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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, Ariffuddin Development of on-line single phase uninterruptible power supply (UPS) for low power application. In: International Seminar on the Application of Science & Mathematics 2011, 1 - 3 November 2011, Putra World Trade Centre, KL, Malaysia.

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Uninterruptible Power Supply (UPS) is an electrical apparatus that provides emergency power to a load when the input power source (from main utility) fails to deliver electric power. The purpose of this paper is to show development of an on-line mode single phase UPS that suitable for 240 V (AC), 50 Hz type of electrical appliances, especially 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 from normal to backup modes. The design consists of battery charger1 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 (AC), 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 power supply; inverter; rectifier; single phase ups; online mode UPS
Subjects: T Technology > T Technology (General)
Depositing User: Normajihan Abd. Rahman
Date Deposited: 13 Aug 2018 03:41
Last Modified: 13 Aug 2018 03:41
URI: http://eprints.uthm.edu.my/id/eprint/7944
Statistic Details: View Download Statistic

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