scholarly journals Shunt Active and Series Active Filters-Based Power Quality Conditioner for Matrix Converter

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
P. Jeno Paul
Keyword(s):  
Power Quality ◽  
High Performance ◽  
Matrix Converter ◽  
Active Filter ◽  
Active Filters ◽  
Shunt Active Filter ◽  
Active Power Filters ◽  
Power Filters ◽  
The Matrix ◽  
Power Quality Conditioner

This paper proposes a series active filter and shunt active filter to minimize the power quality impact present in matrix converters instead of passive filter. A matrix converter produces significant harmonics and nonstandard frequency components into load. The proposed system compensates the sag and swell problems efficiently in matrix converter. The proposed system has been tested and validated on the matrix converter using MATLAB/Simulink software. Simulated results confirm that the active power filters can maintain high performance for matrix converter.

scholarly journals POWER QUALITY IMPROVEMENT IN MATRIX CONVERTER USING HYBRID FILTER

2013 ◽  
pp. 155-159
Author(s):  
RASHMI S. PHASATE ◽  
ARCHANA BAWANKAR
Keyword(s):  
Quality Improvement ◽  
Power Systems ◽  
Power Quality ◽  
Matrix Converter ◽  
Active Filter ◽  
Hybrid Filter ◽  
Shunt Active Filter ◽  
Matrix Converters ◽  
The Matrix ◽  
Power Quality Improvement

This paper proposes a hybrid filter to minimize the power quality impact of matrix converters. Matrix converters inject significant harmonics and nonstandard frequency components into power systems. The hybrid filter is used to reduce the harmonics. A hybrid filter constructed of a shunt active filter and distributed passive filters used for power quality improvement. The proposed approach has been tested and validated on the matrix converter using Matlab/Simulink. The comparison of Simulation results for passive and active filter separately used with matrix converter with the result of matrix converter with hybrid filter is shown to demonstrate the advantages of the proposed scheme.

scholarly journals Enhancing the LVRT Capability and Mitigation of Power Quality Issues Using UPQC of a Grid Connected Wind Conversion System

2017 ◽  
Vol 7 (3) ◽  
pp. 643
Author(s):  
C.S Boopathi ◽  
Kuppusamy Selvakumar ◽  
Avisek Dutta
Keyword(s):  
Power Quality ◽  
Reactive Power ◽  
Low Voltage ◽  
Active Filter ◽  
Shunt Active Filter ◽  
Unified Power Quality Conditioner ◽  
Conversion System ◽  
Quality Issues ◽  
Power Quality Conditioner ◽  
Doubly Fed

In this paper unified power quality conditioner has been used to enhance low voltage ride through capability of grid connected wind conversion system taking Doubly fed induction generator (DFIG). Unified Power quality conditioner (UPQC) device is a combination of series active filter and shunt active filter. This custom power device is mainly used to mitigate power quality issues which is an essential factor today because of wide application of power electronics devices. UPQC is capable to deal with voltage and current imperfection simultaneously. It is installed in the system mainly to improve the power quality i.e. Voltage sag/swell, Harmonics, reactive power compensation etc. at point of common coupling. System is modeled in MATLAB/SIMULINK and results shows utilization of UPQC for the enhancement of LVRT of a DFIG wind system according to Grid code. when fault occurs in the system, it will create voltage dip and series compensator of UPQC injects during this time to prevent disconnection from grid and stay connected to contribute during fault. UPQC is also used for fast restoration of system steady state, power factor improvement, prevent rotor over current.

scholarly journals A Hybrid Active Filter Using the Backstepping Controller for Harmonic Current Compensation

Symmetry ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1161 ◽  
Author(s):  
Daou ◽  
Montoya ◽  
Ababssi ◽  
Djeghader
Keyword(s):  
Power Quality ◽  
Harmonic Distortion ◽  
Active Power ◽  
Active Filter ◽  
Electricity Grid ◽  
Active Power Filters ◽  
Power Filters ◽  
Logic Control ◽  
Backstepping Controller ◽  
The Stability

This document presents a new hybrid combination of filters using passive and active elements because of the generalization in the use of non-linear loads that generate harmonics directly affecting the symmetry of energy transmission systems that influence the functioning of the electricity grid and, consequently, the deterioration of power quality. In this context, active power filters represent one of the best solutions for improving power quality and compensating harmonic currents to get a symmetrical waveform. In addition, given the importance and occupation of the transmission network, it is necessary to control the stability of the system. Traditionally, passive filters were used to improve energy quality, but they have endured problems such as resonance, fixed remuneration, etc. In order to mitigate these problems, a hybrid HAPF active power filter is proposed combining a parallel active filter and a passive filter controlled by a backstepping algorithm strategy. This control strategy is compared with two other methods, namely the classical PI control, and the fuzzy logic control in order to verify the effectiveness and the level of symmetry of the backstepping controller proposed for the HAPF. The proposed backstepping controller inspires the notion of stability in Lyapunov’s sense. This work is carried out to improve the performance of the HAPF by the backstepping command. It perfectly compensates the harmonics according to standards. The results of simulations performed under the Matlab/Simulink environment show the efficiency and robustness of the proposed backstepping controller applied on HAPF, compared to other control methods. The HAPF with the backstepping controller shows a significant decrease in the THD harmonic distortion rate.

