Reference Current Extraction through Sliding DFT Assisted Single Phase p-q Theory for Shunt Active Power Filter

2013 ◽  
Vol 14 (2) ◽  
pp. 149-158 ◽  
Author(s):  
S. Chandrasekaran ◽  
K. Ragavan
Keyword(s):  
Single Phase ◽  
Reactive Power ◽  
Active Power ◽  
Phase Shifting ◽  
Shunt Active Power Filter ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Q Theory ◽  
Passive Filters

Abstract: Active Power Filters (APF) are more effective than conventional passive filters with regard to mitigating harmonics and compensating reactive power. As a result, deployment of APF in the distribution network is ever increasing. The performance of APF mainly depends on the reference extraction technique adopted. This work proposes sliding Discrete Fourier Transform (DFT) assisted single phase p-q theory for the extraction of reference current. The proposed algorithm exploits the inherent ability of sliding DFT (SDFT) to provide the fundamental and its quadrature component of signal (voltage or current) to derive the reference current with the help of a single-phase p-q theory. Furthermore, the algorithm involves the phase shifting of the fundamental component alone, and is suitable even for distorted utility voltage. Effectiveness of the proposed method is demonstrated through simulation results.

Application of Adaptive Tabu Search Algorithm in Hybrid Power Filter and Shunt Active Power Filters

2016 ◽  
pp. 276-308
Author(s):  
Saifullah Khalid
Keyword(s):  
Reactive Power ◽  
Load Condition ◽  
Active Power Filter ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Non Linear ◽  
Non Linear Load

A novel hybrid series active power filter to eliminate harmonics and compensate reactive power is presented and analyzed. The proposed active compensation technique is based on a hybrid series active filter using ATS algorithm in the conventional Sinusoidal Fryze voltage (SFV) control technique. This chapter discusses the comparative performances of conventional Sinusoidal Fryze voltage control strategy and ATS-optimized controllers. ATS algorithm has been used to obtain the optimum value of Kp and Ki. Analysis of the hybrid series active power filter system under non-linear load condition and its impact on the performance of the controllers is evaluated. MATLAB/Simulink results and Total harmonic distortion (THD) shows the practical viability of the controller for hybrid series active power filter to provide harmonic isolation of non-linear loads and to comply with IEEE 519 recommended harmonic standards. The ATS-optimized controller has been attempted for shunt active power filter too, and its performance has also been discussed in brief.

Application of Novel Techniques in Active Power Filter

2020 ◽  
pp. 158-191
Author(s):  
Karunendra Kumar Verma ◽  
V. M. Mishra ◽  
Niraj Kumar
Keyword(s):  
Single Phase ◽  
Reactive Power ◽  
Supply Voltage ◽  
Semiconductor Devices ◽  
Active Power Filter ◽  
Active Power ◽  
Current Control ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters

Traditionally, the major part of the electrical power is generally consumed by the non-linear loads due to frequent application of the semiconductor devices in the form of domestic and industrial loads. This results from distortion in the actual supply voltage waveform at the source end due to the interference of the multiple harmonics generated out of semiconductor devices used at load end and excessive absorption of the reactive power. The insufficiency of these compensation techniques leads to the advent of the phase multiplication techniques as well as the most reliable and economic active power filtering scheme. A deep analysis showing tedious waveforms using the ORCAD simulation package for the various kind of loads in conjunction with the single-phase active power filter shunted to the single-phase line at the load end for the two current control techniques (i.e., hysteresis band current control, triangularization of current control) has been done. The results are analyzed and tested to lead the optimistic approach for APF (active power filters).

Analysis of Transistor Open Fault Diagnosis for Shunt Active Power Filters

2017 ◽  
Vol 5 (3) ◽  
pp. 521
Author(s):  
Benyettou Loutfi ◽  
T. Benslimane
Keyword(s):  
Fault Diagnosis ◽  
Diagnostic Technique ◽  
Open Circuit ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Circuit Fault Diagnosis ◽  
Drive Systems

<p>In this paper a transistor open-circuit fault diagnosis problem in two-level voltage inverter controlled shunt active power filter drives was discussed. Taking into consideration requirements of the contemporary monitoring drive systems original transistor fault diagnostic technique were proposed. Presented results were obtained by designed in PSIM software simulation model.</p>

scholarly journals A Modular Cascaded Multilevel Inverter Based Shunt Hybrid Active Power Filter for Selective Harmonic and Reactive Power Compensation Under Distorted/Unbalanced Grid Voltage Conditions

2016 ◽  
Vol 6 (5) ◽  
pp. 1133-1138 ◽  
Author(s):  
T. Demirdelen ◽  
R. I. Kayaalp ◽  
M. Tumay
Keyword(s):  
Reactive Power ◽  
Reactive Power Compensation ◽  
Active Power ◽  
Harmonic Compensation ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Hybrid Active Power Filter ◽  
Cascaded Multilevel Inverter ◽  
Unbalanced Grid

