Modification of an Uninterruptible Power Supply (UPS) for an Extended Running Time

Ogunrinde M. A, Adewole S. M., Abdulsalami B. A.


Uninterruptible Power Supply (UPS) is increasingly becoming popular as a means of providing conditioned and uninterrupted power supply to sensitive and non-sensitive loads at critical and non-critical times.Sensitive modern equipment with very low tolerance for power fluctuation and failures are on the increase due to advancement in science and technology, theseequipment however require power backed up if they are to perform optimally. This study focuses on modification of the UPS in order to extend its running time.A used and dumped UPS working at a back-up time of between 0 to 10mins was modified to accommodate two, 75AH Lead acid batteries, using 1400VA Zinox UPS. An extended backup time of between 2hrs to 8hrs on the same UPS using Lead Acid/Deep Cycle batteries was achieved which at the same time operating within a very low budget.

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Albu & Popenţiu (2011).High reliability single-phase uninterruptible power supply. Journal of Electrical and Electronics Engineering Research Vol. 3(2), pg 18- 20, retrieved on February 15, 2017. http://www.academic ISSN 2141-2367©2 011 Academic Journals.

Average Joe’s Guide to Uninterruptible Power Supply: Retrieved on January 15, 2017 from, http://

Benjamin. E (2014, August 11). Update – Privatization Issues, Retrieved on February 22, 2017, from Council-on- Power/UPDATE-ON- PRIVATISATION- ISSUES.

Edmund Conway, (2003). World’s biggest battery switched on in Alaska, 28 Aug. Retrieved on February17 technology/world biggest -battery- switched-on-in- Alaska.html.

Legrand: A guide to choosing your UPS, page 4-5, (2012).

Michael B. (2016, August 27) Behold: World’s Largest Battery. Motherboard. Retrieved on February 23, 2017 from, largest-battery.

Muhammad Aamir, Kafeel Ahmed Kalwar, and Saad Mekhilef (2016)Review: Uninterruptible Power Supply. Elsevier: Renewable and Sustainable Energy Reviews volume 58, 1395 – 1410

Peter M. Curtis (2011). Maintaining Mission Critical Systems in a 24/7 Environment pp. 261–262. ISBN 9781118041628.

Power stream: Lead acid battery charging basics and charger, retrieved on January 20, 2017. http://power

Power supplies in telecommunications: Editura de Vest, Timisoara, pp. 23-79. Popescu .V (2004).

S. Ko and S. Lee, "A Parallel Processing Uninterruptible Power Supply for Sudden Voltage Fluctuation for Power Management," Engineering, Vol. 5 No. 1B, 2013, pp. 1-3. doi: 0.4236/eng. 2013.51B003.

Folorunso Oladipo and Olowu Temitayo. The Nigerian Power System Till Date: A review, International Journal of Advance Foundation and Research in Science & Engineering (IJAFRSE) Volume 1, Issue 5, October 2014.retrieved February 21, 2017,

Today in Energy. (June 29,2012) .Electricity storage: Location and cost- battery storage for transmission support in Alaska. Retrieved June 29, 2017 from, 10#tabs_ElecStorage-5.

Uwe Schmidt (1995) PHD Thesis on Uninterruptible Power Supply using a dual Quasi-resonant mode. Vicvelcro: UPS-extended run time, Retrieved December 27, 2016 http://www.instructables.Com.

Whole solar: Types of batteries,, Types of batteries.

Wikipedia: Uninterruptible power supply, retrieved from Wikipedia page 2-3, March (2009).

Wikipedia: Deep cycle battery, retrieved on January 7,2017 from http://www.en.wikipedia/wiki/Deep- cycle-battery.



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