Recent advances in synchronization techniques for grid-tied PV system: A review

Gawhade, Pragya; Ojha, Amit

doi:10.1016/j.egyr.2021.09.006

Cited by 65 publications

(21 citation statements)

References 82 publications

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“…It transforms the DC current generated by the PV array into an alternating current (AC) network at fifty or sixty hertz. The PLL technique must then be used to guarantee the inverter and network voltages synchronization [18].…”

Section: Major Photovoltaic System Componentsmentioning

confidence: 99%

PI-based PLL and 24-sector control of a 3P-3L-NPC inverter for grid-tied PV system synchronization

Ammari¹,

Benaboud²,

Talea

2022

IJAPE

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This article addresses one of the most serious issues in electricity: frequency and voltage anomalies. Actually, because renewable energy production is intermittent, the frequency and voltage of electricity produced are unstable and dependent on weather conditions. This issue causes industrial processes to fail, affecting the quality of the electrical supply and having a massive economic impact. Power electronics inverters are designed to compensate for system fluctuations in solar power generation. However, measurement noise in the grid voltage desynchronizes the inverter and network signals. The authors propose using a phase-locked loop technique based on inverter period control and a network voltage observer to achieve such synchronization of grid-connected photovoltaic (PV) systems. In this work, the grid integration of the PV system is carried out through a three-phase three-level neutral point clamped inverter due to better current quality with fewer harmonics and lower stress voltage of the inverter's components when compared to two-level voltage source inverters. The method is successfully applied in a simulated case study and experimental results validate it.

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Section: Major Photovoltaic System Componentsmentioning

confidence: 99%

PI-based PLL and 24-sector control of a 3P-3L-NPC inverter for grid-tied PV system synchronization

Ammari¹,

Benaboud²,

Talea

2022

IJAPE

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“…As the outcome of the Photovoltaic (PV) module is insufficient, a suitable converter is mandatory for maximizing the PV voltage and so a boost converter is employed for this purpose. The intermittent atmospheric conditions generally affect the PV output and so it is crucial to trace the maximum power from the PV module [22][23][24][25][26]. Wind energy is another RES, which is integrated with PV systems to deliver a continuous power output.…”

Section: Introductionmentioning

confidence: 99%

Power Quality Improvement Using ANN Controller For Hybrid Power Distribution Systems

Quawi¹,

Shuaib²,

Manikandan³

2023

Intelligent Automation &Amp; Soft Computing

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In this work, an Artificial Neural Network (ANN) based technique is suggested for classifying the faults which occur in hybrid power distribution systems. Power, which is generated by the solar and wind energy-based hybrid system, is given to the grid at the Point of Common Coupling (PCC). A boost converter along with perturb and observe (P&O) algorithm is utilized in this system to obtain a constant link voltage. In contrast, the link voltage of the wind energy conversion system (WECS) is retained with the assistance of a Proportional Integral (PI) controller. The grid synchronization is tainted with the assistance of the d-q theory. For the analysis of faults like islanding, line-ground, and line-line fault, the ANN is utilized. The voltage signal is observed at the PCC, and the Discrete Wavelet Transform (DWT) is employed to obtain different features. Based on the collected features, the ANN classifies the faults in an efficient manner. The simulation is done in MATLAB and the results are also validated through the hardware implementation. Detailed fault analysis is carried out and the results are compared with the existing techniques. Finally, the Total harmonic distortion (THD) is lessened by 4.3% by using the proposed methodology.

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“…However, to inject the generated PV power into the utility grid, there are challenges arise due to the intermittent characteristics of the PV system. Among major problems caused by GCPV system are voltage rise in lowvoltage networks under increasing solar penetration levels [3], voltage fluctuation due to rapid changes in the power output of PV system [4], harmonics current introduced by the nonlinear loads [5], active and reactive power control to synchronize with the main grid and the local load [6], and transient and distortions in injected current due to mismatching in the frequency between supply and demand [7].…”

Section: Introductionmentioning

confidence: 99%

Assessment of a single-phase single-stage grid-connected photovoltaic system

Anang

Muda

Daud

2023

IJEECS

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A grid-connected photovoltaic (GCPV) system plays an important role in the development of green technology. However, generated photovoltaic (PV) power that is injected into the grid causes instability in the grid system. Previous studies have shown that power quality for a three-phase system is thoroughly being discussed, but not for a single-phase system. Single-phase system also contribute to instability in low-voltage grid networks during high power penetration as majority of the single-phase GCPV nowadays are installed on rooftops. Thus, in this study, the power quality of a single-phase single-stage GCPV system is investigated based on the total harmonic distortion (THD), power factor (PF), and the generated active (P) and reactive (Q) power during different solar irradiance and varying loads conditions. A model of the GCPV system was developed in MATLAB/Simulink, so that certain variables can be varied to observe their effect towards the power quality. The results show that the current and voltage of generated PV power are synchronized and having low current THD which is less than 1% for all cases. PF values are also in the acceptable range in compliance to IEC 61727 standard which is 0.9971, and the generated PQ is in accordance to the connected load.

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Recent advances in synchronization techniques for grid-tied PV system: A review

Cited by 65 publications

References 82 publications

PI-based PLL and 24-sector control of a 3P-3L-NPC inverter for grid-tied PV system synchronization

PI-based PLL and 24-sector control of a 3P-3L-NPC inverter for grid-tied PV system synchronization

Power Quality Improvement Using ANN Controller For Hybrid Power Distribution Systems

Assessment of a single-phase single-stage grid-connected photovoltaic system

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