In recent years, shunt hybrid active power filters are being increasingly considered as a viable alternative to both passive filters and active power filters for compensating harmonics. In literature, their applications are restricted to balanced systems and low voltage applications and therefore not for industrial applications. This paper investigates the performance of a modular cascaded multilevel inverter based Shunt Hybrid Active Power Filter (SHAPF) for reactive power compensation and selective harmonics elimination under distorted/unbalanced grid voltage conditions in medium voltage levels. In the proposed control method, reactive power compensation is achieved successfully with a perceptible amount and the performance results of harmonic compensation are satisfactory. Theoretical analysis and simulation results are obtained from an actual industrial network model in PSCAD. The simulation results are presented for a proposed system in order to demonstrate that the harmonic compensation performance meets the IEEE-519 standard.

scholarly journals Two-phase Three-wire Shunt Active Power Filter Control By Using The Single-phase P-q Theory

2014 ◽  
Vol 19 (3) ◽  
pp. 303-311 ◽  
Author(s):  
Pablo Carlos de Siqueira Furtado ◽  
Márcio do Carmo Barbosa Poncílio Rodrigues ◽  
Henrique Antônio Carvalho Braga ◽  
Pedro Gomes Barbosa
Keyword(s):  
Single Phase ◽  
Active Power Filter ◽  
Active Power ◽  
Two Phase ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Q Theory

scholarly journals Genetic and combinatorial algorithms for optimal sizing and placement of active power filters

2015 ◽  
Vol 25 (2) ◽  
pp. 269-279 ◽  
Author(s):  
Marcin Maciążek ◽  
Dariusz Grabowski ◽  
Marian Pasko
Keyword(s):  
Active Power Filter ◽  
Active Power ◽  
Electrical Networks ◽  
Limit Values ◽  
Filter Placement ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Passive Filters ◽  
Hybrid Filters

Abstract The paper deals with cost effective compensator placement and sizing. It becomes one of the most important problems in contemporary electrical networks, in which voltage and current waveform distortions increase year-by-year reaching or even exceeding limit values. The suppression of distortions could be carried out by means of three types of compensators, i.e., passive filters, active power filters and hybrid filters. So far, passive filters have been more popular mainly because of economic reasons, but active and hybrid filters have some advantages which should cause their wider application in the near future. Active power filter placement and sizing could be regarded as an optimization problem. A few objective functions have been proposed for this problem. In this paper we compare solutions obtained by means of combinatorial and genetic approaches. The theoretical discussion is followed by examples of active power filter placement and sizing

scholarly journals Mitigation of Harmonics in Three - Phase Three - Wire System by using Fuzzy Logic Controlled Shunt Active Filters

2020 ◽  
Vol 6 (11) ◽  
pp. 87-91
Author(s):  
Goggi Kirshna Sanyasi Rao and P.Murari
Keyword(s):  
Reactive Power ◽  
Control Strategies ◽  
Pi Controller ◽  
Active Power ◽  
Active Filters ◽  
Shunt Active Power Filter ◽  
Current Harmonics ◽  
Active Power Filters ◽  
Power Filters ◽  
Synchronous Reference Frame

This paper shows the method of improving the power quality using shunt active power filter. In order to protect the supply system from current harmonics, we have to use the active power filters. These are used to compensate the reactive power compensation, but the performance of active power filters are based on various control strategies. This paper presents the complete examination to estimate the working of SHAF for generating the current references under steady and transient for balanced, unbalanced and non-sinusoidal conditions by using PI controller. The P-Q theory and synchronous reference frame theory, which are widely used in SHAF. The most validate results obtained by simulation with matlab/simulink software are carried out with PI controller for P-Q control theory for various voltage conditions like balanced, unbalanced and non-sinusoidal conditions and dynamic load changes.

Three-Phase and Single-Phase p-q Theories Applied to Three-Phase Shunt Active Power Filter under Different Operating Conditions: A Comparative Evaluation

2010 ◽  
Vol 11 (2) ◽  
Author(s):  
Vinod Khadkikar ◽  
Ambrish Chandra
Keyword(s):  
Comparative Evaluation ◽  
Single Phase ◽  
Active Power Filter ◽  
Active Power ◽  
Operating Conditions ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Q Theory ◽  
Three Phase ◽  
Supply Voltages

This paper deals with a shunt active power filter (APF) realized using three-phase p-q (3-φ p-q) theory and single-phase p-q (1-φ p-q) theory approaches. A comparative evaluation between two p-q theories, applied to three-phase three-wire system, is presented. An in-depth simulation study is carried out for better understanding of the concepts and to explore the factors that affect the performance of both the theories. A shunt APF system is developed and tested using a DSP DS1104 of dSPACE. An extensive experimental investigation is carried out under balanced and/or unbalanced supply voltages, and balanced and/or unbalanced load conditions. It is found that both the p-q theories perform well under balanced supply voltages and balanced non-linear load condition, but, their performance degrades when supply voltages are highly distorted. The 3-φ p-q theory has advantage over 1-φ p-q theory when the load is unbalanced in nature. However, under unbalanced voltages, 3-φ p-q theory fails to demonstrate its ability to compensate the load current harmonics and reactive power, whereas, 1-φ p-q theory gives better performance.

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