Majlesi Journal of Energy Management <p>The scope of MJEM is ranging from mathematical foundation to practical engineering design in all areas of energy management. The editorial board is international and original unpublished papers are welcome from throughout the world.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> <p><strong>Peer Review Process</strong></p> <p>Upon receipt a manuscript, the following process will be conducted. The submission will be checked to be within the scope of the journal. Articles which are not within the MJEM Scope will be rejected. The format of the paper will also be checked to obey the MJEM MSWord template. Also, the authors are required to submit an MSWord copy of their manuscript. Failing to do so, will result in immediate reject. The manuscript is then checked by a plagiarism detector tool. All submissions with more than 25% similarity reported by the tool will be rejected immediately.</p> <p>MJEM publishes only peer-reviewed papers. The editor-in-chief assigns each submitted manuscript to a Section Editor, who will rely on at least two anonymous reviewers to decide on the acceptance of the paper, on mandatory modifications, or rejection of the paper. The Author is responsible for checking the galley proofs prior to publication. The review process may take approximately two ~three months to be completed. Targeted publication time is six months from the end of the month in which the manuscript is received, provided that the author responds immediately to all communications. All judgments and findings in the peer-review process are objective. Upon assignment, each reviewer must state that he/she has no conflict of interest. They also point out any relevant published work which is yet to be cited.</p> <p><strong>Open Access Policy</strong></p> <p>The journal provides readers with immediate free access to all published content.</p> <p><strong>&nbsp;</strong></p> <p><strong>Publication Schedule</strong></p> <p>MJEM publishes quarterly in on the first of March, June, September, and December.</p> <p>&nbsp;</p> <p><strong>Publication Fee</strong></p> <p>There is no publication fee for publication in MJEM.</p> <p><strong>&nbsp;</strong></p> <p><strong>Copyright and access</strong></p> <p>The journal provides readers with immediate free access to all published content.</p> <p>All volumes are available for free and all articles are accessible in PDF format. The journal does not publish any hard copy of the issues.</p> <p>During the submission process, the authors will be asked to electronically sign a Transfer of Copyright. This will give the MJEM the right to publish the article and to take action in the case of improper use. Note that the purpose of transfer of copyright is not to prevent the authors to reuse their works nor to forbid to distribute their published articles in anyway except republications in other journals, conferences, books, and other resources.</p> <p>&nbsp;</p> <p><strong>Conflict of Interest:</strong></p> <p><strong>Obligations of Authors</strong></p> <p>The authors must report all sources of funding for the research presented. This include any kind of financial support, supply of equipment or materials, and other types of support.</p> <p>If there are no conflicts, the authors will be asked to electronically sing that "The authors declare that there are no conflicts of interest related to this article."</p> <p>It is the responsibility of the Corresponding Author to assure that each Co-author is aware of this Policy and to ensure that all required funding and disclosure information is included for all authors.</p> <p>Authors are obliged to submit a correction if a previously unrecognized conflict of interest is discovered after publication. In case of any misconduct, the paper will be rejected and will be deleted from the journal archive. All authors will become deprived of making any new submission.</p> <p><strong>Obligations of Section Editors and Reviewers</strong></p> <ul> <li class="show">Section Editors/Reviewers are responsible to report any conflicts of interest, and avoid cases in which such conflicts prevent an objective evaluation.</li> <li class="show">If a submission competes with the research of a section editor/reviewer such that the review process cannot be handled objectively in the section editor's opinion, she/he must decline responsibility for that particular case.</li> <li class="show">Article submissions from section editors are managed directly by the editor in chief and she/he ensures no details of the review process, other than those available to all authors, are accessible to the section editor.</li> </ul> <p>&nbsp;</p> <div id="custom-0"> <h3>Indexing</h3> <p>Google Scholar</p> <p>DOAJ</p> <p>Copernicus</p> <p>&nbsp;</p> </div> <div id="custom-1">&nbsp;</div> <div id="sponsors"> <h3>Sponsors</h3> <ul> <li class="show"><a href="">Islamic Azad University, Majlesi Branch</a></li> </ul> </div> en-US (Dr. Amir Hossein Zaeri) (Behzad Aghababae) Sun, 01 Dec 2019 00:00:00 +0000 OJS 60 Capacitor Switching-based High-Gain Boost Chopper Converters Analysis <p><strong>Renewable energy resources such as photovoltaic systems are a promising way to meet the nowadays energy demand.&nbsp; In this paper, a novel non-isolated DC-DC boost converter is proposed to be used in photovoltaic systems. Since photovoltaic systems have low voltage gain, it is required to utilize a converter with high gain, low cost, and high efficiency. Thus, the proposed converter is of an additive boost converter with a switched inductor. With an appropriate duty cycle and low-voltage pressure in power switch, this converter obtains high voltage gain. Additional stored energy in the inductor may be eliminated in the output capacitor.