Simulation for Optimal Battery Charging in Solar-Powered Vehicle

Team Members:

R.Balaji 100107144003V.Praveen Kumar 100107144031C.Purushothaman 110407144019A.Stephen Raj 110407144027

Guided by,

Prof .A.Vidhyasekar M.E., AP/ECE

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Outline • Objective• Introduction• Literature survey• Existing method• Our new proposal• Simulation results• Flowchart• Coding• Applications• Schedule

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Objective

• The design and construction of an charging system for lead acid batteries by means of tracking solar panel.

• Our proposal makes a twofold significant contribution.

• It presents the construction of a solar tracking mechanism aimed at increasing the rover’s power regardless of its mobility.

• It proposes an alternative design of power system performance based on a pack of two batteries.

• The aim is completing the process of charging a battery independently while the other battery provides all the energy consumed by the vehicle.

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Introduction

• What is Solar Panel?

• How does solar panel works?

• What is the purpose of battery?

• How did it works effectively here?

Literature survey

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TITLE PUBLICATION

YEAR MERITS DEMERITS

Smart Host Microcontroller for Optimal Battery Charging in a Solar-Powered Robotic Vehicle.

IEEE 2013 Efficiency, durability.

High Cost, more Power Consumption.

Battery Management System: An Overview of Its Application in the Smart Grid and Electric Vehicles.

IEEE 2013 Highly reliable, low cost.

Low accuracy, needs more power.

Two Ways of Rotating Freedom Solar Tracker by Using ADC of Microcontroller

Global Journal US.

2012 Low of cost, improved electrical power.

Not suitable for all the climatic conditions.

A maximum power point tracking system with parallel connection for PV stand-alone applications

IEEE 2008 MPPT technology, reduces the negative influence of power converter losses.

Battery usage is limited.

Development of a microcontroller-based, photovoltaic maximum power point tracking control system

IEEE 2001 MPPT technology, low of cost.

Minimum battery usage.

Existing method

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Our New Proposal

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Solar Panel with

Actuator

RF Receiver

Decoder

Battery 1

Signal Conditionin

g

Left Motor Right Motor

Motor Driver

LCDMicrocontrollerBattery Selection Logic

Battery 2

Block Diagram of optimal battery charging solar device

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Simulation Block Interfacing Stepper Motor

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START

GET LEFT, CENTER, RIGHT VOLTAGES

GET LEFT, CENTER, RIGHT VOLTAGES

CENTER >

RIGHT

LEFT< 

CENTER

LEFT> 

RIGHT

MOTOR ROTATESTO LEFT POSITION

END

MOTOR ROTATES TO RIGHT POSITION

MOTOR ROTATES TO CENTER

Flow Chart for Solar Panel Tilting

YESNO

NOYES

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Working Methodology

• Each module is rated by its DC output power under standard 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.

• This robot is equipped with 2 batteries. The robot switches to the battery which has more charge. In this time the other battery starts charging via solar panel. This intelligence can be achieved by the use of a microcontroller.

Efficiency calculation

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Where Voc is the open-circuit voltage;where Isc is the short-circuit current; andwhere FF is the fill factorwhere η is the efficiency.

Continue…

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Atmel Coding For Solar Tracking Mechanism

#define F_CPU 16000000UL#include<avr/io.h>#include"avr_lcd.h"#include "avr_adc.h"

int main(){DDRC=0b00000011;PORTC=0b00000000;int x,y,z;lcd_init();adc_init();lcd_putsxy(2,"OPTIMUM SOLAR");lcd_putsxy(64,"CHARGING VEHICLE");_delay_ms(100);x=adc_read(0);y=adc_read(1);z=adc_read(2);

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if((x>y) && (x>z)){lcd_clear();lcd_putsxy(0,"Left");PORTC=0b00000010;}

else if((y>x) && (y>z)){lcd_clear();lcd_putsxy(0,"Center");}

else{lcd_clear();lcd_putsxy(0,"Right");PORTC=0b00000001;}}

Continue…

Advantage & Applications

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•Improvement in rovers mobility.

•Used largely in unmanned vehicle in war field.

•Can be implemented in any kind of solar devices.

•Using two battery brings durability.

•Large withstanding capability.

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Simulation Results

Simulation coding page

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Layout for battery switching

Layout Design For Battery Switching

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Conclusions And Future Work

• The interest of this robotic system lies in the design concept of solar tracking and battery switching mechanism.

• On this basis, our proposal presents the construction of a solar tracking mechanism aimed at increasing the rover’s power regardless of its mobility.

• The aim is completing the process of controlling the robot in the availability of solar power.

• The future work concentrates in hardware design built with compact weight and with more efficient power consumption for the rover’s continuous motion.

Schedule

• September Preparation of module’s coding.

• October Simulation for solar tracking mechanism

• November Layout design for battery switching

• December Completion for phase 1

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QUERIES...?

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THANK YOU....