A Grid-tied PV Inverter with Sag-severity-independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection

This paper proposes a grid-tied photovoltaic (PV) inverter capable of low-voltage ride through (LVRT), reactive power support, and islanding protection. Unlike other LVRT inverters, the proposed inverter is independent of sag severity while maintaining the maximum power-point tracking (MPPT) under n...

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Autores principales:	Muhammad Talha, Siti Rohani S. Raihan, Nasrudin Abd. Rahim
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Low-voltage ride through (LVRT) Sag maximum power point tracking (MPPT) single-phase photovoltaic (PV) inverter PV-battery system Production of electric energy or power. Powerplants. Central stations TK1001-1841 Renewable energy sources TJ807-830
Acceso en línea:	https://doaj.org/article/8f8e5d1925b344b08847c2e5f6c54552
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spelling	oai:doaj.org-article:8f8e5d1925b344b08847c2e5f6c545522021-11-30T00:00:22ZA Grid-tied PV Inverter with Sag-severity-independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection2196-542010.35833/MPCE.2021.000319https://doaj.org/article/8f8e5d1925b344b08847c2e5f6c545522021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9627871/https://doaj.org/toc/2196-5420This paper proposes a grid-tied photovoltaic (PV) inverter capable of low-voltage ride through (LVRT), reactive power support, and islanding protection. Unlike other LVRT inverters, the proposed inverter is independent of sag severity while maintaining the maximum power-point tracking (MPPT) under normal and faulty conditions. The addition of an energy storage buffer stage mitigates the DC-link voltage surge during sags. At the same time, the inverter injects the reactive power during back-to-back sags of variable depths. The control system of the inverter generates the appropriate reference signals for normal, LVRT, and anti-islanding modes while the MPPT continues running. The salient features of the proposed inverter are: (1) active power injection under normal grid conditions; (2) sag-depth independent LVRT with reactive power support; (3) no DC-link fluctuations; (4)continuous MPPT mode; and (5) simultaneous LVRT and anti-islanding support during a grid outage. The inverter demonstrates an uninterrupted operation and seamless transition between various operating modes. Simulations and the experimental prototype have been implemented to validate the efficacy of the proposed PV inverter.Muhammad TalhaSiti Rohani S. RaihanNasrudin Abd. RahimIEEEarticleLow-voltage ride through (LVRT)Sagmaximum power point tracking (MPPT)single-phase photovoltaic (PV) inverterPV-battery systemProduction of electric energy or power. Powerplants. Central stationsTK1001-1841Renewable energy sourcesTJ807-830ENJournal of Modern Power Systems and Clean Energy, Vol 9, Iss 6, Pp 1300-1311 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Low-voltage ride through (LVRT) Sag maximum power point tracking (MPPT) single-phase photovoltaic (PV) inverter PV-battery system Production of electric energy or power. Powerplants. Central stations TK1001-1841 Renewable energy sources TJ807-830
spellingShingle	Low-voltage ride through (LVRT) Sag maximum power point tracking (MPPT) single-phase photovoltaic (PV) inverter PV-battery system Production of electric energy or power. Powerplants. Central stations TK1001-1841 Renewable energy sources TJ807-830 Muhammad Talha Siti Rohani S. Raihan Nasrudin Abd. Rahim A Grid-tied PV Inverter with Sag-severity-independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection
description	This paper proposes a grid-tied photovoltaic (PV) inverter capable of low-voltage ride through (LVRT), reactive power support, and islanding protection. Unlike other LVRT inverters, the proposed inverter is independent of sag severity while maintaining the maximum power-point tracking (MPPT) under normal and faulty conditions. The addition of an energy storage buffer stage mitigates the DC-link voltage surge during sags. At the same time, the inverter injects the reactive power during back-to-back sags of variable depths. The control system of the inverter generates the appropriate reference signals for normal, LVRT, and anti-islanding modes while the MPPT continues running. The salient features of the proposed inverter are: (1) active power injection under normal grid conditions; (2) sag-depth independent LVRT with reactive power support; (3) no DC-link fluctuations; (4)continuous MPPT mode; and (5) simultaneous LVRT and anti-islanding support during a grid outage. The inverter demonstrates an uninterrupted operation and seamless transition between various operating modes. Simulations and the experimental prototype have been implemented to validate the efficacy of the proposed PV inverter.
format	article
author	Muhammad Talha Siti Rohani S. Raihan Nasrudin Abd. Rahim
author_facet	Muhammad Talha Siti Rohani S. Raihan Nasrudin Abd. Rahim
author_sort	Muhammad Talha
title	A Grid-tied PV Inverter with Sag-severity-independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection
title_short	A Grid-tied PV Inverter with Sag-severity-independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection
title_full	A Grid-tied PV Inverter with Sag-severity-independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection
title_fullStr	A Grid-tied PV Inverter with Sag-severity-independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection
title_full_unstemmed	A Grid-tied PV Inverter with Sag-severity-independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection
title_sort	grid-tied pv inverter with sag-severity-independent low-voltage ride through, reactive power support, and islanding protection
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/8f8e5d1925b344b08847c2e5f6c54552
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A Grid-tied PV Inverter with Sag-severity-independent Low-voltage Ride Through, Reactive Power Support, and Islanding Protection

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