scholarly journals Shunt Active Power Filter: A Review on Phase Synchronization Control Techniques

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 791
Author(s):  
Yap Hoon ◽  
Mohd Amran Mohd Radzi ◽  
Muhammad Ammirrul Atiqi Mohd Zainuri ◽  
Mohamad Adzhar Md Zawawi
Keyword(s):  
Power System ◽  
Phase Synchronization ◽  
Active Power Filter ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Harmonic Currents ◽  
Working Principle ◽  
And Performance ◽  
Suitable Technique

Owing to the destructive impacts of harmonic currents, the topic of reducing their impacts on power system has attracted tremendous research interests. In this regard, a shunt active power filter (SAPF) is recognized to be the most reliable instrument. It performs by first detecting the harmonic currents that are present in a harmonic-contaminated power system, and subsequently generates and injects corrective mitigation current back into the power system to cancel out all the detected harmonic currents. This means that other than the ability to generate corrective mitigation current itself, it is actually more important to make sure that the SAPF is able to operate in phase with the operating power system, so that the mitigation current can correctly be injected. Hence, proper synchronization technique needs to be integrated when designing the control algorithms of SAPF. This paper critically discusses and analyzes various types of existing phase synchronization techniques which have been applied to manage operation of SAPF; in terms of features, working principle, implementation and performance. The analysis provided can potentially serve as a guideline and provision of information on selecting the most suitable technique for synchronizing SAPF with the connected power system.

scholarly journals Adaptive Frequency-Based Reference Compensation Current Control Strategy of Shunt Active Power Filter for Unbalanced Nonlinear Loads

Energies ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 3080
Author(s):  
Chen ◽  
Lan ◽  
Chen ◽  
Chen
Keyword(s):  
Power System ◽  
Control Strategy ◽  
Phase Synchronization ◽  
Active Power Filter ◽  
Active Power ◽  
Current Control ◽  
Adaptive Compensation ◽  
Nonlinear Loads ◽  
Shunt Active Power Filter ◽  
Power Filter

The shunt active power filter (SAPF) is an effective means for the modification of power quality. However, the compensation performance of SAPF would be deteriorated when the unbalanced nonlinear loads are present in the power system. To enhance the compensation performance of SAPF, the adaptive frequency-based reference compensation current control strategy is proposed in this paper. The proposed solution procedure can be divided into three stages including adaptive frequency detection, phase synchronization, and adaptive compensation. With the tracking of power system frequency, the phase synchronization for the SAPF compensation can be effectively modified under the power variation of unbalanced nonlinear loads. Based on the correct synchronization phase angle, the reference compensation current of SAPF can be accurately obtained with the adaptive linear neural network (ALNN) in the stage of adaptive compensation. In addition, the direct current (DC)-link voltage of SAPF can also be effectively regulated to maintain the compensation performance. To verify the effectiveness of the proposed adaptive frequency-based reference compensation current control strategy, the comprehensive case studies implemented with the hardware-in-the-loop (HIL) mechanism are performed to examine the compliance with the specification limits of IEEE Standard 519-2014. The experimental results reveal that the performance of proposed SAPF control strategy is superior to that of the traditional instantaneous reactive power compensation control technique (p-q method) and sliding discrete Fourier transform (DFT).

scholarly journals Series Compensation by using Shunt Active Filter to Mitigate the Harmonic Currents

2021 ◽  
Vol 9 (VI) ◽  
pp. 3012-3013
Author(s):  
Janjirala Sai Kamal
Keyword(s):  
Power System ◽  
Electronic Devices ◽  
Active Power Filter ◽  
Active Power ◽  
Series Compensation ◽  
Shunt Active Power Filter ◽  
Shunt Active Filter ◽  
Power Filter ◽  
Harmonic Currents ◽  
High Level

The rise in power electronic devices in power system has increased the problems of harmonics and power quality. In this paper I have discussed about the harmonics that are developed in power system due to non-linear loads. The damage of harmonics may rise from normal level to high level depending on their duration and the order of harmonic .So to mitigate this harmonics in power system I have introduced shunt active power filter by series compensation method. In this paper it is discussed how harmonics are reduced using shunt active power filter and it is shown through MATLAB/Simulink .The results of the simulation have been shown where the harmonics developed in power supply has reduced.

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
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