This document summarizes a student project to provide dual power supply through solar energy and a generator to a rural highway laboratory. It outlines the aims, objectives, and scope of installing solar panels, batteries, and an inverter to power key laboratory equipment for over 15 hours per day without taxes. It also involves installing a generator as a backup power supply. The methodology section describes the solar components used, power calculations, and installation procedures. Testing showed the solar array outputs 39-42 volts DC which charges the batteries and powers the inverter to output 220 volts AC for laboratory loads. It concludes the solar system provides renewable energy with little maintenance and recommends its use in other facilities.

1. PROVISION OF DUAL POWER SUPPLY
TO RURAL HIGHWAY LABORATORY
AJANI, JOHNSON OLATUNJI (PD1600025)
YUSUFF, ARISEKOLA AFEEZ (PD1600029)
TAIWO, IDRIS ADEWALE (PD1600023)
SANUSI, ABAYOMI (PD1600024)
ORILADE, MAXWELL (PD1700021)
1
SEPTEMBER 2021
BY

2. Presentation outline
Aim and Objectives
Scope of the Work
Introduction
Literature Review
Methodology
Conclusion and Recommendation
References
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3. Aim
The aim of this study is to install Solar powered supply
and compared with the electrification of a model farm
settlement
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Objectives
 To get alternative means of power supply for the laboratory in the
rural area for better comfortability when there is no power supply
from the national grid
 Solar as an alternative means of power supply that can supply
energy for more than 15hours per day without payment of tax
 Generator as an alternative means of power supply that can supply
energy for more than 15hours per day without any breakage

4. Scope of work
•The work is limited to the provision of dual power
supply (solar and generator power supply) to the rural
highway laboratory where stable and continuous power
supply is required for use.
•Free and abundant solar energy will be converted by
solar panel into controlled and guided electrical energy
which will charges 12V, 100AH battery that will power
the laboratory.
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5. Introduction
•The power supply unit is the part of the
hardware that is used to convert the power
provided from the outlet into usable power to
many parts inside an electrical device.
•Every energy supply must drive its load, which
is connected to it. Depending on its design.
•The power supply can is an electrical device
used to give electrical supply to electrical loads.
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6. Introduction Cont’d
• Variable AC Power Supply
• Unregulated Linear Power Supply
• Input transformer
• Rectifier
• Filter Capacitor
• Bleeder Resistor
• Programmable Power Supply
• Computer Power Supply
• Regulated Linear Power Supply
• Smoothing
• Voltage Regulator
• Series regulator
• Generator
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Power supply and different types of power supply

7. Introduction Cont’d
The step by step conversion of 230V AC to 12V DC
is discussed below;
•A step-down transformer converts the 230V AC
into12v.
•The bridge rectifier is used to change AC to DC
•A capacitor is used to filter the AC ripples and
gives to the voltage regulator.
•Finally, voltage regulator regulates the voltage to
5V and finally, a blocking diode is used for taking
the pulsating waveform.
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8. Literature Review
•The Highway Engineering Laboratory is a teaching and
research laboratory, equipped to conduct standard
tests for asphalt pavement design and paving
materials
•The modern-day generator works on the principle of
electromagnetic induction discovered by Michael
Faraday in 1831-32.
•It is also equipped to support the local companies in
designing asphalt mixes and process most important
tests on Asphalt concrete.
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9. Literature Review
Cont’d
Experiments that can be conducted in the Highway
laboratory.
•Proctor Compaction
•Modified Compaction
•Field Density by Sand Cone
•Field Density by Core Cutter
•California Bearing Ration (CBR)
•Penetration
•Flash and Fire point
•Softening Point
•Ductility
•Marshall Stability
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10. Literature Review
Cont’d
Main Components of A Generator
•Engine
•Alternator
•Fuel System
•Voltage Regulator
•Cooling and Exhaust Systems
•Lubrication System
•Battery Charger
•Control Panel
•Main Assembly / Frame
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11. Literature Review
Cont’d
•Solar electric systems are a popular choice
among renewable energy options due to the
relatively low maintenance requirements
and the long lifetime of many of the system
components.
•Photovoltaic cell, is an electrical device that
converts the energy of light directly into
electricity by the photovoltaic effect, which
is a physical and chemical phenomenon.
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12. Literature Review
Cont’d
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13. Methodology
Component used for Solar Energy Supply
Installation
•DC solar panel 100W
•Charge Controller
•Battery
•DC Bulb three 3W
•DC fan 30W
•Cable
•Fuse
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14. DESIGN ANALYSIS FOR SOLAR ENERGY
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Methodology Cont’d
Appliance Quantity Rating (W) Total
power(W)
Usage (h) Wh/day
Lighting Points 10 26 260 12 3120
Refrigerator 1 200 200 10 2000
Laptop 1 60 60 5 300
Fan 6 60 360 10 3,600
Pumping manchine 1 0.5hp /373 373 0.5 187
Phantom Loads like;Phone
charger e.t.c 6 10 60 3 180
Total 1,313 9387

15. The Solar Panel Sizing Calculation
•Solar panels (a.k.a. Photovoltaic or PV modules) vary in
length and breadth and are often about 2 inches thick.
They are generally about 15 kgs or less, but the larger
ones (5' x 3') can be cumbersome to carry on the roof or
pole.
•The number of solar panels you will need depends
primarily upon the amount of electricity you are trying
to produce and the insolation of the area.
•There are solar panels in a variety of wattages. Watts are
the main measure of a solar panel, along with nominal
voltage. 15
Methodology Cont’d

16. INSTALLATION PROCEDURES OF SOLAR ENERGY
SUPPLY TO THE LABORATORY
•The solar panels which can be called solar array were
installed on the pole or on a building roof-top with
correct tilt angle of about 300 south.
•The solar panels were connected in series to generate
a voltage of about 40Volt to power the solar regulator.
•The solar controls the charging of the batteries of ten
in number also connected in parallel to form a 40Volt
setup needed by the inverter.
•The inverter then output the alternating current
output which is useful for home use.
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17. Testing and Result
Components Input Signal Output Signal
Solar array Sunlight/solar energy 39-42Volt DC
Solar
regulator
39-42Volt DC 29.6Volt (max) DC
Battery 29.6Volts DC 26Volt DC
Inverter 10.5- 29.6Volts DC 220Volt AC, 50Hz
Loads 220Volt AC, 50Hz Work 17

18. Conclusion
•The installation of Generator and design and
installation of solar electricity was a gradual process of
selecting materials through thorough calculations. All
the components were tested to confirm this project.
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Recommendation
 This solar electricity is a renewable i.e. a non-
conventional source of electricity and requires
little or no maintenance. Therefore, it can be
recommended to be in offices, laboratory, school
and even better in the residential places. In the
course of making this work different from the past
student’s project making things improved.

19. THANK YOU FOR
LISTENING
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