Assessment of isolated and non-isolated DC-DC converters for medium-voltage PV applications
Author | Alassi A. |
Author | Al-Aswad A. |
Author | Gastli A. |
Author | Brahim L.B. |
Author | Massoud A. |
Available date | 2020-03-18T08:10:06Z |
Publication Date | 2018 |
Publication Name | 2017 9th IEEE-GCC Conference and Exhibition, GCCCE 2017 |
Resource | Scopus |
Abstract | The potential of Photovoltaic (PV) panels as a main tool of harnessing solar energy is increasing with the advancements in their power conditioning and conversion stages that vary based on applications. This paper focuses on the conversion of a 22kW PV array output from low-voltage to medium-voltage level (400V to 7kV). This high voltage conversion ratio is difficult to achieve using conventional single-stage DC-DC converters. Thus, different alternatives are proposed and compared here, namely, the Parallel-Input Series-Output (PISO) connection of two different stages using both isolated (full-bridge) and non-isolated DC-DC converters. The converters are compared on the basis of efficiency, footprint, components rating and reliability. Thus, the isolated DC-DC converter system efficiency was estimated at 797%, compared to 93 % for the non-isolated system, keeping into account the variations in terms of the filtering capacitor requirements to maintain a constant minimal voltage ripple at the output which is in favor of the non-isolated systems. ? 2017 IEEE. |
Sponsor | ACKNOWLEDGMENT This publication was made possible by the National Priority Research Program (NPRP) award [NPRP6-244-2-103] from the Qatar National Research Fund (QNRF); a member of the Qatar Foundation. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of QNRF. |
Language | en |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Subject | DC-DC Converters Full-Bridge Converter Isolated MATLAB/Simulink Non-Isolated PSIM Zeta Converter |
Type | Conference Paper |
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Electrical Engineering [2611 items ]