GENERALIZED TOPOLOGIES, PERFORMANCE AND EFFICIENCY COMPARISON OF THE HIGH STEP-UP NON-ISOLATED STACKED COUPLED INDUCTOR DC-DC BOOST CONVERTERS

Koç Y.

EJONS 16th INTERNATIONAL CONFERENCE ON MATHEMATICS, ENGINEERING, NATURAL & MEDICAL SCIENCES, İstanbul, Türkiye, 11 - 13 Kasım 2023, ss.22

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.22
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

To increase the utility of renewable energy sources in electrical energy production, low-cost 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 as a renewable energy source, due to the shadow effect and module incompatibility. In renewable energy systems with the low output voltage and the high output current, there is a need to use DC-DC converters with a high voltage gain to obtain the desired voltage of the grid system through inverters. Conventional boost converter has a low efficiency and performance in the high stepup applications due to its wide duty cycle range. Therefore, in order to obtain a high output voltage, a many DC-DC step-up converters with high voltage gain have been designed in the literature. There are many proposed topologies in the literature for non-isolated DC-DC converters with high voltage gain due to their high performance for use in renewable energy sources. In this study, high step-up non-isolated stacked coupled inductor DC-DC boost converters are discussed. The coupled inductor boost converters and their derived topologies have become more remarkable than the others due to their advantages such as; a high voltage conversion ratio is achieved with fewer components, some designed coupled inductor network structures, such as active switched coupled inductor network and reverse coupled inductor network can be included in the input section of the converter, by integrating a boost converter with a single switching component, a low input current ripple and a quadratic feature can be achieved. In this study, the generalized topologies of these converter were derived and categorized. For each category, generalized topologies were evaluated in terms of performance and efficiency. By taking care a photovoltaic (PV) system example, the efficiency comparison under the same standards was estimated using the simulation data and the values of the components data of the manufacturer.