A new control strategy for low-voltage ride-through of three-phase grid-connected PV systems
| Autor: | Hao Wen, Meghdad Fazeli |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
distributed power generation
power grids maximum power point trackers power supply quality photovoltaic power systems power generation control invertors power convertors control strategy low-voltage ride-through three-phase grid-connected pv systems current limitation important aspects grid-connected power converters distributed energy resources fault management strategy microgrids applications 3-phase grid-connected photovoltaic systems positive sequence components negative sequence components symmetrical faults unsymmetrical faults reactive power support Engineering (General). Civil engineering (General) TA1-2040 |
| Zdroj: | The Journal of Engineering (2019) |
| Druh dokumentu: | article |
| ISSN: | 2051-3305 48199044 |
| DOI: | 10.1049/joe.2018.9254 |
| Popis: | Power quality and current limitation are the most important aspects of the grid-connected power converters under fault. Since the distributed energy resources are widely used, fault management strategy is important for micro-grids applications. This paper presents a new control strategy for low-voltage ride-through for 3-phase grid-connected photovoltaic systems. The proposed method, which is designed in a synchronous frame using positive and negative sequence components, can protect the inverter from overcurrent failure under both symmetrical and unsymmetrical faults and provides reactive power support. The method does not require a hard switch to switch from MPPT to a non-MPPT algorithm, which ensures a smooth transition. |
| Databáze: | Directory of Open Access Journals |
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