DSOGI-PLL With In-Loop Filter Based Solar Grid Interfaced System for Alleviating Power Quality Problems

Ranjan, Ashish; Kewat, Seema; Singh, Bhim

doi:10.1109/tia.2020.3029125

Cited by 50 publications

(11 citation statements)

References 30 publications

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“…This section reports the comparative analysis through numerical simulation and experimental validation. As a comparison tool, double second‐order generalized integrator phase‐locked loop (SOGI‐PLL) [47] is selected. SOGI‐PLL are selected as: SOGI gain,

k = \sqrt{2}

and PLL gains,

k_{p} = 177.7

and

k_{i} = 15971

.…”

Section: Resultsmentioning

confidence: 99%

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A Quasi open‐loop robust three‐phase grid‐synchronization technique for non‐ideal grid

Ahmed

Biricik

Benbouzid

2021

IET Generation Trans & Dist

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Development of advanced grid-synchronization technique for unbalanced and distorted grid is considered in this paper. In this context, self-tuning filter (STF) is considered to extract the fundamental component from the measured unbalanced and distorted voltages. Standard STF considers balanced grid voltages which is not always possible to ensure in the actual power grid. To mitigate this issue, an extended STF is proposed by analyzing the standard STF in the state-space framework. To make the proposed ESTF grid-following, a robust open-loop frequency estimator is also applied. The closed-loop system enjoys excellent filtering benefit from the extended STF side while taking advantage of the fast convergence speed property of the open-loop frequency estimation technique. Numerical simulation and experimental results with double second-order generalized integrator phase-locked loop are provided to validate the theoretical developments.

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k = \sqrt{2}

and PLL gains,

k_{p} = 177.7

and

k_{i} = 15971

.…”

Section: Resultsmentioning

confidence: 99%

“…In practice, the actual frequency of the power grid is not a constant value. It continuously varies within a specified limit, typically between 47…”

Section: Frequency Estimationmentioning

confidence: 99%

A Quasi open‐loop robust three‐phase grid‐synchronization technique for non‐ideal grid

Ahmed

Biricik

Benbouzid

2021

IET Generation Trans & Dist

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show abstract

“…The power grid’s angular frequency is calculated using a dual second-order generalized integrator–phase locked loop (DSOGI-PLL) provided in Ranjan et al , (2021) and Meral and Celik (2018) allowing the transformation to be obtained. In single-phase power converter systems, for controlling frequency and phase measurements of alternating current signals, the second-order generalized integrator (SOGI)-based PLL is commonly used (Satapathy et al , 2016).…”

Section: Comparison Of Static Synchronous Compensator and Series Hybr...mentioning

confidence: 99%

Comparative analysis of dual second-order generalized integrator-phase locked loop based series hybrid filter and static synchronous compensator for load voltage compensation and power quality improvement with grid synchronization in islanded microgrid

Vasantharaj

Indragandhi

2022

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Purpose The purpose of this study is to eliminate voltage harmonics and instantly measure the positive sequence fundamental voltage during unbalanced grid conditions, the dual second-order generalized integrator-phase locked loop used in series hybrid filter structures is often used in grid synchronisation in three-phase networks. The preferred series active hybrid power filter simultaneously compensates for voltage balancing and current harmonics generated by non-linear loads. Design/methodology/approach This paper examines the use of renewable energy–based microgrid (MG) to support linear and non-linear loads. It is capable of synchronising with both the utility and the diesel generator unit. Power is transferred from the grid throughout a stable grid situation with minimum renewable energy generation and maximum load demand. It synchronises with diesel generator set to supply the load and form an AC MG during outages and minimum renewable power generation. In islanded and grid-connected mode, the voltage and power quality issues of the MG are controlled by static synchronous compensator and series hybrid filter. Findings Because of the presence of non-linear loads, reactive loads in the distribution system and the injection of wind power into the grid integrated system result power quality issues like current harmonics, voltage fluctuations, reactive power demand, etc. Originality/value The voltage at the load (linear and non-linear) is regulated, and the power factor and total harmonic distortions were improved with the help of the series hybrid filter.

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“…Grid synchronization is originally utilized for grid‐tied inverters [26], in which the synchronization is done using a phase‐locked loop (PLL) or a controlling method that integrates with PLL [27, 28]. fuzzy‐logic method [29], second‐order generalized integrator (SOGI) [30] and its derivatives like discrete SOGI [31, 32], limit‐cycle oscillator [33], vector‐based PLL [34], multiple‐complex coefficient filter based PLL (MCCF) [35], Kalman‐filter based PLL [36], synchronous reference frame (SRF) PLL [37], all‐pass‐filter based PLL [38], morphological PLL [39], non‐adaptive window‐based PLL [40], delayed signal cancellation based PLL [41] and VCO‐based PLL [42] are some recent trends. Grid PLLs must be robust against the line voltage harmonics and determine the frequency and exact phase angle.…”

Section: Introductionmentioning

confidence: 99%

A novel bidirectional synchronized transfer method for multilevel electric drive systems based on discrete Fourier transformation

Keshavarzian

Eshkevari

Abdoli

et al. 2022

IET Power Electronics

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Bidirectional synchronized transfer (BST) in variable frequency drive (VFD) systems implies automatic synchronization with seamless transfer of the motor to the grid or take‐over of the motor from the grid. This feature is realized if the magnitude, frequency, and phase angle of the VFD voltage and the grid voltage are synchronized. So, an accurate synchronization algorithm is necessary. This paper proposes a new BST method based on the discrete Fourier transformation (DFT) that obtains the magnitude, frequency and phase angle of VFD and grid voltages precisely through determining the fundamental components. This new BST coordinates the output voltage of the VFD with the grid using two error amplifiers. Also, additional decoupling reactors or transformers are no longer required by using this method due to exact estimation and synchronization. Furthermore, the algorithm can be integrated into any motor control strategy. This paper presents the principle of the proposed BST comprehensively and evaluates it by experimental results. The algorithm is tested on an induction motor via a 13‐level cascaded H‐bridge (CHB) inverter and the V/Hz constant control. The effect of BST on the motor voltage and current, the inverter current and dc‐link voltage is also examined. Results confirm the proposed strategy.

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DSOGI-PLL With In-Loop Filter Based Solar Grid Interfaced System for Alleviating Power Quality Problems

Cited by 50 publications

References 30 publications

A Quasi open‐loop robust three‐phase grid‐synchronization technique for non‐ideal grid

A Quasi open‐loop robust three‐phase grid‐synchronization technique for non‐ideal grid

Comparative analysis of dual second-order generalized integrator-phase locked loop based series hybrid filter and static synchronous compensator for load voltage compensation and power quality improvement with grid synchronization in islanded microgrid

A novel bidirectional synchronized transfer method for multilevel electric drive systems based on discrete Fourier transformation

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