(For USM Staff/Student Only)

EngLib USM > Ω School of Electrical & Electronic Engineering >

Efficiency analysis of solar based charger

Efficiency analysis of solar based charger / Siti Atiqah Abd Halim
Kuasa solar adalah salah satu pilihan tenaga lestari yang terbaik untuk keperluan dunia pada masa hadapan. Pada masa kini, banyak teknologi telah dicipta berdasarkan kuasa solar dan salah satu daripadanya adalah pengecas solar. Dalam projek ini, analisis kecekapan dan prestasi pengecas berasaskan solar telah dikaji. Pengecas ini boleh digunakan apabila terdapat kehadiran cahaya matahari untuk mengecas peranti kecil. Dalam projek ini, prestasi set pengecas solar yang telah dikomersialkan dianalisis berdasarkan masa mengecas mereka. Beban yang sama iaitu telefon bimbit Samsung S2 digunakan untuk menguji pengecas solar ini. Kemudian, litar pengecas solar direka semula untuk mengesahkan kecekapannya. Eksperimen ini dijalankan berdasarkan beberapa faktor yang memberi kesan kepada prestasi panel solar seperti saiz panel solar dan sudut kecondongan panel solar. Sistem pengecas solar ini terdiri daripada litar pengatur yang meggunakan LM2574 sebagai komponennya. IC ini boleh berfungsi sebagai pengatur voltan AT turun (buck). Pertama, eksperimen dijalankan untuk memilih panel solar yang terbaik untuk sistem pengecas solar ini. Panel solar yang berlainan saiz 3W, 5W dan 10W digunakan. Kemudian, panel solar yang memberikan prestasi yang terbaik dipilih dan ia diletakkan dalam dua kedudukan berbeza iaitu kedudukan mendatar dan juga dengan sudut kecondongan 30°. Berdasarkan keputusan yang diperolehi, sistem pengecas solar yang terbaik adalah yang menggunakan 10W panel solar dengan 30° sudut kecondongan. Litar pengecas solar ini mampu mengawal voltan keluaran untuk mengecas telefon daripada 4.40V sehingga 4.75V. Kecekapan purata pengecas solar ini adalah dalam lingkungan 59.13% kepada 60.73%. Peningkatan purata peratusan bateri untuk litar pengecas solar ini adalah 13% dalam satu jam manakala pengecas komersial yang menggunakan 5W panel solar hanya menunjukkan 10% kenaikan bateri dalam 1 jam. Litar pengecas solar yang direka semula dalam projek ini dapat memendekkan masa pengecasan telefon bimbit kira-kira 2-3 jam kurang daripada pengecas solar yang sedia ada di pasaran. _______________________________________________________________________________________________________ Solar power is one of the best options for the sustainable energy requirements of the world. Nowadays, many technologies have been invented based on the solar power and one of them is solar charger. In this project, the efficiency analysis and performance of solar based charger is investigated. This charger can be used whenever there is presence of sunlight to charge small devices. In this report, the performance of the commercialized solar charger set is being analysed based on their charging time. The same load is used for testing the solar charger which is Samsung S2 mobile phone. Then, solar charger circuit is redesigned in order to verify its efficiency. The experiment is conducted based on several factors that affect the performance of the solar panel like size of solar panel and tilt angle of solar panel. This solar charger system consists of regulator circuit that used LM2574 as its components. This IC can provide the function as a step-down (buck) voltage regulator. Firstly, the experiment is conducted to choose the best solar panel for this solar charger system. Different sizes of solar panels, 3W, 5W and 10W are used. Then, solar panel that gives the best performance is chosen and it is placed in two different positions which are horizontal position and also with a tilt angle 30°. Based on the result obtained, the best solar charger system is the one that use 10W solar panel with 30° tilt angle. This solar charger circuit is able to regulate the output voltage for charging the phone from 4.40V up to 4.75V. The average efficiency of this solar charger is in the range of 59.13% to 60.73%. The average increase in battery percentage for this solar charger circuit is 13% in one hour while the commercialized charger that used 5W solar panel only shows 10% battery increment in 1 hour. The redesigned circuit of solar charger in this project is able to shorten the charging time of mobile phone about 2 to 3 hours lesser than the existing solar charger in the market.
Contributor(s):
Siti Atiqah Abd Halim - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875008012
Language:
English
Subject Keywords:
Solar; sustainable; performance
First presented to the public:
6/1/2015
Original Publication Date:
3/21/2019
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 92
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2019-03-21 17:39:31.897
Submitter:
Mohd Jasnizam Mohd Salleh

All Versions

Thumbnail Name Version Created Date
Efficiency analysis of solar based charger1 2019-03-21 17:39:31.897