Power Quality Improvement of a Solar Energy Conversion System by a Coordinated Active and LCL Filtering

Ouai, Atallah; Mokrani, L.; Machmoum, Mohamed; Houari, Azeddine

doi:10.3311/ppee.17215

Cited by 2 publications

(2 citation statements)

References 25 publications

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“…2 System description Fig. 1 [14] represents the configuration of HMSS (Hokuto Mega-Solar System) grid connected. From this structure, our study is focused on the 400 kW Power Conditioning System (PCS) of the 2nd stage, which is consisted of a 400 kW inverter and two 200 kW choppers as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Voltage Error Estimation-Based Fault Diagnosis Method for Three- phase PWM-inverter in Grid-connected Photovoltaic Power System Without any Over-rating

Ouai,

Mokrani,

Machmoum

et al. 2024

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

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Inverter is an essential component of a grid connected PV system. In fact, an open-switch fault in this power converter could result an important system malfunction and consequently leads to system disconnection. In this context, this paper focuses on the fault-tolerant control of PWM-inverter with redundancy leg for grid-connected PV system. In addition, a fast method of fault detection and compensation is used to maintain the continuous operation of the converter when there is a half-leg open-circuit fault (IGBT+ anti-parallel diode) on one of PWM-inverter legs. Therefore, it can detect this type of fault and compensate it in less than 50 μs by using a time criterion instead of voltage criterion. Also, the fuzzy logic technique is employed to control the active and reactive power injected into the network without exceeding the whole system power capacity limits. Note that, in this study, the active and reactive power references of the chosen operating point (the reactive-to-active power ratio: tgφ = Q/P = 0.19) are based on experimental tests. Simulation results show the feasibility and the effectiveness of the proposed fault diagnosis method in terms of fault detection and service continuity in presence of a half-leg open-circuit fault in PWM-inverter without any over-rating of the PV system components or instability.

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Section: Introductionmentioning

confidence: 99%

Voltage Error Estimation-Based Fault Diagnosis Method for Three- phase PWM-inverter in Grid-connected Photovoltaic Power System Without any Over-rating

Ouai,

Mokrani,

Machmoum

et al. 2024

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

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“…In contrast, this DC power is transported to the grid by converting it to AC power in the second stage, using PWM inverters [5]. The PWM inverter is generally used as a shunt active-power filter (SAPF) to reduce harmonic current, compensate for reactive power, and insert PV-generated energy into the main grid [6].…”

Section: Introductionmentioning

confidence: 99%

Backstepping Based Grey Wolf and DPC for Power Quality Improvement and Active Power Injection in PV Grid-connected System Based on Interleaved Boost Converter

Daia Eddine,

Chebabhi,

Kessal

2023

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

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This research offers the backstepping based grey wolf control design for a multifunctional PV grid-connected system (MPGC) based on four phases interleaved boost converter. This work proposes a solution to the issues of harmonic mitigation, reactive power compensation, and PV-generated power injection into the grid-based MPGC. The interleaved boost converter (IBC), controlled using maximum power point tracking (MPPT), is utilized to harvest the photovoltaic (PV) system's peak power and overcome the conventional topology's drawbacks. Direct power control (DPC) based on space-vector pulse width modulation (SVPWM) is used to control the instantaneous power of the MPGC, and the backstepping control (BSC) is applied to the whole system to maintain the robustness and stability of the suggested method. The Grey Wolf Optimizer (GWO) optimized the system's dynamic response by adjusting the BSC parameters. The results were obtained using MATLAB/Simulink software. The suggested work shows excellent performance based on the obtained results, achieving the sinusoidal waveform of the currents and a unity power factor. Total harmonic distortion (THD) has been decreased below 5% in accordance with IEEE 519-2014 standard.

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Power Quality Improvement of a Solar Energy Conversion System by a Coordinated Active and LCL Filtering

Cited by 2 publications

References 25 publications

Voltage Error Estimation-Based Fault Diagnosis Method for Three- phase PWM-inverter in Grid-connected Photovoltaic Power System Without any Over-rating

Voltage Error Estimation-Based Fault Diagnosis Method for Three- phase PWM-inverter in Grid-connected Photovoltaic Power System Without any Over-rating

Backstepping Based Grey Wolf and DPC for Power Quality Improvement and Active Power Injection in PV Grid-connected System Based on Interleaved Boost Converter

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