Majlesi Journal of Mechatronic Systems <p>The scope of MJMS is ranging from mathematical foundation to practical engineering design in all areas of mechatronic systems. The editorial board is international and original unpublished papers are welcome from throughout the world. The journal is devoted primarily to research papers, but very high quality survey and tutorial papers are also published.</p> <p>There is no publication charge for the authors.</p> Majlesi Publications Corporation en-US Majlesi Journal of Mechatronic Systems 2423-5334 Power Quality Improvement in Variable Speed Drive Systems VSDS with 12-Pulse Rectifier Topology for Industrial Applications <p><strong>This paper discusses improving the qualifying conditions for feeding grids using four-quadrant chopper in dc-link for a 12-pulse diode bridge rectifier variable speed drive system VSD<sub>S</sub>. This includes reducing the ripple and crest factors for voltage and current waves in dc-link.</strong></p> <p><strong>Variable speed drive system with a 12-pulse diode bridge rectifier has been modeled and simulated; the results demonstrating the ability of the proposed chopper to improve power quality in modern industrial facilities were discussed.</strong></p> <p><strong>KEYWORDS: Four-Quadrant Chopper, Variable Speed Drive System VSDS, 12-Pulse Rectifier, Power Quality, Industrial Facilities, Dc-Link.</strong></p> <p>&nbsp;</p> Safwan Mhrz Nadweh Ghassan Hayek Bassam Atieh ##submission.copyrightStatement## 2019-04-02 2019-04-02 8 2 A comparative study between FSMC and FSOSMC strategy for a DFIG-based wind turbine system <p class="Abstract"><span style="font-size: 10.0pt; font-family: 'Times New Roman','serif';" lang="EN-US">This paper presents a modelling and sliding mode control (SMC) of a doubly fed induction generator (DFIG) integrated into wind turbine system (WTS) for independent control of reactive and active stator power. For a comparative study, the independent control of reactive and active stator power is ensured in the first step by fuzzy sliding mode controller (FSMC) and the second step by fuzzy second order sliding mode controller (FSOSMC). Finally, the performance of the system is tested and compared by simulation in terms of robustness and reference tracking based on Matlab / Simulink software.</span></p> Habib BENBOUHENNI ##submission.copyrightStatement## 2019-04-02 2019-04-02 8 2 Generalized Projective Synchronization of fractional-order Hyperchaotic Lu and Hyperchaotic Cai system via Active Control <p>This paper studies the design of feedback controllers to achieve generalized projective synchronization (GPS) between two fractional derivative order hyperchaotic Lu systems (similar),and between hyperchaotic Cai system and fractional-order hyperchaotic Lu system (dissimilar). First, new sliding surface is defined for GPS of fractional-order Lu-Lu and Lu-Cai systems. Then the results of the GPS achieved in this article is proved using Lyapunov stability theorem. Without using Lyapunov exponents, the active feedback control method to achieve GPS of fractional-order hyperchaotic Lu-Lu and Cai-Lu is calculated. Performance of the proposed method is shown, using numerical simulations.</p> Saeed Balochian ##submission.copyrightStatement## 2019-04-02 2019-04-02 8 2 An Integrated Buck Boost Series Parallel Fly-back converter for R-Load <p><img src="/ms/index/public/site/images/nagapooja/abstarct_image.jpg"></p> Naga Pooja Vuyyuru ##submission.copyrightStatement## 2019-05-12 2019-05-12 8 2 New Configuration of a DVR based on Seven-Level Packed U-Cell Inverter to Improve Power Quality in Electrical Distribution Grids <p>This paper proposes the mitigation of grid voltage disturbances using a 7-level Packed U Cells (PUC7) based dynamic</p> <p>voltage restorer (DVR) solution<strong>.</strong> Which regulates the injection of the compensation voltage in series and synchronism with the grid during the voltage disturbance events, the auxiliary capacitor voltage, while controlling the PUC7 output current. A Seven-Level Packed U Cells (PUC7) inverter is composed of a smaller number of IGBTs and circuitry compared to similar structures. A voltage balancing controller is designed to apply the seven levels of the inverter; this is done by regulate the output voltage of the DC capacitors to a desired value in order to obtain seven levels at the output of the inverter. This feature enables the structure to be used to compensate for the power quality of power distribution networks. Nearest Level Control (NLC) in the inverter is used to create the desired waveform. The &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In-Phase control method is selected to control the proposed DVR and use the synchronous reference frame (SRF) method to detect the network voltage fluctuations. To verify and validate the proposed DVR performance, simulations are carried out in the MATLAB / SIMULINK software environment, and the results indicate the optimal performance and desirability of the proposed DVR to compensate for the voltage sag, swell and flicker power distribution grids. Theoretical analysis and simulation results are given to show the high performance of the proposed solution</p> Ehsan Akbari ##submission.copyrightStatement## 2019-05-12 2019-05-12 8 2