Single converter solar high mast lighting system is a project to design and implement a stand-alone MIMO converter solar power high mast light. The main focus of this project is to determine the options that are available to replace grid-powered street lamps with a stand-alone system that has the reliability to work under the worst conditions. The system’s main circuit is a MIMO converter which is able to accommodate arbitrary number of sources and loads. The system consists of two inputs and outputs i.e. inputs as solar cell and power grid and outputs as battery and high mast light. It only employs a single inductor, which can reduce the complexity and cost of the system as well as simplify the current sensing. By sensing the inductor current and monitoring the switching signals of the switches, the input and output currents can be determined without employing additional current sensing circuitry.

1. BENFINA P.S. (46)
BESTIN S. NALPATT (30)
GIBIYA GEORGE (11)
HANNA ROSE THOMAS (54)
STEBIN MATHEW (43)
SINGLE CONVERTER SOLAR HIGH
MAST LIGHTING SYSTEM
PRESENTED BY,
GUIDED BY,
ANOOP V P
Assistant professor

2. CONTENTS
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 Introduction
 Objective
 Literature Review
 Problem Statement
 Project Description
 Hardware Details
Result and Discussion
Conclusion
 Reference
Single converter solar High mast lighting
system

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Single converter solar high mast lighting system is a project to design and
implement a standalone MIMO converter solar power high mast LED
light.
The system includes solar cells, high power light-emitting-diode (HP-
LED), single converter (MIMO) and a Lead-acid battery.
INTRODUCTION
Single converter solar High mast lighting
system

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INTRODUCTION (Continue……)
It consists of two inputs and two outputs, i.e. inputs as solar cell
and power grid and outputs as battery and high mast light.
It only employs a single inductor, which can reduce the
complexity and cost of the system as well as simplify the current
sensing.
 The generated solar power is used to charge the battery and then
it is discharged through the load.
Single converter solar High mast lighting system

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OBJECTIVES
 A multiple converter is replaced by a single MIMO converter.
 To replace grid powered street lamps with a stand-alone solar powered
system.
 Efficiency of the system is improved and maintenance cost can be
reduced.
Single converter solar High mast lighting system

6. LITERATURE REVEIW
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 Hamid Behjati and Ali Davoudi, “A Multiple-Input Multiple-Output DC-
DC Converter”, IEEE Transactions on Industry Applications, vol. 49, no. 3,
May/ June 2013.
 In the existing system we are using two types of street light controlling
methods.
Single converter solar High mast lighting syste

7. LITERATURE REVIEW (Continue….)
 One is LDR controlled street light and the other is using a buck converter
and boost converter to do the same.
 In current system the lights are either on or off with the help of manual
control or with the help of LDR.
PROPOSED SYSTEM
 The system consist of a single MIMO converter which operate on
different modes according to the given instructions. .
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Single converter solar High mast lighting
system

8. PROBLEM STATEMENT
 The main problem in high mast lighting system is the high utilization of
power grid. It is a huge loss for power grid. So by bringing the proposed
system the usage of power grid is reduced since multiple sources are
used in the system.
 Another Problem is the manual control of various modes. By bringing the
new system all the modes are automatically controlled.
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Single converter solar High mast lighting
system

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PROJECT DESCRIPTION
BLOCK DIAGRAM
Fig.no.1 Block diagram of single converter solar high mast lighting
system
Single converter solar High mast lighting
system

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MIMO CONVERTER
1) An arbitrary number of input dc sources and passive loads can be
accommodated.
2) It can operate in both continuous conduction mode (CCM) and DCM.
3) The input powers delivered by different dc sources can be individually
regulated; thus, power budgeting between input energy sources can be
accommodated.
4) It only employs a single inductor, which can reduce the complexity and cost
of the system as well as simplify the current sensing .
Single converter solar High mast lighting
system

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5) By sensing the inductor current and monitoring the switching signals
of the switches, the input and output currents can be determined
without employing additional current sensing circuitry.
6) The output voltages can be individually higher than the maximum
input voltage or lower than the minimum input voltage.
MIMO CONVERTER (Continue…..)
Single converter solar High mast lighting system