&nbsp;&nbsp;&nbsp;&nbsp; </strong></p> Bahman Taheri, Gholamreza Aghajani, Mahsa Sedaghat, Shokoufeh Sharifi, Milad Teimourian ##submission.copyrightStatement## Sun, 01 Dec 2019 00:00:00 +0000 Analysis of Wind Behavior in Openings by CFD, in order to Enhance Natural Ventilation in Residential Buildings Design of Moderate and Humid Climate (Case of Study: City of Gorgan) <p>Today, increasing environmental pollution due to the use of fossil fuels to provide thermal comfort is one of the problems of this area. The amount of these contaminants in residential buildings are more tangible. By referring to the traditional architecture, it can be seen that natural ventilation was provided by using natural forces (in this article: wind). Therefore, it can be concluded that the proper use of effective elements on natural ventilation can solve the problems created by air conditioning in new buildings. This article was identified different models of locating of openings in buildings (city of Gorgan) and analyzed the wind behavior in each of these models in terms of natural ventilation and finally, the optimal model for natural ventilation was selected. In this article, qualitative research methodology to identify and study the methods of using wind in vernacular habitats was used firstly. Then by CFD modeling and choosing selected models in terms of location of openings in order to improve the natural ventilation, Wind behavior analysis in these models was performed by the simulation research method (Gambit 2.4.6 software for making model geometry and creating grid mesh and ANSYS FLUENT 15 for wind behavior analysis). As a result of analyzes, models that had northeastern-southwest direction, more openings in the southwest elevation and the suction window in the opposite direction were selected as the optimal model for residential buildings in city of Gorgan.</p> Fatemeh Rezaei, Mostafa Mahmoudi ##submission.copyrightStatement## Sun, 01 Dec 2019 00:00:00 +0000 A Full Range Permanent Magnet Synchronous Motor Position and Speed Estimation using Adaptive Non-singular Fast Terminal Sliding Mode Observer <p>Full range speed and position estimation of permanent magnet synchronous motors is a challenging task. In this paper, a nonsingular terminal sliding mode observer is proposed for fast and precise estimation of speed and position. It is shown that adaptive gain in proposed method not only helps to reduce chattering problem in low speed range considerably but also decreases estimation error in nominal speed. Furthermore, in order to accurately estimate the rotor position in the reverse speed, a quadrature-component-based phase lock loop is utilized instead of <em>arctan</em> function. Finally, to illustrate effectiveness of proposed method, simulation results using MATLAB/SIMULINK is provided</p> Sajad Saberi, Behrooz Rezaie ##submission.copyrightStatement## Sun, 01 Dec 2019 00:00:00 +0000 A New High Efficiency High Step Up Converter with Coupled Inductor and Switched Capacitor <p>Incremental converters are nowadays widely used in new energy systems because new energy systems such as photovoltaic, fuel cell, etc have low output voltage and need to be increased to the desired level to connect these systems to the global electricity grid; DC-DC converter converters have played a prominent role, but these converters have to incur significant losses to the system and, on the other hand, operate under the input-to-output variations, so the switchers were considered soft switches. In this study, a non-isolated booster converter with soft switching voltage gain-raising technique was designed. This converter has a switch that is controlled by the Pwm signal. The benefits of this converter include reduced switching losses, simplicity of operation, provision of soft switching and low voltage stress; an active clamp is used to provide soft switching for multiple voltage elements and back cells to maximize gain and input. The converter used an auxiliary branch to increase the gain instead of using the output inductor at the input, and in addition an inductor was used as a filter inductor to reduce the input ripple. This converter has six states. The switches are switched on under zvzcs and switched off under zvc conditions.</p> A. Teimori, Majid Delshad ##submission.copyrightStatement## Sun, 01 Dec 2019 00:00:00 +0000 Reducing Current and Torque Ripples in DVC Control of DFIG Operation at Constant Switching Frequency for Wind Generation Application <p>This research work presents a new seven-level space vector pulse width modulation (SVPWM) based on fuzzy logic&nbsp; (FL) of the doubly fed induction generator (DFIG) integrated in a wind turbine system is presented. The classical direct vector control (DVC) using conventional proportional-integral (PI) controller presents considerable active and reactive power ripples. In order to ensure a robust DVC control scheme for the DFIG-rotor side converter and reduces reactive power ripple, harmonic distortion of rotor current, electromagnetic torque ripples and active power ripples, a DVC based on seven-level fuzzy space vector modulation (FSVPWM) technique is used in this article. Simulation results show the efficiency of the proposed method of control especially on the quality of the provided power comparatively to a DVC with classical SVPWM strategy of seven-level inverter.</p> Habib Benbouhenni ##submission.copyrightStatement## Sun, 01 Dec 2019 00:00:00 +0000