Study of a common control strategy for grid-connected shunt active photovoltaic filter without DC/DC converter

Alali, Mohamad Alaa Eddin; Sabiri, Zakaria; Shtessel, Yuri B.; Barbot, Jean–Pierre

doi:10.1016/j.seta.2021.101149

Cited by 6 publications

(7 citation statements)

References 13 publications

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“…The grid active and reactive powers (p g and q g ) can be expressed in the abc-frame as follows [6]:…”

Section: Grid Connected Four-leg Pwm Vsi Modeling In Dq0-frame Based ...mentioning

confidence: 99%

“…For this purpose, considerable attention and challenge is directed towards renewable energy resources (RER) that are inexhaustible and spotless, including solar and wind energy technology [2,3]. Because of its high reliability, efficiency, low total harmonic distortion (THD), fast dynamics, high-power applications, and bidirectional power flow, the three-phase three-leg PWM voltage source inverter (VSI) is the key device and the most common choice for interfacing, controlling, and delivering renewable energy [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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New Modeling and Improved Current Control Strategy to Eliminate the Impact of Synchronization Method and Parks Transformation for Grid-connected Four-leg PWM Inverter

Al-Dwa

Chebabhi

Defdaf

et al. 2023

Period. Polytech. Elec. Eng. Comp. Sci.

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The synchronization method’s ability is one of the fundamental guarantees for the stability and accuracy of injected current control for grid-connected converter-based distribution resources. These synchronization methods, such as phase locked loop (PLL), are generally based on Park transformation and grid voltage regulation, which may affect an unstable phenomenon under distortion and unbalanced grid voltage conditions and result in more computational complexity. In this present paper, analogous to the traditional voltage-oriented control strategy (VOC) in the synchronous rotating frame (dq0-frame) based on PLL and Parks transformation, an improved voltage-oriented control strategy (IVOC) without synchronization methods and Parks transformation is proposed for grid-connected four-leg inverters (GC-FLVSI) to achieve accurate current control with high-quality performance in the dq0-frame. This proposed strategy is not only used for controlling the GC-FLVSI but also to provide the module of GC-FLVSI in the dq0-frame based on the instantaneous active and reactive powers theory (DPC). The proposed IVOC strategy has the same properties and identical performance as the traditional VOC when the grid phase angle is correctly detected by any synchronization method, with the advantages of both traditional DPC and VOC at the same time. In order to validate the superiority and excellent dynamic and steady-state performances of the proposed IVOC strategy in comparison with the traditional VOC strategy, some simulation scenarios using MATLAB/Simulink under different operations and grid conditions have been performed and presented.

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“…The grid active and reactive powers (p g and q g ) can be expressed in the abc-frame as follows [6]:…”

Section: Grid Connected Four-leg Pwm Vsi Modeling In Dq0-frame Based ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Modeling and Improved Current Control Strategy to Eliminate the Impact of Synchronization Method and Parks Transformation for Grid-connected Four-leg PWM Inverter

Al-Dwa

Chebabhi

Defdaf

et al. 2023

Period. Polytech. Elec. Eng. Comp. Sci.

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“…In [20], SMT was proposed for 3 modules, ACHB-MLI with two DC voltages configurations to generate 19, 27 voltage levels, respectively. These configurations use ratios of [1:2:6] and [1:3:9], where the second one corresponds to the independent DC voltages of [24,48,144] V. In order to motivate the choice of the number of ACHB modules associated with the SMT algorithm, a complementary study, via-a-vis the literature, is made in this research. In this context, a comparison between 3-and 4modules SMT-SCHB structure supplying/driving a low voltage sensitive load, for instance asynchronous motor, is made as presented in Table . 1.…”

Section: ) Achb-mli Based On the Smtmentioning

confidence: 99%

“…The equivalent capacitance selection for each CHB module will correspond to the industrial demand. In this context, the following expression is derived and adapted to our study [24]:…”

Section: D-dc-link Capacitors Rating Selectionmentioning

confidence: 99%

Developed AC/DC/AC Converter Structure Based on Shunt Active Filter and Advanced Modulation Approach for Asymmetrical Cascade H-Bridge Multilevel Inverters

Karania,

AlalI,

Di Gennaro

et al. 2023

IEEE Open J. Ind. Electron. Soc.

