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SERIES CONNECTED FORWARD FLY-BACK CONVERTOR FOR HIGH STEP UP POWER CONVERSION
Chitralekha Vangala, Dr. S. R. Deore

Published in: International Journal of Current Engineering And Scientific Research ( IJCESR)
Volume- 4, Issue-8, pp.65-74, Aug 2017
DPI :-> 16.10046.IJCESR.2017.V4I8.6574.1869



Abstract
Global energy consumption is tending to grow continuously. To satisfy the demand and supply of electric power against the background of depletion of the conventional, fossil fuel resources, such as the renewable energy sources are becoming more useful and popular. According to the researchers despite of its fluctuating nature and weather dependency, the capacity of renewable resources can be used to satisfy the overall need of global demand for energy. Recently, highly-distributed photovoltaic sources have been used for obtaining high generation efficiency even when it is under partial shading conditions severely. However, power conditioning systems for sources needs high step-up voltage boost due to the low output of generating sources. This paper proposes the scheme of high step up topology which employs a Series-connected ForwardFlyBack (SFFB) converter, in which output connected in series is used to obtain high boost in the voltage-transfer gain. SFFB is a hybrid type of forward as well as flyback converter, sharing the secondary of the transformer for increasing the utility of the transformer. By stacking the outputs of the secondary winding, extremely high voltage gain is obtained with small size and high efficiency even with an isolation. The voltage stress is reduced by separating the secondary of the transformer having low turn ratio which leads to greater efficiency. As we have a single-ended scheme, it becomes beneficial to the cost competitiveness. In this paper, the principle of operation and designing of the proposed scheme are shown, along with the hardware prototype model and analytical comparison. A 100 W resistive bulb is used in the SFFB DC/DC converter prototype which has been implemented for the experimental verification of proposed converter topology.

Key-Words / Index Term
SFFB converter, Photovoltaic system, PWM technique, Multisim.

How to cite this article
Chitralekha Vangala, Dr. S. R. Deore , “SERIES CONNECTED FORWARD FLY-BACK CONVERTOR FOR HIGH STEP UP POWER CONVERSION”, International Journal of Current Engineering And Scientific Research ( IJCESR), 4, Issue-8, pp.65-74, Aug 2017. DPI:16.10046.IJCESR.V4.I8.1869