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Development of on line single phase uninterruptible power supply (UPS) for low power application

Ponniran, Asmarashid and Zulkifly, Normalyiana and Joret, Arriffudin (2011) Development of on line single phase uninterruptible power supply (UPS) for low power application. In: International Seminar on the Application of Science and Mathematics 2011, 1 - 3 November 2011, Putra World Trade Centre, Kuala Lumpur.


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Uninterruptible Power Supply (UPS) is an electrical apparatus that provides emergency power to a load when the input power source (fro m main utility) fails to deliver electric power. The purpose of this paper is to show development of an o n-line mode single phase UPS that suitable for 240 V (A C), 50 Hz type of electrical appliances, esp ecially for personal computers or low power electrical appliances. The advantage of the online mode of UPS is there is no transfer time during the transition fro m normal to backup modes. The design consists of battery charger/ rectifier module, inverter module and battery. One of the important components used is IC NE555 and the function is to generate pulses and control the frequency of inverter. Proteus 7.1 SP2 software is used to simulate the designed circuits. The UPS is developed with output specification, 240 V (A C), 50 Hz. The developed UPS has been tested on a personal computer and successfully provides backup power up to 400 W for about 15 minutes. Therefore, the developed UPS is able to provide temporary backup electric power for critical electrical appliances when outage condition occurs.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Uninterruptible Po wer Supply, Inverter, Rectifier, Sing le Phase UPS, On - line mode UPS.
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK4001-4102 Applications of electric power
Divisions: Faculty of Electrical and Electronic Engineering > Department of Electrical Power Engineering
Depositing User: M.Iqbal Zainal A
Date Deposited: 20 Feb 2012 08:33
Last Modified: 20 Feb 2012 08:33
URI: http://eprints.uthm.edu.my/id/eprint/2369
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