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).

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.

Simulating Research on a New Current Controlling Method

2011 ◽  
Vol 354-355 ◽  
pp. 1016-1021
Author(s):  
Jin Jie Peng ◽  
Xiao Ping Fan
Keyword(s):  
Single Phase ◽  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Current Control ◽  
Power Filter ◽  
Hybrid Active Power Filter ◽  
Grid Impedance ◽  
Detecting Method ◽  
High Voltage System

A new current detecting algorithm is proposed in the paper, which is applied in an improved hybrid active power filter. The filter equipment can be applied in high voltage system to suppress harmonics and compensate reactive power. The topology and filtering principle of the filter equipment is given. The harmonic suppressing function is adopted to analyze the influence by the grid impedance, quality factor and losing resonance of the resonance circuit. The feasibility of the proposed system is validated in theory. A single-phase current detecting method is also proposed. The corresponding current control is formed combined the DC-link current detecting method. The simulating results prove that the system is feasibility and the current control is validity. Harmonic and reactive power are suppressed well.

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.

Simulation of Aviation Series Active Power Filter

2012 ◽  
Vol 433-440 ◽  
pp. 2945-2948
Author(s):  
Xue Jun Su ◽  
Ren Xi ◽  
Cheng Gang Wang
Keyword(s):  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Harmonic Current ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Instantaneous Reactive Power ◽  
Harmonic Voltage ◽  
Iq Method

Active power filters have properties in rapid reflection, better compensation and the ability in dynamic suppression. An aviation series active power filter based on ip，iq method according to the theory of instantaneous reactive power was designed and simulated with PSIM in this paper. Simulation result states that the filter can compensate harmonic voltage sources, consume harmonic current, and it has good dynamic and steady properties. The result gives a way in aviation series active power filter’s design and application.

scholarly journals Enhancement of Power Quality Using Voltage and Hall Effect Current Sensors Applied on Controlled Single-Phase Active Power Filter

2020 ◽  
Vol 2 (1) ◽  
pp. 74
Author(s):  
Felipe Barnabé ◽  
Marco Rocha ◽  
Guilherme Clerice
Keyword(s):  
Hall Effect ◽  
Power Quality ◽  
Single Phase ◽  
Active Power Filter ◽  
Active Power ◽  
Economic Losses ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Harmonic Content

Switched-mode power supply and semiconductor devices have been gaining more and more applicability in the industrial scenario. With the massive use of these devices, several problems related to power quality and equipment degradation have been arising, caused mainly by the harmonic content present in current and voltage. Power quality problems have direct implications for business productivity, causing high economic losses. Therefore, it is mandatory to develop solutions that mitigate these problems. Active power filters (APF) are power electronic equipment capable of compensating power quality problems. Moreover, it presents the ability to dynamically adjust their modes of operation in response to changes in load or the power systems. Active power filters present the economical advantage of using the same current and voltage sensors already existing in a power system. Aiming to develop an APF for single-phase applications, this work proposes a shunt controlled active power filter using hall effect current and voltage sensor, aiming to compensate harmonic currents provided by nonlinear loads. It was proposed two proportional-integral compensators, where the external loop is responsible for link-CC control and the inner loop is responsible for current compensation. The results show the applicability of the proposed APF, since all harmonic content was filtered.

Power Quality Improvement of High Voltage DC Link using Modified Shunt Active Power Filter

2018 ◽  
Vol 1 (1) ◽  
pp. 54-66
Author(s):  
Rakan Khalil Antar ◽  
Basil Mohammed Saied ◽  
Rafid Ahmed Khalil
Keyword(s):  
Power Quality ◽  
High Voltage ◽  
Pulse Width Modulation ◽  
Active Power Filter ◽  
Active Power ◽  
Voltage Source ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Power Quality Improvement

A new control strategy for active power filters is proposed, modeled and implemented in order to improve the power quality of a line commutated converter High voltage DC link. The ability of reactive power and harmonics reductions are generally met by using passive and active power filters. In this paper, modified active power filter with a modified harmonics pulse width modulation algorithm is used to minimize the source harmonics and force the AC supply current to be in the same phase with AC voltage source at both sending and receiving sides of a line commutated converter high voltage DC link. Therefore, it is considered as power factor corrector and harmonics eliminator with random variations in the load current. The modified harmonics pulse width modulation algorithm is applicable for active power filter based on a three-phase five-level and seven-level cascaded H-bridge voltage source inverter. Simulation results show that the suggested modified multilevel active power filters improve total harmonics distortion of both voltage and current with almost unity effective power factor at both AC sides of high voltage DC link. Therefore, modified active power filter is an effective tool for power quality improvement and preferable for line commutated converter high voltage DC link at different load conditions.

scholarly journals Improving Power Quality by a Four-Wire Shunt Active Power Filter: A Case Study

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1951
Author(s):  
Mihaela Popescu ◽  
Alexandru Bitoleanu ◽  
Mihaita Linca ◽  
Constantin Vlad Suru
Keyword(s):  
Power Quality ◽  
Quality Indicators ◽  
Reactive Power ◽  
Control Method ◽  
Active Power Filter ◽  
Active Power ◽  
Current Control ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Unbalanced Load

This paper presents the use of a three-phase four-wire shunt active power filter to improve the power quality in the Department of Industrial Electronics of a large enterprise from Romania. The specificity is given by the predominant existence of single-phase consumers (such as personal computers, printers, lighting and AC equipment). In order to identify the power quality indicators and ways to improve them, an A-class analyzer was used to record the electrical quantities and energy parameters in the point of common coupling (PCC) with the nonlinear loads for 27 h. The analysis shows that, in order to improve the power quality in PCC, three goals must be achieved: the compensation of the distortion power, the compensation of the reactive power and the compensation of the load unbalance. By using the conceived three-leg shunt active power filter, controlled through the indirect current control method in an original variant, the power quality at the supply side is very much improved. In the proposed control algorithm, the prescribed active current is obtained as a sum of the loss current provided by the DC voltage and the equivalent active current of the unbalanced load. The performance associated with each objective of the compensation is presented and analyzed. The results show that all the power quality indicators meet the specific standards and regulations and prove the validity of the proposed solution.

Review of Control Methods for Active Power Filters

2013 ◽  
Vol 811 ◽  
pp. 657-660 ◽  
Author(s):  
You Jie Ma ◽  
Hong De Yuan ◽  
Xue Song Zhou
Keyword(s):  
Power System ◽  
Control Strategies ◽  
Active Power Filter ◽  
Active Power ◽  
Power Electronic ◽  
Active Power Filters ◽  
Power Filter ◽  
Power Filters ◽  
Reactive Current ◽  
Contrast Analysis

With the wide application of power electronic equipments in power system, more and more harmonic are poured into the power system, which cause power pollution and make the power quality problem increasingly serious. Active power filter (APF) is an important equipment to compensate harmonic and reactive current in power system. One of the key technologies lies in the real-time and accurate control. The fundamental principles of several control strategies of compensate current were presented, and the respective merit and demerit of these control strategies were pointed out with contrast analysis in this paper. Active power filter will achieve a higher performance and a wider application with the continuous development of the control strategy.

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