Fuzzy Logic Control for Low-Voltage Ride-Through Single-Phase Grid-Connected PV Inverter

Eyad Radwan, Mutasim Nour, Emad Awada and Ali Baniyounes
Additional contact information
Eyad Radwan: Department of Electrical Engineering, Faculty of Engineering, Applied Science Private University, Amman 11931, Jordan
Mutasim Nour: School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK
Emad Awada: Department of Electrical Engineering, Faculty of Engineering, Applied Science Private University, Amman 11931, Jordan
Ali Baniyounes: Department of Electrical Engineering, Faculty of Engineering, Applied Science Private University, Amman 11931, Jordan

Energies, 2019, vol. 12, issue 24, 1-19

Abstract: This paper presents a control scheme for a photovoltaic (PV) system that uses a single-phase grid-connected inverter with low-voltage ride-through (LVRT) capability. In this scheme, two PI regulators are used to adjust the power angle and voltage modulation index of the inverter; therefore, controlling the inverter’s active and reactive output power, respectively. A fuzzy logic controller (FLC) is also implemented to manage the inverter’s operation during the LVRT operation. The FLC adjusts (or de-rates) the inverter’s reference active and reactive power commands based on the grid voltage sag and the power available from the PV system. Therefore, the inverter operation has been divided into two modes: (i) Maximum power point tracking (MPPT) during the normal operating conditions of the grid, and (ii) LVRT support when the grid is operating under faulty conditions. In the LVRT mode, the de-rating of the inverter active output power allows for injection of some reactive power, hence providing voltage support to the grid and enhancing the utilization factor of the inverter’s capacity. The proposed system was modelled and simulated using MATLAB Simulink. The simulation results showed good system performance in response to changes in reference power command, and in adjusting the amount of active and reactive power injected into the grid.

Keywords: grid-connected inverter; fuzzy logic control; low-voltage ride-through; photovoltaic system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/24/4796/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/24/4796/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:24:p:4796-:d:298633

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().