Browsing by Author "Habi, Idir"

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    APF Applied on PV Conversion Chain Network Using FLC †
    (MDPI, 2023) Bourourou, Fares; Tadjer, Sid Ahmed; Habi, Idir
    This paper focuses on regulation of the parallel active power filter (APF) Dc Voltage bus by judicious choice of rule bases and intervals for each selected fuzzy variable of suitable fuzzy logic controller. In addition, an algorithm describes the main steps for designing an FLC that has any number of rules with direct application to the APF capacitor voltage regulation. Where their simu- lation, by MATLAB, applied to PV conversion chain network will be represented in the booths cases, constant and variable non-linear loads after modeling, to show the effectiveness of this kind of reg- ulators on electrical power quality and improve the reliability of the APF on PV system. The deliv- ered voltage of PV plant has been regulated and controlled with MPPT using P&O technique and FLC regulator after modeling of each part of the conversion chain. PV plant supplies a nonlinear load from the rectifier installed on the output of the conversion chain via a controlled power inverter. A 3 × 3 rules fuzzy regulator is implanted in the control part of the APF to examine the influence of the FLC on the produced electrical power quality. Simulation results are represented and analyze
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    Direct components extraction of voltage in photovoltaic active filter connected in a perturbed electrical network (based on robust PLL algorithm)
    (2015) Tadjer, Sid Ahmed; Habi, Idir; El Ganaoui, Mohamed; Scipioni, Angel
    The quality and performances of the compensation of harmonic currents depends strongly on the performances of the identification blocks of control side of the photovoltaic generators used as active filters. Then, the use of harmonics identification methods is not valid because the network voltage must be sinusoidal and balanced, which is not the case in practice. Hence, to make the application of the identification methods of harmonic currents versatile and for any voltage form, we use the detection system of the fundamental component of the direct voltage. In this paper, a comparison between the conventional method used for extracting the direct component of the network voltage which is based on the phase-locked loop (PLL) and the new approach based on a multivariable extraction filter. Finally, simulation results show that the proposed multivariable filter may better work even if the network voltage is (perturbed and unbalanced). Furthermore, this filters permits to generalize the use of identification methods for filtering the different perturbations of active and reactive current.
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    Fuzzy logic control of a 400 KV transmission line by a statcom based on NPC multilevel voltage inverters
    (Centre for Info Bio Technology (CIBTech) (Regd, 2024) Boukarana, Leila; Fellag, Sid Ali; Habi, Idir
    Recent developments in power systems mean that it will be increasingly difficult to reliably control power transfers in highly interconnected systems using traditional slow response time control systems such as phase- shifting transformers and passives shunts or series compensators. This has recently led to studies of a new generation of FACTS (Flexible AC Transmission System) control devices, using new power static components that can control both opening and closing: a FACTS device. This paper introduces the STATCOM, a power device reliant on a semiconductor power switches for controlling electrical networks. It serves to enhance the regulation of both active and reactive power transmitted through power lines. Specifically, the STATCOM compensates the reactive energy of the lines, maintains the voltage levels at the bus bars and enables the power source to operate with a unity power factor. After a concise introduction to the operating principle of the STATCOM, a model is presented featuring key control loops including Phase-Locked Loop (PLL), DC bus voltage control, and power control. Linear controllers (Proportional Integral PI) are used and an approach using Fuzzy Logic Controllers (FLC) is tested. Simulation results for a 400 kV line conducted within the Matlab/Simulink environment are presented, providing a comparative analysis and discussion on the effectiveness of the adopted control strategies in addressing both dynamic and static aspects of the