A Novel Control Strategy to Active Power Filter with Load Voltage Support Considering Current Harmonic Compensation

Jafrodi, Saeedeh Torabi; Ghanbari, Mojgan; Mahmoudian, Mehrdad; Najafi, Arsalan; Rodrigues, Eduardo M. G.; Pouresmaeil, Edris

doi:10.3390/app10051664

Cited by 9 publications

(9 citation statements)

References 32 publications

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“…In ( 9), P is the average power consumed by the load and V is the rms value of the If a balanced three-phase system is assumed, the rectangular coefficients of the phase quantities are equal; in this case the second subscript i becomes unnecessary, with the coefficients becoming A I , B I . A single ANN would allow estimating the rectangular coefficients A I , B I , and hence the compensation currents (6), that can now be expressed according to (7):…”

Section: Unit Power Factor Compensation Methodsmentioning

confidence: 99%

“…They make use of parallel computing, allowing the design of control circuits of high speed and reliability. In fact, ANNs have been systematically applied in the development of APF-based equipment, even though there are countless examples of non-ANN control techniques, as in [5][6][7]. A type of ANN usually applied to the APF control is the Adaline, based on the adaptive algorithm of Widrow-Hoff.…”

Section: Introductionmentioning

confidence: 99%

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Nonlinear Loads Compensation Using a Shunt Active Power Filter Controlled by Feedforward Neural Networks

2021

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The shunt active power filter (SAPF) is a widely used tool for compensation of disturbances in three-phase electric power systems. A high number of control methods have been successfully developed, including strategies based on artificial neural networks. However, the typical feedforward neural network, the multilayer perceptron, which has provided effective solutions to many nonlinear problems, has not yet been employed with satisfactory performance in the implementation of the SAPF control for obtaining the reference currents. In order to prove the capabilities of this simple neural topology, this work describes a suitable strategy of use, based on the accurate estimation of the Fourier coefficients corresponding to the fundamental harmonic of any distorted voltage or current. An effective training method has been developed, consisting of the use of many distorted patterns. The new generation procedure uses random combinations of multiple harmonics, including the possible nominal frequency deviations occurring in real power systems. The design of the generation of reference signals through computations based on the Fourier coefficients is presented. The objectives were the harmonic mitigation and power factor correction. Practical cases were tested through simulation and also by using an experimental platform, showing the feasibility of the proposal.

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Section: Unit Power Factor Compensation Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nonlinear Loads Compensation Using a Shunt Active Power Filter Controlled by Feedforward Neural Networks

2021

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“…It acts as a controlled current source and is characterized by more merits in comparison to the series APF, which has made it widely used in industrial applications. The hybrid APF [31,32], holding the advantages of both passive and active power filters, combines improved performance and cost-effective solutions. There are two prominent configurations of the hybrid APF: a combination of the series APF and a shunt passive filter and a combination of the shunt APF and a shunt passive filter.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from this, harmonic currents compensation can be broadband or selective, often comprising harmonic current orders equal to 6k ± 1 as they are the most common existing in three-phase plants. There are also new approaches for this issue, such as the one presented in [32], which shows a hybrid APF defining the reference current on the basis of the sliding mode control. Another interesting study case is presented in [18], which proposes rectifying the problem in the electromagnetic compatibility of power electronics equipment by developing the APF's high control accuracy based on d-q control.…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis of Shunt Active Power Filter with Predictive Closed-Loop Control of Supply Current

Bielecka

Wojciechowski

2021

Energies

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This paper presents a shunt active power filter connected to the grid via an LCL coupling circuit with implemented closed-loop control. The proposed control system allows selective harmonic currents compensation up to the 50th harmonic with the utilization of a model-based predictive current controller. As the system is fully predictive, it provides high effectiveness of the harmonic reduction, which is proved by waveforms achieved in performed tests. On the other hand, the control system is prone to loss of stability. Therefore, the paper is focused on the stability analysis of the discussed control system with the additional outer control loop of the supply current with predictive control of this current. The conducted stability analysis encompasses the assessment of system stability as a function of the coupling circuit parameter identification accuracy, whose values are implemented in the current controller, as well as parameters such as the sampling frequency and proportional-integral (PI) controller coefficients. The obtained results show that the ranges of the LCL circuit parameter identification accuracy for which the system remains stable are relatively wide. However, the most effective compensation of the supply current distortion is achieved for the parameters identified correctly, and the greatest impact on the compensation quality has the value of L1 inductance.

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“…Electrical energy produced by a PV installation is basically a DC system. Therefore, it must be converted into AC power to make it available in power utility through a grid-tie inverter [1][2][3]. Transformerless voltage source inverters (VSIs) are the standard choice in detriment of current source inverters (CSIs), because they show better conversion efficiency, smaller size, and lower manufacturing costs for the same power rating.…”

Section: Introductionmentioning

confidence: 99%

An Efficient H7 Single-Phase Photovoltaic Grid Connected Inverter for CMC Conceptualization and Mitigation Method

Mahmoudian

Rodrigues²,

Pouresmaeil

2020

Electronics

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Transformerless inverters are the economic choice as power interfaces betweenphotovoltaic (PV) renewable sources and the power grid. Without galvanic isolation and adequatepower convert design, single-phase grid connected inverters may have limited performance due tothe presence of a significant common mode ground current by creating safety issues and enhancingthe negative impact of harmonics in the grid current. This paper proposes an extended H6transformerless inverter that uses an additional power switch (H7) to improve common modeleakage current mitigation in a single-phase utility grid. The switch with a diode in seriesconnection aims to make an effective clamp of common mode voltage at the DC link midpoint. Theprinciples of operation of the proposed structure with bipolar sinusoidal pulse width modulation(SPWM) is presented and formulated. Laboratory tests’ performance is detailed and evaluated incomparison with well-known single-phase transformer-less topologies in terms of powerconversion efficiency, total harmonic distortion (THD) level, and circuit components number. Thestudied topology performance evaluation is completed with the inclusion of reactive powercompensation functionality verified by a low-power laboratory implementation with 98.02%efficiency and 30.3 mA for the leakage current.

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A Novel Control Strategy to Active Power Filter with Load Voltage Support Considering Current Harmonic Compensation

Cited by 9 publications

References 32 publications

Nonlinear Loads Compensation Using a Shunt Active Power Filter Controlled by Feedforward Neural Networks

Nonlinear Loads Compensation Using a Shunt Active Power Filter Controlled by Feedforward Neural Networks

Stability Analysis of Shunt Active Power Filter with Predictive Closed-Loop Control of Supply Current

An Efficient H7 Single-Phase Photovoltaic Grid Connected Inverter for CMC Conceptualization and Mitigation Method

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