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Novel LCL filter for non-isolated photovoltaic inverters with CM current trapping capability for weak grids

المؤلفKhan, A.
المؤلفKhan, Ahmad
المؤلفIqbal, Atif
المؤلفShadmand, Mohammad B.
تاريخ الإتاحة2019-09-09T07:50:58Z
تاريخ النشر2018-12-26
اسم المنشورProceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society
المعرّفhttp://dx.doi.org/10.1109/IECON.2018.8591076
الترقيم الدولي الموحد للكتاب 9781509066841
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85061546408&origin=inward
معرّف المصادر الموحدhttp://hdl.handle.net/10576/11805
الملخص© 2018 IEEE. In this work, a novel LCL filter topology for non-isolated Photovoltaic (PV) applications is developed. This topology has the ability to trap the High-Frequency (HF) Common Mode (CM) current inside the PV inverter. Consequently, suppressing the ground leakage current. Furthermore, the proposed solution is immune to ground leakage current resonance issues (i.e. effective for applications where the utility grid is characterized as a weak grid). Moreover, the theoretical analyses were validated on a 10 kW grid-connected PV system. The results demonstrated that at resonance conditions, the proposed system reduced the leakage current root-mean-square (RMS) value from 1 A to 25 mA. Thus, satisfying the VDE standard's leakage current limit.
راعي المشروعThis publication was made possible by NPRP grant # [X-033-2-007] from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors.
اللغةen
الناشرIEEE
الموضوعGrid-Connected
Ground leakage current
LCL filter
Non-isolated
Photovoltaic (PV)
Transformer-less
العنوانNovel LCL filter for non-isolated photovoltaic inverters with CM current trapping capability for weak grids
النوعConference Paper


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