New Method to Harmonic Isolation Based on High Selectivity Filter to Control of Shunt Active Filter with Experimental Validation Using DSPACE System

2014 ◽  
Vol 666 ◽  
pp. 53-58
Author(s):  
Mohamed Muftah Saleem
Keyword(s):  
High Selectivity ◽  
Control Method ◽  
Active Filter ◽  
Current Control ◽  
Control Technique ◽  
Harmonic Compensation ◽  
Shunt Active Filter ◽  
Active Power Filters ◽  
Power Filters ◽  
Current Controller

This paper presents a new control method of a parallel active power filters based on improved harmonic isolation with hardware implementation. The harmonic isolator is based on High Selectivity Filters (it can be tuned at any frequency) and the current control technique consists in a modulated hysteresis current controller. This active filter is intended for harmonic compensation of a diode rectifier feeding a RL load. The study of the active filter control is divided in two parts. The first part deals with the harmonic isolator which generates the harmonic reference currents and is implemented into a DSPACE DS1104 prototyping card. The second part focuses on the generation of the switching pattern of the IGBTs of the inverter by the modulated hysteresis current controller, implemented into an analogue card. The use of High Selectivity Filters instead of classical extraction filters allows extracting directly the voltage and current fundamental components in the α-β axis at high performances. The effectiveness of the new proposed method is verified by computer simulation and by experimental study.

scholarly journals Design and Development of Shunt Active Filter Using MATLAB for Minimization of Harmonics

2018 ◽  
Vol 7 (3.10) ◽  
pp. 179 ◽  
Author(s):  
Ravi Samikannu ◽  
R Rohini ◽  
V Sampath Kumar ◽  
Vitaliy Mezhuyev
Keyword(s):  
Power Quality ◽  
Research Work ◽  
Active Power ◽  
Phase System ◽  
Nonlinear Loads ◽  
Shunt Active Power Filter ◽  
Shunt Active Filter ◽  
Active Power Filters ◽  
Power Filters ◽  
Sinusoidal Current

Nonlinear loads draw non sinusoidal current and voltage from the utility. These non-sinusoidal current and voltages created due to nonlinear loads are called harmonics. The harmonic voltage and current disturbs the system back and creates big power quality problem. Therefore in order to mitigate harmonic problems different mechanisms are used. In this work as introduction different power quality problems, harmonics and their mitigation techniques/filters are presented and discussed. Between the different ways to minimize/eliminate harmonics active power filters are most Prominent one. This research work presents three phase system shunt active power filter working based on PQ theory. MATLAB simulation used and results are discussed.  

scholarly journals Improvement of Power Quality using a Robust Hybrid Series Active Power Filter

2021 ◽  
Vol 9 (VI) ◽  
pp. 2311-2316
Author(s):  
Dasari Vinay
Keyword(s):  
Power Quality ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Pi Controller ◽  
Active Power ◽  
Active Filter ◽  
Active Filters ◽  
Total Harmonic Distortion ◽  
Shunt Active Filter ◽  
Power Filter

In this paper we are going to see how the DSM PI controller is used to reduce the harmonics in faster. DSM PI controller steps up the voltage to required level. The main aim is to improve the total harmonic distortion. Keywords: Shunt active filter, hybrid active filters, DSM PI controller

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 Trends in Power Quality, Harmonic Mitigation and Standards for Light and Heavy Industries: A Review

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5792
Author(s):  
David Lumbreras ◽  
Eduardo Gálvez ◽  
Alfonso Collado ◽  
Jordi Zaragoza
Keyword(s):  
Power Quality ◽  
Industrial Applications ◽  
Active Power ◽  
Active Filters ◽  
Shared Responsibility ◽  
Negative Consequences ◽  
Active Power Filters ◽  
Electrical Grid ◽  
Power Filters ◽  
The Impact

The power quality of electrical grids is becoming an important issue worldwide. The electrical grid has to deliver sinusoidal voltages and currents without frequency or amplitude variations. However, the connection of non-linear loads generates harmonics that degrade the grid quality. The presence of harmonics in the load currents has many negative consequences and can distort the voltage waveform at the point of common coupling (PCC). Thus, it is essential to mitigate the harmonics in order to maintain a suitable grid quality. This is a shared responsibility between energy suppliers, manufacturers of electric and electronic equipment, and users. In this context, this work presents, for each stakeholder, a comprehensive analysis of their responsibilities and the standards that they should meet. Additionally, this paper reviews the most common types of filters used to comply with the applicable standards in industrial applications. Finally, in order to prove that active power filters allow maintaining good power quality in all types of grid, commercially available active power filters were installed in three different grids contexts: an office building, a factory, and a stadium with a large number of LEDs. The experimental results obtained were used to evaluate the impact of active filters on grid quality. This review would help users to overcome their grid distortion problems.

scholarly journals Recent Trends in Power Quality Improvement: Review of the Unified Power Quality Conditioner

2021 ◽  
Vol 19 (3) ◽  
pp. 268-288
Author(s):  
Swati Gade ◽  
Rahul Agrawal ◽  
Ravindra Munje
Keyword(s):  
Power Quality ◽  
Distribution System ◽  
Electrical Power ◽  
Widespread Application ◽  
Active Power Filters ◽  
Power Filters ◽  
Unified Power Quality Conditioner ◽  
Power Quality Improvement ◽  
Technological Developments ◽  
Power Quality Conditioner

The electrical power sector is currently focusing on power quality (PQ) issues and their mitigation. Industrial automation and the use of power electronic converters for the integration of distributed generation create various PQ problems. This necessitates PQ enhancement, which in turn helps to improve the life span of the equipment as well as the reliability of supply for feeding critical loads within the system. This paper presents a comprehensive review of the Unified Power Quality Conditioner (UPQC) and its widespread application in the distribution system. The UPQC belongs to the family of active power filters. It contributes to the alleviation of voltage and current-related PQ issues along with power factor correction and the integration of renewable energy systems in the distribution network. This paper discusses various topologies, compensation methods, control theories, and the technological developments in recent years. More than 160 research papers have summarized the features of UPQC for further applications. Based on the outcomes of the investigation, the future direction of the UPQC is discussed. This paper is expected to play a major role in guiding research scholars in the application of the UPQC.

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