The Design and Implementation of a Shunt Active Power Filter based on Source Current Measurement

2007 ◽  
Author(s):  
Engin Ozdemir ◽  
Mehmet Ucar ◽  
Metin Kesler ◽  
Murat Kale
Keyword(s):  
Active Power Filter ◽  
Active Power ◽  
Current Measurement ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Design And Implementation ◽  
Source Current

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.

A Shunt Active Power Filter for 12 Pulse Converter Using Source Current Detection Approach

2016 ◽  
Vol 7 (1) ◽  
pp. 225 ◽  
Author(s):  
Rajesh T ◽  
Nirmalkumar A
Keyword(s):  
Distribution System ◽  
Active Power Filter ◽  
Active Power ◽  
Detection Methods ◽  
Shunt Active Power Filter ◽  
Power Distribution System ◽  
Power Filter ◽  
Pulse Converter ◽  
Source Current ◽  
Current Detection

A shunt Active Power Filter (APF) with current detection at the source side is considered as a closed-loop system from the view of the whole power distribution system, which is expected with better harmonics filtering performance compared with conventional current detection methods such as load current detection and open loop control.  This paper introduces an efficient source current detection method (direct) control scheme to mitigate the grid current harmonics generated by the twelve pulse converter.  The proposed system uses Control Rectifier (12 –pulse converter) which efficiently regulates the DC voltage by varying the angle of each 6 pulse converter. Moreover, the proposed system uses three winding transformer which eliminates the harmonics during equal angles switching at each six pulse converter which in turn simplifies the operation of the SAPF. The proposed system is simulated in MATLAB SIMULINK to evaluate the performance of the proposed system.

scholarly journals Source current harmonic mitigation of distorted voltage source by using shunt active power filter

2020 ◽  
Vol 10 (4) ◽  
pp. 3967
Author(s):  
Muhammad Ossama Mahmoud ◽  
Wael Mamdouh ◽  
Hamdy Khalil
Keyword(s):  
Input Signal ◽  
Active Power Filter ◽  
Active Power ◽  
Control Circuit ◽  
Voltage Source ◽  
Shunt Active Power Filter ◽  
Current Harmonics ◽  
Power Filter ◽  
Source Current ◽  
Source Voltage

In this paper, three-phase, four-wire shunt active power filter (SAPF) is utilized to mitigate system harmonics of distorted voltage source for unbalanced and nonlinear loads. Basically, the source voltage should be pure sinusoidal waveform to get a good mitigation of source current harmonics. In this under study system, the source voltage is assumed to be harmonic distortion non-sinusoidal voltage source. The phase locked loop (PLL) control circuit is wielded for extracting the fundamental component of the distorted source voltage to use it as an input signal to the SAPF control. Another input signal to the SAPF is the distorted load current. The SAPF control system uses (p-q) theory to calculate the optimum instantaneous current to be injected by the SAPF to mitigate the source current harmonics even the source voltage is harmonic distorted. MATLAB/SIMULINK software package is utilized to simulate the system under study. The effect of SAPF is tested when it’s used with and without the PLL control circuit. The simulation results show that, the THD of source current when using the PLL control circuit is improved to comply with the harmonic limits given in the IEEE 519-1992 and IEC 61000-4-7 standards.

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