Improved MPPT control for single-phase grid-connected PV system

2021 ◽  
Vol 12 (1) ◽  
pp. 1
Author(s):  
Mahmoud Ahmed Salem ◽  
Yousry Abdel Gawad Atia ◽  
Osama Mohamed Arafa
Keyword(s):  
Single Phase ◽  
Pv System

Feed‐forward DC‐bus control loop applied to a single‐phase grid‐connected PV system operating with PSO‐based MPPT technique and active power‐line conditioning

2016 ◽  
Vol 11 (1) ◽  
pp. 183-193 ◽  
Author(s):  
Sérgio Augusto OLiveira da Silva ◽  
Leonardo Poltronieri Sampaio ◽  
Fernando Marcos de Oliveira ◽  
Fábio Renan Durand
Keyword(s):  
Single Phase ◽  
Power Line ◽  
Active Power ◽  
Control Loop ◽  
Pv System ◽  
Feed Forward ◽  
Dc Bus ◽  
System Operating

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

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4796 ◽  
Author(s):  
Eyad Radwan ◽  
Mutasim Nour ◽  
Emad Awada ◽  
Ali Baniyounes
Keyword(s):  
Fuzzy Logic ◽  
Output Power ◽  
Single Phase ◽  
Reactive Power ◽  
Low Voltage ◽  
Operating Conditions ◽  
Pv System ◽  
Utilization Factor ◽  
Low Voltage Ride Through ◽  
Active And Reactive Power

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.

Single-Phase Grid-Connected PV System Island Effect Detection Based on Active Output Power Change Method

2014 ◽  
Vol 1008-1009 ◽  
pp. 399-403 ◽  
Author(s):  
Ke Li ◽  
De An Zhao
Keyword(s):  
Output Power ◽  
Single Phase ◽  
Output Energy ◽  
Pv System ◽  
Advantages And Disadvantages ◽  
Island Effect ◽  
Power Change ◽  
Active Detection

In order to solve the islanding effect of single phase photovoltaic grid-connected system, by introducing some common passive and active detection, and generalizing the advantages and disadvantages of the two detections, we came up with and design an output energy changing method to achieve the detection and prevention of the islanding effect. Modeling and simulating this system under MATLAB , and the results show that the output energy changing method can detect the generation of islanding effect accurately, and achieve the anti-islanding effect effectively.

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