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Isolated DC-DC UPS Based in a Fly back Converter Analysis and Design
Raju U. Bhabhor1, Jitendrakumar Amrutlal Jadav2, Rinal K. Ahir3

1Prof. Raju Bhabhor, Professor, Department of Electrical Engineering, Government Engineering college, Valsad (Gujarat), India.
2Jitendrakumar A. Jadav, Professor, Department of Electrical Engineering, Government Engineering college, Valsad (Gujarat), India.
3Rinal K. Ahir, Professor, Department of Electrical Engineering, Government Engineering college, Valsad (Gujarat), India.

Manuscript received on 21 September 2013 | Revised Manuscript received on 28 September 2013 | Manuscript published on 30 September 2013 | PP: 160-163 | Volume-2 Issue-4, September 2013 | Retrieval Number: D0820092413/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This paper presents the analysis, design and simulation from a simple DC-UPS converter with integrated back-up and automatic transition. This converter makes automatic transition between the main AC and the battery when a failure occurs, and it delivers uninterrupted DC power to the load through two independent power sources of commercial input power and battery power. The converter has the following characteristics: automatic transition between the main and the battery, no additional control to detect failure in the main, single structure, galvanic isolation, multi output voltages capability and only one switch control for two operation modes normal and back-up. The analysis, design, simulation and experimental results for this converter are presented
Keywords: Automatic Transition, Battery Charger, DC-DC Converter.

Scope of the Article: Predictive Analysis