12. CIRCUIT DIAGRAM FOR MIMO CONVERTER
03-03-201812 Fig :2 :Proposed MIMO converter with series outputs
Single converter solar High mast lighting system

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CIRCUIT DIAGRAM
Fig.no.3 . Circuit diagram of single converter solar high mast lighting system
Single converter solar High mast lighting system

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Case 1 From Solar cell to Battery
Fig no.4. Inductor is charging from solar cell
Single converter solar High mast lighting system

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Case 1 From Solar cell to Battery (Continue…..)
Fig no.5. Inductor is discharging and battery is charging
Single converter solar High mast lighting system

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Case 2 From Battery To Light
Fig .no.6 From battery to light
Single converter solar High mast lighting syste

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Case 3 From Power grid To Light
Fig.no. 7 Inductor is charging from the power grid
Single converter solar High mast lighting
system

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Case 3 From Power grid To Light (Continue…..)
Fig. no. 8 Inductor is discharging and battery gets
charged
Single converter solar High mast lighting
system

19. PROJECT TECHNOLOGIES
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 The methodology used for the project is PWM control
 Here PWM control is used for three switches i.e. S1,S2,S3
 Microcontroller ATMEGA 328 is used to control different relays
,power mosfet and IGBT.

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SIMULATION RESULTS
Fig .no.9 Simulation diagram
Single converter solar High mast lighting
system

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CURRENT AND VOLTAGE WAVEFORMS OF SOLAR CELL
Fig. no.10. Simulation output of voltage and current waveforms of solar cell
voltage
current
Single converter solar High mast lighting sy

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CURRENT AND VOLTAGE WAVEFORM OF BATTERY
Fig.no.11 current and voltage waveform of battery
voltage
current
Single converter solar High mast
lighting system

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Fig.no.12. current and voltage waveform of KSEB
CURRENT AND VOLTAGE WAVEFORM OF KSEB
voltage
current
Single converter solar High mast lighting
system

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CURRENT AND VOLTAGE WAVEFORM OF LIGHT
Fig.no.13. current and waveform of light
voltage
current
Single converter solar High mast lighting
system

25. HARDWARE DETAILS
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Fig.no.14.Hardware model
Single converter solar High mast lighting sys

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COMPONENTS SPECIFICATION
TRANSFORMER 12V,5A
12V,1A
SOLAR CELL 6V,5W
OPTO-COUPLER TLP350
INDUCTOR 2mH
RELAY 12V
BATTERY 12V,1.3A
POWER MOSFET IRF840
TABLE 1: COMPONENTS USED
Single converter solar High mast lighting syst

27. ADVANTAGES
Less maintenance cost.
The lighting system controller has more efficiency.
Here we are using Only a single converter. So ,the size of the circuit less.
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DISADVANTAGES
 Difficult to design
The initial investment was more
Single converter solar High mast lighting system

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RESULT AND DISCUSSION
Single converter solar High mast lighting
system
Fig.no.15.single converter solar high mast lighting system

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Three modes of operations,
Mode 1: solar to battery
Mode 2: battery to light
Mode 3: power grid to light
are observed and verified.
RESULT AND DISCUSSION( continue..)

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CONCLUSION
The proposed single converter solar high mast lighting system
automatically controls the intensity of high mast light without any
human intervention.
The discussed system has used the most compact, simple and
robust modules like MIMO converter which can be implemented
easily in the present scenario.
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 we implemented the hardware of proposed system that
operates in the three different modes as discussed
above.
All these modes are controlled using microcontroller
ATMEGA 328.
Continue……
Single converter solar High mast lighting sys

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REFERANCE
Hamid Behjati and Ali Davoudi, “A Multiple-Input Multiple-Output DC-DC
Converter”, IEEE Transactions on Industry Applications, vol. 49, no. 3, May/
June 2013.
 B. G. Dobbs and P. L. Chapman, “A multiple-input dc-dc converter topology,”
IEEE Trans. Power Electron., vol. 1, no. 1, pp. 6–9, Mar. 2003.
A. Khaligh, J. Cao, and Y.-J. Lee, “A multiple-input dc–dc converter topology,”
IEEE Trans. Power Electron., vol. 24, no. 3, pp. 862–868, Mar. 2009.
Single converter solar High mast lighting syst

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