Fuzzy logic controller for three-level shunt active filter compensating harmonics and reactive power

2015 ◽  
Vol 30 (6) ◽  
pp. 809-823 ◽  
Author(s):  
Salem Saidi ◽  
Rabeh Abbassi ◽  
Souad Chebbi
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Reactive Power ◽  
Active Filter ◽  
Shunt Active Filter

PHOTOVOLTAIC SYSTEM WITH A DC–DC CONVERTER FED SHUNT ACTIVE FILTER FOR POWER QUALITY IMPROVEMENT USING ICos Φ ALGORITHM

2014 ◽  
Vol 23 (09) ◽  
pp. 1450132 ◽  
Author(s):  
G. VIJAYAKUMAR ◽  
R. ANITA
Keyword(s):  
Fuzzy Logic Controller ◽  
Reactive Power ◽  
Active Filter ◽  
Photovoltaic System ◽  
Pv System ◽  
Shunt Active Filter ◽  
Point Tracking ◽  
Consequent Reduction ◽  
Small Industry ◽  
Power Point

This paper presents an operation of photovoltaic (PV)-based shunt active filter (SAF) for significant energy conservation, harmonic mitigation and reactive power compensation. When the PV system generates excessive or equal power required to the load demand, then the coordinating logic disconnects the service grid from the load and with a consequent reduction of panel tariff and global warming gasses. The PV module is connected to the DC side of SAF through the DC–DC converter. Converter switch is controlled by fuzzy-based perturb & observe (P&O) maximum power point tracking (MPPT) algorithm and it eliminates the drawback in the conventional PV system. The reference currents are extracted by the fuzzy logic controller-based ICos Φ control strategy. This proposed PV-SAF, if connected at the terminals of a small industry or a home or a small enlightening institution can avoid the use of interruptible power supply and individual stabilizer. An emulation using MATLAB Simulink is presented to validate the advantage of the proposed system.

scholarly journals Intelligent Hybrid-Fuzzy Controller using VLLMS Based Shunt Active Filter

2020 ◽  
Vol 06 (09) ◽  
pp. 215-229
Author(s):  
Shaik Nagul Sharif and Sri Latha Veerla
Keyword(s):  
Power System ◽  
Fuzzy Logic Controller ◽  
Reactive Power ◽  
Fuzzy Controller ◽  
Pi Controller ◽  
Active Filter ◽  
Active Filters ◽  
Nonlinear Load ◽  
Shunt Active Filter ◽  
Non Linear

The power quality problem in the power system is increased with the use of non-linear devices. Due to the use of non-linear devices like power electronic converters, there is an increase in harmonic content in the source current. Due to this there is an increase in the losses, instability and poor voltage waveform. To mitigate the harmonics and provide the reactive power compensation, we use filters. There are different filters used in the power system. Passive filters provide limited compensation, so active filters can be used for variable compensation. In this work, a shunt active filter has been made adaptive using a Variable Leaky Least Mean Square (VLLMS) based controller. Proposed adaptive controller can be able to compensate for harmonic currents, power factor and nonlinear load unbalance. DC capacitor voltage has been regulated at a desired level using a PI controller and a self-charging circuit technique. But, this scheme as two disadvantages such as, tuning issues of current controller pre-requisites the traditional PI controller, which is controlled by intelligent based Hybrid-Fuzzy-Logic controller for achieving good performance features. The design concept of proposed intelligent Hybrid-Fuzzy controller for shunt active filter has been verified through simulation analysis and results are presented with proper comparisons.

scholarly journals Fuzzy Logic Controller Based Three-phase Shunt Active Filter for Line Harmonics Reduction

2007 ◽  
Vol 3 (2) ◽  
pp. 76-80 ◽  
Author(s):  
M.R. Mohan ◽  
G. Uma ◽  
C. Sharmeela ◽  
J. Baskaran
Keyword(s):  
Fuzzy Logic ◽  
Fuzzy Logic Controller ◽  
Active Filter ◽  
Shunt Active Filter ◽  
Three Phase

scholarly journals Power Quality Improvement using Intelligent Fuzzy-VLLMS Based Shunt Active Filter

2020 ◽  
Vol 8 (6) ◽  
pp. 1004-1012
Keyword(s):  
Power System ◽  
Power Quality ◽  
Fuzzy Logic Controller ◽  
Reactive Power ◽  
Pi Controller ◽  
Active Filter ◽  
Active Filters ◽  
Nonlinear Load ◽  
Shunt Active Filter ◽  
Non Linear

The power quality problem in the power system is increased with the use of non-linear devices. Due to the use of non-linear devices like power electronic converters, there is an increase in harmonic content in the source current. Due to this there is an increase in the losses, instability and poor voltage waveform. To mitigate the harmonics and provide the reactive power compensation, we use filters. There are different filters used in the power system. Passive filters provide limited compensation, so active filters can be used for variable compensation. In this paper, a shunt active filter has been made adaptive using a Variable Leaky Least Mean Square (VLLMS) based controller. Proposed adaptive controller can be able to compensate for harmonic currents, power factor and nonlinear load unbalance. DC capacitor voltage has been regulated at a desired level using a PI controller and a self-charging circuit technique. But, this scheme has two disadvantages such as, tuning issues of current controller pre-requisites the traditional PI controller, which is controlled by intelligent based Fuzzy-Logic controller for achieving good performance features. The design concept of proposed intelligent Fuzzy controller for shunt active filter has been verified through simulation analysis and results are presented with proper comparisons.

scholarly journals SHAF for Mitigation of Current Harmonics Using p-q Method with PI and Fuzzy Controllers

2011 ◽  
Vol 1 (4) ◽  
pp. 98-104 ◽  
Author(s):  
S. Mikkili ◽  
A. K. Panda
Keyword(s):  
Fuzzy Logic Controller ◽  
Reactive Power ◽  
Industrial Applications ◽  
Active Filter ◽  
Harmonic Compensation ◽  
Shunt Active Filter ◽  
Current Harmonics ◽  
Pi Controllers ◽  
Equipment Failures ◽  
Nuisance Tripping

Commencing with incandescent light bulb, every load today creates harmonics. Unfortunately, these loads vary with respect to their amount of harmonic content and response to problems caused by harmonics. Issue of Harmonics are of a greater concern to engineers, building designers and in industrial applications because they do more than distort voltage waveforms, they can overheat the building wiring, cause nuisance tripping, overheat transformer units, and cause random end-user equipment failures. Thus power quality has become more and more serious with each passing day. As a result active power filter (APF) gains much more attention due to excellent harmonic compensation. But still the performance of the active filter seems to be in contradictions with different control techniques. The main objective of this paper is to analyse shunt active filter with fuzzy and pi controllers. To carry out the analysis, we consider active and reactive power method (p-q). Extensive simulations were carried out; simulations were performed with balance, unbalanced and non sinusoidal conditions. Simulation results validate the dynamic behaviour of fuzzy logic controller over pi controller.

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