automatic solar tracking system
DESCRIPTION
AUTOMATIC SOLAR TRACKING SYSTEMTRANSCRIPT
“AUTOMATIC SOLAR ENERGY TRACKING SYSTEM”
PROJECT PRESENTATION
ON
PRESENTED BY:- ANUJ KUMAR ARVINDRA KUMAR RAM SWRAOOP
8TH SEMESTER2013-2014
SUBMITTED TO:- Er. BINDU JI GYANESHEr. GARIMA AGRAWAL
CONTENTS
1. Solar tracker2. Aim of the project3. Hardware used4. Block diagram5. Hardware description6. Power supply7. Microcontroller AT89S528. ULN20039. Advantages10.Disadvantages11.Application12.References
A solar tracker is a generic term used to describe devices that orient or align various payloads toward the sun.
Example for payloads are photovoltaic panels, reflectors, Collectors, lenses or other optical devices.
The system focuses on the optimization of the electric energy produced by photovoltaic cells through the development of a sun-tracking system.
SOLAR TRACKER
AIM OF THE PROJECT
To follow the sun from dawn, throughout the day, till evening and again from dawn next day.
The driver will have to position a photo-voltaic panel to the best angle of exposure to sunlight for collection of maximum solar energy.
HARDWARE USED
TRANSFORMER (230 – 12 V AC)VOLTAGE REGULATOR (LM 7805)MICROCONTROLLER(AT89S52)PUSH BUTTONSULN2003STEPPER MOTORLEDIN4007RESISTORSCAPACITORS
BLOCK DIAGRAM
Relay driver
HARDWARE DISCRIPTION1. 230 V AC 50 Hz 12V step down transformer
2. Using In4007 as Bridge rectifier
3. Capacitors Filter(470µf) 4. 5v Regulator
5. Relay
POWER SUPPLY
MICROCONTROLLER AT89S52• 8K Bytes of In-System Programmable
(ISP) Flash Memory
• 4.0V to 5.5V Operating Range
• Fully Static Operation: 0 Hz to 33 MHz
• Three-level Program Memory Lock
• 256 x 8-bit Internal RAM
• 32 Programmable I/O Lines
• Three 16-bit Timer/Counters
• Eight Interrupt Sources
• Full Duplex UART Serial Channel
• Interrupt Recovery from Power-down Mode
• Fast Programming Time
ULN2003
ULN is Relay driver application.The ULN2003 is a high voltage and high current
Darlington transistor arrays. It consists of seven NPN Darlington pairs that
features high-voltage output with common-cathode clamp diode for switching inductive loads.
The collector-current rating of a single Darlington pair is 500mA.
The Darlington pairs may be paralleled for higher current capability.
ADVANTAGESSolar tracking systems continually orient photovoltaic panels towards the sun and can help maximize your investment in your PV system.
One time investment, which provides higher efficiency & flexibility on dependency over other sources.
Tracking systems can help reducing emissions and can contribute against global warming.
Bulk implementations of tracking systems help reduced consumption of power by other sources.
It enhances the clean and emission free power production.
DISADVANTAGES
Initial investment is high on solar panels.
It’s a bit of difficult for servicing, as the tracking systems are not quite popular regionally.
Moving parts and gears which will require regular maintenance.
May require repair or replacement of broken parts over a long run.
APPLICATIONS
Can be used for small & medium scale power generations.
For power generation at remote places where power lines are not accessible.
For domestic backup power systems.
REFERENCES
http://www.engineersgarage.com/electronic-components/uln2003-datasheethttp://wiki.answers.com/Q/What_is_difference_between_microcontroller_8051_and_'AT89S52http://en.wikipedia.org/wiki/ULN2003A
THANK YOU