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This paper presents a free-harmonic AC/DC/AC converter structure using a novel modulation approach for Asymmetrical Cascade H-Bridge Multi-Level Inverter (ACHB-MLI) and, conventional rectifiers combined with a shunt active filter, for grid integration. The novel approach SMT-SHE combines two modulation techniques: the Staircase Modulation Technique (SMT) and the Selective Harmonics Elimination (SHE). SMT-SHE approach achieves a sinusoidal-like output stepping voltage with variable output voltage amplitude and free of wide band or/and specific harmonics to fulfill the sensitive loads specifications; by determining the appropriate SHE switching angles. The precalculated switching angles are optimized to minimize the number of H-bridge modules and lower the DC capacitors rating. Furthermore, a restriction on the switching angles is proposed to prevent the appearance of undesired harmonics (zeros, even) and consequently overcome the limitation of the SHE algorithm applicability. Finally, a real case study in textile factory is conducted, using real measurements provided by power quality analyzer measuring devices, to validate the proposed AC/DC/AC converter supplying a sensitive load of 50 kVA, given by an asynchronous motor drive.

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“…For the DC bus voltage control, the use of a proportional-integral controller, as shown in Figure 1 , is proposed. Then, neglecting the switching losses in the inverter, the relation between the regulating power

and the capacitor voltage

can be written as follows [ 28 ]:

…”

Section: State Of the Art Of Lcl/saf Structure Controllersmentioning

confidence: 99%

Sensor Effects in LCL-Type Grid-Connected Shunt Active Filters Control Using Higher-Order Sliding Mode Control Techniques

Alali

Shtessel

Barbot

et al. 2022

Sensors

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The effects of measuring devices/sensors on improving the power quality (PQ) of electric networks are studied in this paper. In this context, improving the performance of an LCL-type grid connected to a three-phase three-wire shunt active filter (SAF) in the presence of voltage perturbations is studied. In order to ensure the high-quality performance of LCL-SAF in the presence of voltage perturbations, the robust continuous second-order sliding mode controller (2-SMC), including twisting and super-twisting controllers, and continuous higher-order sliding mode controller (C-HOSMC)-based approaches are employed. These controllers, whose outputs are processed by pulse-width modulation (PWM), allow minimization of the phase shift and prevent the generation of discontinuous chattering commands, which can severely damage the VSI components. Moreover, an integration of a generalized instantaneous power identification algorithm with an advanced phase locked loop (PLL) was proposed and experimentally tested to validate the effective performances of SAF under severe perturbations. Additionally, the studied approaches were tested via simulations taking into account a conventional nonlinear industrial load in a real textile factory environment, using measurements provided by power quality analyzers. Finally, the effects of the measuring devices, including the current and voltage sensors, on the accuracy and reliability of the SAF and, consequently, on the PQ of the electric power grid were studied via simulations and experimentally. The results of this study support the validity of the recently published patent.

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Study of a common control strategy for grid-connected shunt active photovoltaic filter without DC/DC converter

Cited by 6 publications

References 13 publications

New Modeling and Improved Current Control Strategy to Eliminate the Impact of Synchronization Method and Parks Transformation for Grid-connected Four-leg PWM Inverter

New Modeling and Improved Current Control Strategy to Eliminate the Impact of Synchronization Method and Parks Transformation for Grid-connected Four-leg PWM Inverter

Developed AC/DC/AC Converter Structure Based on Shunt Active Filter and Advanced Modulation Approach for Asymmetrical Cascade H-Bridge Multilevel Inverters

Sensor Effects in LCL-Type Grid-Connected Shunt Active Filters Control Using Higher-Order Sliding Mode Control Techniques

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