Adaptive Method for Power Quality Improvement through Minimization of Harmonics Using Artificial Intelligence

2017 ◽  
Vol 8 (1) ◽  
pp. 470 ◽  
Author(s):  
P. Thirumoorthi ◽  
Raheni T D
Keyword(s):  
Artificial Intelligence ◽  
Power System ◽  
Power Quality ◽  
Active Power Filter ◽  
Pi Controller ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Non Linear ◽  
Source Current

Power system harmonics are a menace to electric power system with disastrous consequence. Due to the presence of non linear load, power quality of the system gets affected.  To overcome this, shunt active power filter have been used near harmonic producing loads or at the point of common coupling to block current harmonics. The shunt active power filter is designed to minimize harmonics in source current and reactive power in the non linear power supplies which are creating harmonics. In this paper, Instantaneous power of p-q theory is employed to generate the reference currents and PI controller is used to control the dc link voltage. In addition to this, Artificial Intelligence (AI) technique is used to minimize the harmonics produced by nonlinear load. The main objective of this paper is to analyze and compare THD of the source current with PI controller and by artificial neural network based back propagation algorithm. The proposed system is designed with MATLAB/SIMULINK environment.

Performance Evaluation of Three Phase Shunt Active Power Filter in Power System Using Non-Linear Controller

2019 ◽  
Vol 11 (12-SPECIAL ISSUE) ◽  
pp. 1193-1204 ◽  
Author(s):  
G. Boopathy ◽  
Dr.M. Siva Ramkumar ◽  
Dr.A. Amudha ◽  
Dr. Viyathukattuva ◽  
Dr.G. Emayavaramban ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Power System ◽  
Active Power Filter ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Linear Controller ◽  
Three Phase ◽  
Non Linear

scholarly journals Simulation and Analysis of a Three-phase Shunt Active Power Filter

2020 ◽  
pp. 162-166
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Three Phase ◽  
Non Linear ◽  
The Impact

This paper presents the simulation-based study and results of a three-phase shunt active power filter (SAPF) for power quality improvement. The power quality of the power systems is degraded because of the presence of non-linear loads at the consumer end. The SAPF can reduce the impact of harmonics caused by the non-linear loads. The analyzed SAPF system is modeled and simulated using MATLAB-Simulink workspace. The ultimate goal of this study is to improve the total harmonic distortion of the system as per the standards defined by IEEE-519.

scholarly journals Effect of Utility Voltage Distortion on the Performance of Different Control Strategies for Shunt Active Power Filter

2017 ◽  
Vol 2 (8) ◽  
pp. 27
Author(s):  
Ahmed Mohammed Attiya Soliman ◽  
Salah Kamal El-Sayed ◽  
M. A. Mehanna
Keyword(s):  
Power Quality ◽  
Control Strategy ◽  
Control Algorithm ◽  
Control Strategies ◽  
Active Power Filter ◽  
Active Power ◽  
Current Control ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Non Linear

The widespread use of power electronics in industrial, commercial and even residential electrical equipment like non-linear loads causes deterioration of the quality of the electric power supply with distortion of the supply voltage and in order to mitigate this quality the shunt active power filter (SAPF) is the suitable and effective solution for harmonic elimination and reactive power compensation and lead to power quality (PQ) improvement, therefor an effective and accurate current control technique is needed in order for a SAPF where control algorithm is the heart for SAPF to perform this function and its dynamic performance is mainly depends on these control strategy. This paper proposes three different current control strategies (CCS) based on instantaneous power theory and generalized fryze theory which used for the generation or extraction of the accurate reference current signals which comparing with the actual signals through hysteresis current technique (HCT) to produce suitable gating signals for SAPF and discusses the performance for these controllers when the supply bus voltage is distorted with scope on the efficient control algorithm. Matlab / Simulink simulation results are presented to validate the control strategy and demonstrate the effectiveness of SAPF to provide mitigation of power quality problems for non-linear load to reach an acceptable value comply with recommended standards.

scholarly journals Effect of Unified Power Quality Conditioner on Voltage and Current Waveforms

2021 ◽  
Vol 18 (11) ◽  
Author(s):  
Muhammad Ossama MAHMOUD ◽  
Wael MAMDOUH ◽  
Hamdy KHALIL
Keyword(s):  
Power Quality ◽  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Unified Power Quality Conditioner ◽  
Source Current ◽  
Source Voltage ◽  
Power Quality Conditioner

Power quality improvement faces different and significant problems due to voltage instability and the wide use of electronic power devices. To overcome these different power quality problems, an active power filter is used. The active power filter, in general, has 4 main categories- shunt, series, unified power quality conditioner, and hybrid active power filter. The shunt active power filter is usually used to mitigate source current harmonics and compensate reactive power for power factor correction. The series active power filter is usually used to mitigate voltage problems (sags, swells, transients, dips, distortions, harmonics, etc.). The unified power quality conditioner is a combination of the shunt active power filter and the series active power filter; it is used to mitigate all voltage and current problems, compensate voltage, current system harmonics, and reactive power compensation, and mitigate voltage dips, voltage sags, voltage swells, and voltage phase shift. In this paper, the 3-phase 3-wire unified power quality conditioner is utilized to mitigate all power system problems (voltages and currents) and discuss the effect of the shunt and series active power filter separately on source voltage and source current waveforms. This case study shows that the source voltage distortion can be mitigated by using the series active power filter alone, but the source current distortion cannot be mitigated without using both the series and shunt active power filter. The source current harmonic problem mainly exists due to 1) distorted voltage sources, and 2) non-linear loads. Therefore, the unified power quality conditioner must be used to mitigate source current distortions in the case of the distorted voltage source, to comply with the standard limits IEEE 519, IEC 555, and IEC 61000. HIGHLIGHTS The UPQC is used to mitigate all voltage and current problems and improve all power system quality The SEAPF eliminates all voltage problems The SHAPF has no effect on source voltage The SHAPF eliminates source current harmonic distortion GRAPHICAL ABSTRACT

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