Akademik Veri Yönetim Sistemi
6. INTERNATIONAL MARMARA SCIENTIFIC RESEARCH AND INNOVATION CONGRESS, İstanbul, Türkiye, 7 - 08 Ekim 2023, ss.709-721
To increase the utilization of renewable energy sources in electrical energy production, lowcost DC-DC converters with high voltage gain and efficiency are used as an interface. The
desired output voltage cannot be obtained with the series-connected form of solar panels,
which are renewable energy sources, due to the shadow effect and module incompatibility. In
renewable energy systems with low output voltage and high output current, the use of high
voltage gain DC-DC converters is needed to obtain the desired voltage of the grid system
through inverters. Conventional boost converter has low efficiency and performance in high
voltage applications due to its high duty cycle range. Therefore, in order to obtain high output
voltage, many high step-ep DC-DC converters have been designed in the literature. There are
many proposed non-isolated high step-up DC-DC converters in the literature due to their high
performance for use in renewable energy sources. In this study, converters designed without
using transformers or coupling inductors are discussed. Since there is no need for some design
restrictions regarding the problems arising from parasitic inductors of DC-DC converters
without transformers and coupling inductors with high voltage gain, the use of current source
converters in renewable energy sources may be a reason for preference. The generalized
topologies of these topologies were derived and categorized. For each category, generalized
topologies were evaluated in terms of performance and efficiency. By taking care a PV
system instance, efficiency comparison under the same standards was made using simulation
data and values of the element data of the manufacturer companies.