformer. Then autotransformer step up 12V,90A to 230V, 5A. The AC distribution panel distributes the voltage to the load which is connected to the solar inverter. Load having fan of 60W, PC of 250W and tube light of 40W. 4. PHOTOVOLTAICS Photovoltaic (PV) is a method of generating electrical power by converting solar radiation into direct current electricity using semiconductors that exhibit the photovoltaic effect. Photovoltaic power generation employs solar panels composed of a number of solar
  • 3. International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 01 | Jan -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 1739 cells containing a photovoltaic material. Materials presently used for photovoltaic include mono crystalline silicon, polycrystalline silicon, amorphous silicon, cadmium telluride, and copper indiumgalliumselenide/sulfide.Dueto the increased demand for renewable energy sources, the manufacturing of solar cells and photovoltaic arrays has advanced considerably in recent years. 5. PHOTOVOLTAIC SYSTEM A Photovoltaic system is an arrangement of components designed to supply usable electric power for a variety of purposes, using the Sun as the power source. PV systems may be built in various configurations:  Off-grid without battery (Array-direct)  Off-grid with battery storage forDC-onlyappliances  Off-grid with battery storage forAC&DCappliances  Grid-tie without battery  Grid-tie with battery storage 6. SOLAR CELL A solar cell is also called a photovoltaic cell. It is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell in that its electrical characteristics e.g. current, voltage, or resistance vary when light is incident upon it which, when exposed to light, can generate and support an electric current without being attached to any external voltage source. The operation of a photovoltaic (PV) cell requires 3 basic attributes:  The absorption of light, generating either electron- hole pairs or excitons.  The separation of charge carriers of opposite types.  The separate extraction of those carriers to an external circuit. 7. CONCLUSION Since this paper report is based on the non- conventional resources of energy i.e. we charge the battery with the help of solar panel by capturing the sunlight and give the charged battery to the load as a result of which the load on the grid is somewhat reduced and plays a vital role in protecting the damage cause to the distribution transformer. The proper designing of the solar panel along with the battery change over helped us to overcome this problem. This system generates power up to 500 W and it is used for home appliances like fans, tube light, computer. As solar energy is renewable source of energy so it will not generate any kind of pollution. This system is useful in areas where if this system is in large scale then we can connect to the grid and can provide extra generated power to the grid. REFERENCES [1] A.M. Reis, N.T. Coleman, M.W. Marshall, P.A. Lehman, and C.E. Chamberlin, “Comparison OF PV Module Performance before and after 11 years of field exposure”,Proceedings of the 29th IEEE Photovoltaics Specialists Conference New Orleans, Louisiana May, 2002. [2] C.R. Osterwald, A. Anderberg, S. Rummel, and L. Ottoson, “Degradation Analysis of Weathered Crystalline-Silicon PV Modules”,29th IEEE PV Specialists Conference, New Orleans, Louisiana, May 20-24, 2002. [3] Robert H.Annan,Director, “SOLAR 2000: Office of solar energy conversion strategy”,Office of solar energy conversion U.S. Department of Energy, Washington, DC, U.S.A. [4] ZaharimAzami, Razali Ahmad Mahir, Gim Tee Pei, SopianKamaruzzaman,“Time Series Analysis of Solar Radiation Data in the Tropics”,European Journal of Scientific Research, Vol.25 No.4 (2009), pp.672-678.