Power factor control of a photovoltaic system connected to grid under load variation

Essaghir, Soukaina; Benchagra, Mohamed; Barbri, Noureddine El

doi:10.1109/eitech.2017.8255285

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…Active and reactive power with variation load by using PI ad PR controller For this purpose, the simulation shows the importance of the proposed work and gave us the expected results. Therefore, and compared to other researches [11,24], the PR corrector proposed allows us to have a unit power factor despite the addition of the reactive load and especially without influencing the pace of the reactive power and without introducing any instantaneous phase difference between the voltage and the current injected into grid.…”

Section: Results and Analysismentioning

confidence: 97%

“…The concept of this type of control is to impose the active and reactive power values injected into grid in order to keep unity power factor. By acting on the PWM control, the control loops, must impose the instantaneous values of the currents delivered by the inverter (io1,io2,io3) in such a way that the currents supplied by the grid (ia,ib,ic) become sinusoidal and in phase with the corresponding single voltages (Va,Vb,Vc) [11]. We describe the active and reactive power of the three-phase grid-connected VSI in the Park reference (d, q), we obtain the following equations: 3 ( .…”

Section: Active and Reactive Power Control 31 Pv Power Calculationmentioning

confidence: 99%

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Comparison between PI and PR Current Controllers of a Grid- Connected Photovoltaic System Under Load Variation

Essaghir

Benchagra

Barbri

2018

IJPEDS

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This paper presents a current control technique for a three-phase grid-connected DC /AC inverter which is used in photovoltaic systems. A Proportional-Resonant (PR) controller is used for replacing the conventional Proportional-Integral (PI) controller in this system. By comparison with the conventional PI control method, the PR control can introduce an infinite gain at the fundamental frequency and hence can achieve zero steady-state error. The proposed model is based on two control loops: the first control loop regulates DC link voltage and the second one is used to keep the injected current to the grid in phase with the voltage by means of a Phase Locked Loop (PLL) in order to achieve a unit power factor and to adjust the output power as required. In order to examine the effectiveness of the suggested control, a simulation using the Matlab/Simulink software has been done and it’s concluded from the simulation results that the presented control by using the PR controller can be able to maintain maximum active power and to keep always a unity power factor despite variation load.

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Section: Results and Analysismentioning

confidence: 97%

Section: Active and Reactive Power Control 31 Pv Power Calculationmentioning

confidence: 99%

Comparison between PI and PR Current Controllers of a Grid- Connected Photovoltaic System Under Load Variation

Essaghir

Benchagra

Barbri

2018

IJPEDS

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“…In the literature, many studies have focused on the design methods of linear controllers for photovoltaic systems connected to grid. Among these methods we can find: the classical PI controller generally used in industry, because it is cheap, robust, and it is easy to implement [6], it produces good results in linear systems. However, it has certain limitations, given thel uncertainties, and non-linear loads.…”

Section: Introductionmentioning

confidence: 99%

A robust nonlinear control strategy of a PV System connected to the three-phase grid based on backstepping and PSO technique

Zouga

Benchagra

Ailane

2021

IJPEDS

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This article presents a robust non-linear control technique of the three-phase photovoltaic system. The structure chosen for this PV system is that of two power converters and DC voltage intermediate bus. The two power converters are: the DC-DC converter and the three-phase inverter, which requires two main controllers. These controllers have three main objectives. The first objective is to impose the PV voltage generated by the photovoltaic panel, in order to follow a maximum reference voltage provided by the MPPT block. The second one is to maintain the DC link voltage to a constant value, in order to optimize the transfer of energy between the two power converters. The last objective is to inject a three-phase sinusoidal current into the grid, while respecting a unit power factor. With the intention to achieve these three objectives, we designed cascading nonlinear controllers by using the technique of non-linear backstepping control in the synthesis of these two controllers, based on the Lyapunov function, with regard to maximise the PVG output voltage, in order to have a unitary power factor at the grid side. In order to regulate DC-link voltage, we developed an integral proportional controller (PI) with parameters that are optimized by the Particle Swarm Optimization (PSO) method. The robustness of the controller designed approach is tested by a simulation in MATLAB/Simulink software, that improves the performances of each controller whatever conditions of climate.

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Control of a Proportional Resonant Current Controller Based Photovoltaic Power System

Essaghir¹,

Benchagra²,

Barbri³

2019

Advances in Intelligent Systems and Computing

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Power factor control of a photovoltaic system connected to grid under load variation

Cited by 6 publications

References 5 publications

Comparison between PI and PR Current Controllers of a Grid- Connected Photovoltaic System Under Load Variation

Comparison between PI and PR Current Controllers of a Grid- Connected Photovoltaic System Under Load Variation

A robust nonlinear control strategy of a PV System connected to the three-phase grid based on backstepping and PSO technique

Control of a Proportional Resonant Current Controller Based Photovoltaic Power System

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