Grid-voltage synchronization algorithm for grid tied renewable energy sources during adverse grid fault condition

Fuad, Khaled Syfullah; Hossain, Eklas; Chowdhury, Rahmat Ullah

doi:10.1109/iciset.2016.7856524

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…4×∆𝐼 𝐿 𝑚𝑎𝑥 ×𝐹 𝑠𝑤 (7) For the capacitance value, C, the equation used is the formula to calculate the cut-off frequency, F c , as represented in (8).…”

Section: 𝐿 = 𝑉 𝑑𝑐mentioning

confidence: 99%

“…Yaai et al [7] proposed a control strategy of a PV grid-connected inverter to stabilize the grid during grid fault by maintaining a balanced output using a fault ride-through control strategy. Fuad et al [8] researched grid voltage synchronization based on various PLL techniques, which were SRF-PLL and decoupled double SRF-PLL (DDSRF-PLL). The results showed that the SRF-PLL technique demonstrated a deficient performance under unstable conditions, while the DDSRF-PLL technique had limitations that were reflected in its performance under harmonically distorted conditions and phase angle jumps.…”

Section: Introductionmentioning

confidence: 99%

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Fast synchronization with enhanced switching control for grid-tied single-phase square wave inverter using FPGA

Sithananthan,

Bakar,

Sannasy

et al. 2024

IJPEDS

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Research on grid synchronization has been conducted worldwide by researchers in conjunction with the development of innovative technologies, such as dedicated short-range communication (DSRC) and cellular vehicle-to-everything (C-V2X). However, grid-connected inverters face several challenges, mainly the mismatch in voltage amplitude, frequency, and phase angle, as well as grid voltage disturbance and grid faults. Thus, the control algorithm of this research mainly focused on a half-cycle algorithm to design an enhanced digital switching control for fast synchronization using an FPGA. The control algorithm was developed based on zero-crossing detection (ZCD) and digital phase-locked loop (PLL) modeling techniques using the hardware description language (HDL) and a combination of digital logic blocks in Quartus II software, where the proposed switching was applied using the square-wave switching technique through a 300-watt full-bridge experimental prototype. The performance of the proposed technique was studied, where the total harmonic distortion (THD) for voltage and current resulted in a percentage reduction of 89.29% and 78.05% for voltage and current, respectively, after filter implementation. Also, the resulting signal synchronized in every half cycle and matched the voltage amplitude, frequency, and phase angle of the grid signal in 10 ms.

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“…4×∆𝐼 𝐿 𝑚𝑎𝑥 ×𝐹 𝑠𝑤 (7) For the capacitance value, C, the equation used is the formula to calculate the cut-off frequency, F c , as represented in (8).…”

Section: 𝐿 = 𝑉 𝑑𝑐mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fast synchronization with enhanced switching control for grid-tied single-phase square wave inverter using FPGA

Sithananthan,

Bakar,

Sannasy

et al. 2024

IJPEDS

View full text Add to dashboard Cite

show abstract

“…All of the methods mentioned above use conventional PLL blocks in the control algorithms. Conventional PLL performs well during balanced condition but their performance is not acceptable during unbalanced conditions due to the "Double frequency oscillation" and can be termed as 2ω oscillation [66]- [67]. The 2ω oscillation arises due to the coupling of the positive and negative voltage sequences during unbalanced conditions.…”

Section: ) Frequency Controlmentioning

confidence: 99%

Soft Open Point in Distribution Networks

et al. 2020

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The main objective of this paper is to present a comprehensive review of soft open point (SOP), an emerging power electronics technology to maximize future distribution networks' (DNs) resiliency and flexibility as well as increase hosting capacity for distributed energy resources like photovoltaics and electric vehicles. The SOP is currently an active area of research and ongoing development of new control techniques for SOP and optimization algorithm for the optimal use of SOP in DNs produces new techniques until DN operators use it comprehensively in their systems. The motivation for this work is to present the research that has been completed for the SOP and summarize the duties of SOP in DNs according to the literature and propose advanced duties for SOP according to modern standards. Finally, future research directions are mentioned to pave the way for research in the coming years to drive the DNs towards more flexibility and 'Robust' from controllability, stability, and protection structure point of view. INDEX TERMS Distribution networks, grid-connected converters, power electronics, soft open point, normally open points.

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Frequency Characteristic and Impedance Analysis on Three-Phase Grid-Connected Inverters Based on DDSRF-PLL

Huang

Chen

et al. 2019

2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia)

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Grid-voltage synchronization algorithm for grid tied renewable energy sources during adverse grid fault condition

Cited by 3 publications

References 14 publications

Fast synchronization with enhanced switching control for grid-tied single-phase square wave inverter using FPGA

Fast synchronization with enhanced switching control for grid-tied single-phase square wave inverter using FPGA

Soft Open Point in Distribution Networks

Frequency Characteristic and Impedance Analysis on Three-Phase Grid-Connected Inverters Based on DDSRF-PLL

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