scholarly journals Modified Modeling and System Stabilization of Shunt Active Power Filter Compensating Loads with μF Capacitance

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2084 ◽  
Author(s):  
Yuqi Bing ◽  
Daozhuo Jiang ◽  
Yiqiao Liang ◽  
Chongxi Jiang ◽  
Tianxiang He ◽  
...  
Keyword(s):  
Working Conditions ◽  
Simulation Analysis ◽  
Active Power Filter ◽  
Active Power ◽  
System Model ◽  
Conventional Model ◽  
Shunt Active Power Filter ◽  
Stability Problems ◽  
Power Filter ◽  
Hybrid Controller

The interactions between shunt active power filter (APF) and capacitance load tend to result in stability problems and resonance. The conventional model of a shunt APF is not precise enough to reflect this phenomenon. To address it, this paper proposes a modified shunt APF system model to accurately reflect various stability problems. This paper also studies the mechanism of positive feedback resonance brought by capacitance load and proposes a modified hybrid controller to improve the stable margin of the system, making the shunt APF work stably under different working conditions where there are μF capacitors on the demand side. The correctness and validity of the proposed strategy are verified by simulation analysis and prototype experiments.

A PV-Active Power Filter Interface Scheme for Three Phase Balanced System

2020 ◽  
Vol 46 ◽  
pp. 125-145 ◽  
Author(s):  
Abdeldjalil Slimani ◽  
Mohammed Nacer Tanjaoui ◽  
Abdelkader Boutadara ◽  
Lakhdar Saihi ◽  
Nadjem Bailek ◽  
...  
Keyword(s):  
Fuzzy Controller ◽  
Digital Simulation ◽  
Active Power Filter ◽  
Active Power ◽  
Active Filter ◽  
Software Environment ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Instantaneous Power ◽  
Hybrid Controller

This paper presents a modified hybrid Controller based on instantaneous power-fuzzy controller (IPFLC) for a shunt active power filter (SAPF). The current produced by the AC source is polluted by harmonics injected by the non-linear loads. The supply system requires filtering by suppressing harmonic currents to improve power quality at interface bus. The filtering system consists of an LC filter and a SAPF. The proposed IPFL Controller for the SAPF is based on a combination of the p-q instantaneous power and the fuzzy logic strategy. In this part, two cases are studied, first the active filter is connected only to a capacitor by its dc side, and second case where the active filter is connected to a photovoltaic source or to a battery. The effectiveness, robustness and the dynamic speed of the proposed controller is validated and assessed using dynamic digital simulation. Digital Simulation results validated also the effectiveness of the active filter scheme with modified controller in reducing the source current THD from 25.87% to 0.83% which largely meets the standards of IEEE STD and International Electro-technical Commission (IEC). Digital Simulation and validation used MATLAB-SIMULINK Software Environment.

scholarly journals Hybrid Controller with Fuzzy Logic Technique for Three Phase Half Bridge Interleaved Buck Shunt Active Power Filter

2020 ◽  
Vol 53 (2) ◽  
pp. 13418-13423
Author(s):  
S. Echalih ◽  
A. Abouloifa ◽  
J.M. Janik ◽  
I. Lachkar ◽  
Z. Hekss ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Active Power Filter ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Hybrid Controller ◽  
Three Phase ◽  
Fuzzy Logic Technique
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