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All Journal International Journal of Applied Power Engineering (IJAPE)
Allali Ahmed
University of Sciences and Technology of Oran
Electrical & Electronics Engineering

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Dynamic voltage restorer using sliding mode controller: Experimental studies Toumi Toufik; Benabedellah Abdelkader; Abdelkhalek Othmane; Allali Ahmed; Benhamou Aissa; Hafsi Oussama
International Journal of Applied Power Engineering (IJAPE) Vol 10, No 4: December 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.151 KB) | DOI: 10.11591/ijape.v10.i4.pp337-346

Abstract

The simulation and implementation of a sliding mode control strategy for a single-phase dynamic voltage restorer (DVR) to mitigate load voltage sag swell and harmonics is presented in this work. The control strategy's goal is to compensate for the required voltage by regulating the DVR's voltage via an injection transformer while keeping the load voltage constant. The ability of the DVR to achieve a good performance greatly depends on its control strategy. The controller used in this work is based on SMC theory, which consists of creating a passivation output and a storage function to use as a function of Lyapunov. The proposed control scheme of the DVR is initially evaluated in simulations using MATLAB and validated using a laboratory-scale prototype of the entire system, including a source, the DVR circuit and a load. The control scheme is implemented on a dSPACE 1104 board and the MATLAB real-time toolbox. Both the experimental results have demonstrated the effectiveness the proposed control strategy of DVR in mitigating power qualities issues and therefore enhancing the performance of the network.
Control DC link of single-phase dynamic voltage restorer Toumi Toufik; Allali Ahmed; Abdelkhalek Othmane; Soumeur Mohammed Amine; Nasri Abdelfatah
International Journal of Applied Power Engineering (IJAPE) Vol 9, No 3: December 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1254.098 KB) | DOI: 10.11591/ijape.v9.i3.pp297-304

Abstract

This paper is aimed to illustrate and expose the performance of single-phase voltage dynamic voltage restorer (DVR) control connected to the electrical distribution grid. This performance is easily expressed by compensating for the sags and the swells voltages, and regulating the voltage across the load by injecting a voltage component in series with the source voltage increased or decreased with respect to the source voltage the load-side waveforms are purely sinusoidal. The integration of serial and chopper converters makes the DVR capable of bidirectional power flow. The key to this topology is its ability to compensate for sagging and swelling of the voltage in the long run. The modeling of the DVR and the design of its controller is included in this document. Effectiveness of control systems and start-up sequence of DVR operation is verified by detailed simulation studies. The control method used in this work is based on the use of a booster chopper and two cascade loopsto generate the PWM command to control the chopper. The effectivenessof the suggested method is confirmed by the MATLAB/SIMULINK® simulation results and some prototype experiments. These results showthe capacity of the proposed DC link control.
Co-Authors Abdelkhalek Othmane Benabedellah Abdelkader Benhamou Aissa Hafsi Oussama Nasri Abdelfatah Soumeur Mohammed Amine Toumi Toufik