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A Modified Boost-Boost High Gain DC-DC Converter for Photovoltaic (PV) Based Off Grid Applications

H. Isah, Y. M. Sagagi and A. Bako.




Abstract

This paper presents a single switch non-isolated DC-DC converter good for photovoltaic (PV) applications. The proposed topology was constructed using two classical DC-DC boost converters by arranging them in cascade for providing high voltage gain, low duty-cycle, less stress across the semiconductor devices, less size, and low cost. The operating principle and steady-state analysis of an individual components of the proposed topology in continuous conduction mode (CCM) are discussed and presented in detail and the results obtained improved the ones in literatures. The prototype of 120 V DC output voltage with 9 V DC input voltage is implemented for validation of the presented converter.

Key words: DC-DC converter, Photovoltaic (PV), Single switch, High gain, Low Duty-cycle.






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