Majlesi Journal of Mechatronic Systems http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms <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 The editorial board is international and original unpublished papers are welcome from throughout the world.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> en-US ashourian@iaumajlesi.ac.ir (Dr. Mohsen Ashourian) mjee@iaumajlesi.ac.ir (Ahmadreza Tabatabaeian) Fri, 27 Sep 2019 08:28:05 +0000 OJS 3.1.0.1 http://blogs.law.harvard.edu/tech/rss 60 Fuzzy speed controller of induction machine with 36 sectors DTC based ANFIS hysteresis comparator http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/404 <p>In this work, a direct torque control (DTC) with 36 sectors of the induction motor (IM) drive controlled by intelligent regulators is proposed. The proposed command scheme uses the electromagnetic torque errors through an adaptive neuro-fuzzy inference system (ANFIS) and the classic PI speed regulator based the fuzzy logic (FL) regulator. Simulation results by using ANFIS regulator and FL regulator are compared with those of the conventional DTC with 36 sectors. The comparison results of DTC command with intelligent regulators illustrate the reduction in the electromagnetic torque, total harmonic distortion (THD) value of stator current and stator flux ripple and the validity of the proposed control is confirmed by the simulation results.</p> Habib BENBOUHENNI ##submission.copyrightStatement## http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/404 Sat, 14 Sep 2019 00:00:00 +0000 An Investigation into the Effect of Non-segmented Rotor on the Torque of an Outer Rotor Switched Reluctance Motor for In-wheel Electric Vehicle Application http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/405 <p class="MJEE-Abstract">High torque electric machines have found numerous applications in the industry such as electric vehicle applications. With common optimization of the structure of the electric machines, it is not possible to achieve a considerable increase in the torque-producing capability of the machine. Hence, appropriate solutions for increasing the machine torque should be searched by proposing a different structure and focusing on the exact analysis of the machine forces. A deep knowledge on the electromechanical energy conversion process and the distribution of the force’s components will allow designing a high torque density electric machine can be developed. Accordingly, in this paper, a double-stator switched reluctance motor is analyzed, firstly. Then, based on the analysis, a high torque switched reluctance machine titled “outer rotor switched reluctance machine” for the in-wheel electric vehicle is designed. Finally, the effect of non-segmented rotor is examined. Simulation is done by finite element method (FEM) in the MAGNET software.</p> Vahid Hanaeinejad, Mohammadali Abbasian, Milad Dolatshahi ##submission.copyrightStatement## http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/405 Sat, 14 Sep 2019 00:00:00 +0000 Harmonic Mitigation in Iron and Steel Plants http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/407 <p>Electrical power quality defines the health of power system which includes voltage and current quality, reliability of power supply and maintaining sinusoidal nature of waveform. Voltage flickers and fluctuations, poor power factor and harmonics are the most common power quality issues in steel producing plants due to Electric Arc Furnace (EAF), electrical drives and welding machines. Non-linear characteristics of EAF are the major sources of power quality issues that mainly include harmonic production and large reactive power variations. In this paper, harmonic analysis is carried out in steel plant. The measured harmonics crosses the permissible IEEE standard limit. Shunt Passive filter is designed in proposed work for reducing harmonics mainly focusing on dominant 5<sup>th</sup> and 7 th Harmonics. The performance of passive filter with EAF is simulated in MATLAB as well as CYME software. Hardware and software results are also presented in this proposed work<strong>.</strong></p> VAIJU NAGO KALKHAMBKAR ##submission.copyrightStatement## http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/407 Sat, 14 Sep 2019 00:00:00 +0000 Designing a Filter for Nonlinear Loads by Reduction of Harmonic Distortions http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/411 <p>This paper presents a design model and power filter improvement to deal with the issues of power quality such as harmonics distortions and reactive power alternating current in nonlinear loads.&nbsp;Filters are applied to compensate harmonics reduction and reactive power management. In this paper, correction of distortions caused by nonlinear loads is focused by means of designing a proposed filter. This work is along with calculating capacitor characteristics which is required from impedance quantities. The current research has shown that using filters will reduce harmonic distortions from 17% to .69% leading to power quality enhancement in power electricity network.</p> Farhad Daneshi, Alireza Tavakoli ##submission.copyrightStatement## http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/411 Fri, 27 Sep 2019 00:00:00 +0000 Review of DC Microgrid system with Various Power Quality Issues in “Real Time Operation of DC Microgrid Connected System” http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/410 <p>This paper presents an overview of the various microgrid architectures of DC microgrid and power quality issues including harmonic currents, inrush currents, bus fault ,circulating currents and grounding of the system. A microgrid utilizing a DC bus can avoid various power conversion steps, and hence minimize the loss incurred as compared to AC bus. The high frequency semiconductor devices with greater voltage blocking capacities are essential components of DC microgrid. With the advent of new power electronic devices and circuits, the practical implementation of DC microgrid still suffers from various power quality issues and device limitations. This paper investigates and compares the power loss and harmonics for different semiconductor devices with the help of MATLAB and the experimental findings indicate that SiC device implementation significantly increases energy efficiency and enhances microgrid power quality.</p> ILA RAI, S Ravishankar, Anand R ##submission.copyrightStatement## http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/410 Fri, 27 Sep 2019 00:00:00 +0000 An Improved Method of Static Code Analysis Based on the Context-Sensitive Rules http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/406 <p>One of the static test methods is static code analysis, which is to analyse the source code by specific tools without running the code. This method tries to detect possible code vulnerabilities by techniques such as data analysis and flow analysis. Static code analysis contains limitations, one of which is the vulnerability report if it is not. This paper focus is on reducing these false reports, which have been dealt with in many ways. Our method is to have a list of code analysis rules and to examine for each context the rules in that context, as a result of which all the rules are not analysed by the code analyser. For example, for security analysis, we just focus on security rules, not design or other rules. So we reduce the error messages by applying filters to the entire rules.</p> Sepideh Mohajer Naraghi, Mir Ali Seyyedi ##submission.copyrightStatement## http://journals.iaumajlesi.ac.ir/ms/index/index.php/ms/article/view/406 Sat, 14 Sep 2019 00:00:00 +0000