A new efficient technique for disturbing current extraction to improve the grid current quality in a three-phase grid connected PV system supplying a non-linear load

Khomsi, C.; Bouzid, M.; Jelassi, Khaled

doi:10.1109/setit.2016.7939853

Cited by 4 publications

(6 citation statements)

References 11 publications

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“…The grid current was distorted by the harmonics of the load current, as the fundamental current of the system was almost fully provided by the converter. Thus, the results follow the control Equation (2). In addition, due to the reactive load connected to the PCC, the source presented a low power factor of 0.76 lagging.…”

Section: Scenario #1supporting

confidence: 66%

“…The methods employed in [2–6] require measuring both the load and converter (or grid) currents. Khomsi et al.…”

Section: Introductionmentioning

confidence: 99%

“…The methods employed in [2][3][4][5][6] require measuring both the load and converter (or grid) currents. Khomsi et al [2] proposed a harmonic-detection method using the fast Fourier transform (FFT), however, this technique requires at least one cycle delay to detect the harmonics. To reduce the time of detection, the harmonic detection proposed by Belaidi et al [3] was based on synchronous dq reference frame along with a low-pass filter (LPF) for extracting the load-current harmonics.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Several papers have been published on DER and AS application in recent years [2][3][4][5][6][7][8][9][10][11][12][13], with different methods for power generation and harmonic detection [1]. Generally, the generated power control can be based on dc-link regulation along with the maximum power point tracking or with load power, while the harmonic detection can be performed from load currents, grid currents or estimated by PCC voltages.…”

Section: Introductionmentioning

confidence: 99%

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Provision of ancillary services in a grid‐connected photovoltaic distributed energy resource

Rocha

Salvadori

Hartmann

et al. 2021

IET Generation Trans & Dist

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The constant growth of distributed energy resource (DER) in the electric power system (EPS) is a reality on account of some aspects, for example, technical, financial, environmental. The insertion of DERs can be positive, providing ancillary services, for example, harmonic mitigation, or negative, causing overvoltage, depending on the proper control and the characteristics of the grid. This paper proposes a pq-based control strategy for distributed generation, wherein the studied system is composed by a photovoltaic DER and a three-phase converter for processing the generated power and providing ancillary services (ASs) to a three-wire EPS. The power control is based on the power balance between the grid and the converter. Besides supplying active and reactive power, the proposed strategy can provide ASs by controlling the grid currents from a pq transformation. Some advantages over other solution can be mentioned, such as reduced sensor number and instantaneous control response. In addition, neither additional harmonic-extraction method nor a phase-locked loop is required. To validate this study and theoretical considerations, simulation results are presented and evaluated. From tests in a downscaled laboratory setup, experimental results are also presented to verify the effectiveness of the proposed control strategy.

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Section: Scenario #1supporting

confidence: 66%

“…The methods employed in [2–6] require measuring both the load and converter (or grid) currents. Khomsi et al.…”

Section: Introductionmentioning

confidence: 99%