Unity power factor Converter based on a Fuzzy controller and Predictive Input Current

Bouafassa, Amar; Rahmani, Lazhar; Kessal, Abdelhalim; Babes, Badreddine

doi:10.1016/j.isatra.2014.08.001

Cited by 26 publications

(16 citation statements)

References 9 publications

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“…Normally, FL system receives the two inputs such as voltage error and rate of change of voltage error. The membership functions are assigned for the input variable in fuzzification stage [11][12][13][14][15]. In fuzzification stage, crisp value of the input is converted into fuzzy value.…”

Section: Fuzzy Logic Based Regulation Voltage In Ac-dc Systemmentioning

confidence: 99%

Fuzzy Logic Based Power Factor Correction in Single Phase AC-DC System

Şenol

2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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In recent years, there has been a significant increase in the number of power electronics converters used in both industrial and home appliances devices. The utilization of electronic ballasts and switching mode power supply in power conservation introduced the trouble of power quality. The currents used by these devices are not sinusoidal and these currents are known as non-linear. Boost type power factor correction (PFC) converters are becoming popular due to their conformity in power system quality problems. Conventionally, power factor correction converters were controlled using Proportional-Integral-Differential (PID) controller to reduce harmonic disturbances and enhance the power factor (PF). Conversely, for non-linear system, their performances are not very acceptable. Because PFC circuit is not linear, in this paper fuzzy logic (FL) controller used to adjust the gain PID controller to improve the performance is presented. It is proposed that when there is fluctuation in the voltage input, the input current should be made by a FL controller. This FL controller has a great effect by keeping the phase angle between current and voltage at a very small value, bringing the PF factor closer to 1.0. This great effect has also been demonstrated in experimental studies. The proposed FL based PFC controller converter is analyzed in MATLAB/Simulink environment under variable loads and different voltages. The Performance results (total harmonic distortion, PF and efficiency) has been calculated for different input voltage and different loads. From these results it can be seen that the PF value is always improved to a value greater than 0.985, efficiency is more than 85% and total harmonic distortion of current is around 4% to 12,5%. The performance results of the FL based PFC is in acceptable ranges in terms of THD according to IEC 61000-3-2. For the THD values the cubic polynomial regression analysis was performed in MATLAB/ Basic Toolbox. (Version R2020b).

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Section: Fuzzy Logic Based Regulation Voltage In Ac-dc Systemmentioning

confidence: 99%

Fuzzy Logic Based Power Factor Correction in Single Phase AC-DC System

Şenol

2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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“…This representation is called switched form as it explains the switching behaviors of the DC-DC converters [14]. The minimum values of the self-inductance (L) and output capacitance (C) for the DC-DC power converter are precisely designed as follows:…”

Section: Dc-dc Buck Converter Modelmentioning

confidence: 99%

New Optimal Control of Permanent Magnet DC Motor for Photovoltaic Wire Feeder Systems

Babes¹,

Boutaghane²,

Hamouda³

et al. 2020

JESA

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This article aims to improve the permanent magnet DC (PMDC) motor performance for photovoltaic (PV) wire-feeder systems (PVWFSs) of arc welding machines. The considered technique is designed by direct speed control based on optimal Fractional-order Fuzzy PID FO-Fuzzy-PID controller. The purpose is to ensure optimal control of wire feed speed reference to reduce torque ripples and hence, the performance of the WFS is improved. The dynamic reaction of the proposed solar PVWFS relies upon the scaling factors of FO-Fuzzy-PID controller, which are optimized by using teaching-learning algorithm based on Particle Swarm Optimization (PSO) method. The maximum power point tracking (MPPT) is achieved using an intelligent FO-Fuzzy-PID current controller based Perturb and Observe (P&O) MPPT algorithm. The PVWFS system incorporating the proposed method is tested and compared with the conventional PID control scheme under different weather conditions. The simulation of the proposed system by MATLAB\SIMULINK is carried out. The simulation results indicate the effectiveness of the considered control strategy in terms of the reduction in torque oscillations, optimizing electrical power and wire feed speed.

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“…It is interesting to note that while a variety of solutions aiming to weaken the above-mentioned trade-off was proposed in the literature [19] - [23], modern analog controllers still use classical PI or type-II compensation networks while digital controllers typically utilize some kind of gain scheduling to improve DC link voltage behavior during transients thus sacrificing the THD [24]. Thus, the inherent trade-off between grid-side power quality and DC link voltage deviation during load variation still exists.…”

Section: Introductionmentioning

confidence: 99%

Analytical Expressions for Voltage Controller Coefficients to Attain Desired Values of Total Harmonic Distortion and DC Link Voltage Undershoot in Power Factor Correction Rectifiers

Kuperman¹

2021

Preprint

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The paper reveals analytical expressions linking the coefficients of PI controller, typically employed as voltage loop compensator of power factor correction rectifiers (PFCR), with two major performance merits (namely, total harmonic distortion (THD) of grid-side current and DC-link voltage deviation upon sudden load increase) and DC link capacitance to rated power ratio. The proposed methodology allows to concretize the commonly used "8–10Hz crossover frequency, 45 degree–70 degree phase margin" rule-of-thumb, typically utilized in application notes of commercial PFC controllers. Relations between voltage loop gain crossover frequency and phase margin as well as settling time of DC-link voltage response to a step load increase to the above mentioned performance merits are also derived in the paper. Provided design guidelines allow to precisely achieve desired values of the two mentioned performance merits and indicate the feasible range of possible DC link capacitance values. Proposed quantitative design guidelines are well-supported by experiments.

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Unity power factor Converter based on a Fuzzy controller and Predictive Input Current

Cited by 26 publications

References 9 publications

Fuzzy Logic Based Power Factor Correction in Single Phase AC-DC System

Fuzzy Logic Based Power Factor Correction in Single Phase AC-DC System

New Optimal Control of Permanent Magnet DC Motor for Photovoltaic Wire Feeder Systems

Analytical Expressions for Voltage Controller Coefficients to Attain Desired Values of Total Harmonic Distortion and DC Link Voltage Undershoot in Power Factor Correction Rectifiers

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