URI | http://purl.tuc.gr/dl/dias/A9C665A0-31DE-4AD5-9FAC-FA2F4A7529D2 | - |
Identifier | https://ieeexplore.ieee.org/document/9907343 | - |
Language | en | - |
Extent | 10 pages | en |
Title | Evaluation of common-mode leakage current of Aalborg-type transformerless PV inverters | en |
Creator | Orfanoudakis, G. I | en |
Creator | Koutroulis Eftychios | en |
Creator | Κουτρουλης Ευτυχιος | el |
Creator | Foteinopoulos Georgios | en |
Creator | Φωτεινοπουλος Γεωργιος | el |
Creator | Wu Weimin | en |
Publisher | Institute of Electrical and Electronics Engineers | en |
Description | This work was performed within the framework of the project “eSOLAR: Principle and control of high-efficiency Buck-Boost type Photovoltaic inverter” of the program “Bilateral and Multilateral Research & Technology Co-operation between Greece and China”, funded in Greece by the Operational Program “Competitiveness, Entrepreneurship and Innovation 2014-2020” (co-funded by the European Regional Development Fund) and managed by the General Secretariat of Research and
Technology, Ministry of Education, Research, and Religious Affairs under the project
eSOLAR/T7ΔKI-00066. | en |
Content Summary | Single-phase transformerless photovoltaic (PV) inverters with voltage step-up capability are widely employed for integrating PV generation to the electric grid. Transformerless PV inverter topologies include special features to suppress common-mode (CM) leakage currents that can flow through parasitic capacitances that appear between the PV array and the ground. The Aalborg inverter belongs to the family of dual-mode time-sharing PV inverters, in which a voltage step-up (Boost) stage operates alternatively to a step-down (Buck) stage to create a rectified sine wave DC-link voltage, which is then unfolded to the grid. This paper analyses, quantifies and improves CM leakage current generation for Aalborg-type transformerless PV inverters. It highlights the factors that can lead to high peak and RMS values of leakage current for these topologies and proposes an output filter modification to reduce them by up to 70%. The analytical results are supported by simulation in MATLAB-Simulink and are applicable to other topologies with rectified sine wave DC-link voltages. | en |
Type of Item | Πλήρης Δημοσίευση σε Συνέδριο | el |
Type of Item | Conference Full Paper | en |
License | http://creativecommons.org/licenses/by/4.0/ | en |
Date of Item | 2024-12-19 | - |
Date of Publication | 2022 | - |
Subject | Grid-connected inverter | en |
Subject | Transformerless PV inverter | en |
Subject | Dual-mode time-sharing inverter | en |
Subject | Buck in Buck, Boost in Boost inverter | en |
Subject | Step-up inverter | en |
Subject | Rectified sine wave DC-link voltage | en |
Subject | Aalborg inverter | en |
Subject | Common-mode current | en |
Subject | Ground leakage current | en |
Bibliographic Citation | G. I. Orfanoudakis, E. Koutroulis, G. Foteinopoulos and W. Wu, "Evaluation of common-mode leakage current of Aalborg-type transformerless PV inverters," in Proceedings of the 24th European Conference on Power Electronics and Applications (EPE 2022 ECCE Europe), Hanover, Germany, 2022. | en |