2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)最新文献

{"title":"An Efficacious MRI Sparse Recovery Method Based on Differential Under-Sampling and k-Space Interpolation","authors":"Henry Kiragu, E. Mwangi, G. Kamucha","doi":"10.1109/MELECON48756.2020.9140563","DOIUrl":"https://doi.org/10.1109/MELECON48756.2020.9140563","url":null,"abstract":"A proposed method that reduces the lengthy scan time characterizing Magnetic Resonance Imaging (MRI) is presented in this paper. The method also improves the robustness to noise and reconstruction artifacts associated with conventional MRI. It employs a differentially structured k-space under-sampling technique to reduce the imaging time. The under-sampled k-space is then interpolated using a bicubic method in order to obtain an estimate of the part of k-space that is not acquired in the under-sampling step. The interpolation improves the resilience of the proposed procedure to noise and reconstruction artifacts. The method exploits the sparsity of MR images in the wavelet transform domain to reconstruct the images from the interpolated k-space using a greedy Compressive Sampling (CS) method. The Peak Signal to Noise Ratio (PSNR) and the Structural SIMilarity (SSIM) objective quality metrics are used to evaluate the performance of the proposed method in comparison to other reported CS based MRI methods. Computer simulation experimental results reveal that the proposed method exhibits better robustness to noise by a 1.6 dB PSNR improvement and an imaging acceleration of at least 9% while maintaining image quality.","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123172357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Discrete Event Controllers for Grids` Lines","authors":"Ciufudean Calin, Buzduga Corneliu","doi":"10.1109/MELECON48756.2020.9140707","DOIUrl":"https://doi.org/10.1109/MELECON48756.2020.9140707","url":null,"abstract":"Deadlock avoidance of energy delivery through lines with shared resources, such as green energy grids, is an actual, but hard task. We use Petri nets for modeling the controllers of energetic lines capable to provide a restrictive policy which prevents deadlocks in the system. Dealing with Petri net formalism is a versatile and user friendly way for implementing a certain model, concerning the process of model’s simulation before building it. A difficult problem when dealing with Petri nets modeling and simulation concerns system’s reversibility in order to ensure the system`s recoverability from deadlock or failure states. Therefore in this paper we propose an approach by using qualitative formalisms for avoiding the bottlenecks of the Petri net model without losing the desired properties for real system. An example illustrates our approach.","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117354159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Polygon Connected ATRU for the More-Electric Aircraft","authors":"D. Farrugia, M. Apap, A. Micallef, C. Staines","doi":"10.1109/MELECON48756.2020.9140490","DOIUrl":"https://doi.org/10.1109/MELECON48756.2020.9140490","url":null,"abstract":"Due to the continuous growth in air traffic, the concept of a More Electric Aircraft (MEA) is gaining importance. The aim of the MEA is to increase the electric load in an aircraft and eliminate traditional loads such as the mechanical, hydraulic and pneumatic loads. For this reason, this type of aircraft introduces several advantages such as weight reduction, reduction in fuel consumption and lower maintenance costs. In a MEA, several converters are required in order to obtain different voltage levels in the aircraft. This paper considers the operation of the Autotransformer Rectifier Unit (ATRU) for an Airbus A380 which converts 115V AC to 270V DC. A 12-pulse ATRU for a MEA was designed, modelled in Simulink/PLECS. Simulation results are given to validate the operation of the designed ATRU.","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125806792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimal Scheduling of a Virtual Power Plant with Demand Response in Short-Term Electricity Market","authors":"Homa Rashidizadeh-Kermani, Mostafa Vahedipour-Dahraie, M. Shafie‐khah, G. Osório, J. Catalão","doi":"10.1109/MELECON48756.2020.9140502","DOIUrl":"https://doi.org/10.1109/MELECON48756.2020.9140502","url":null,"abstract":"This paper presents an optimal bidding and offering strategy for a virtual power plant (VPP), which participates in day-ahead (DA) and balancing markets. The VPP comprises distributed energy resources, plug-in electric vehicles (PEVs) and flexible demands. The objective of the problem is maximizing the VPP’s profit while demand response (DR) providers who aggregated the loads try to supply the required demand under their jurisdiction with minimum costs. The proposed optimization problem is formulated as a bi-level stochastic scheduling programming to address uncertainties in DA and balancing electricity prices, renewable energy source’s (RES) and DR relationship. Simulation results demonstrate the applicability and effectiveness of the proposed model to any real markets. Also, numerical results show that the flexibility of responsive loads and PEVs can improve the VPP operator's energy management and increase its expected profit.","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126764913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Attention-based Model for Evaluating the Complexity of Sentences in English Language","authors":"Daniele Schicchi, G. Pilato, Giosuè Lo Bosco","doi":"10.1109/MELECON48756.2020.9140531","DOIUrl":"https://doi.org/10.1109/MELECON48756.2020.9140531","url":null,"abstract":"The automation of text complexity evaluation (ATCE) is an emerging problem which has been tackled by means of different methodologies. We present an effective deep-learning-based solution which leverages both Recurrent Neural and the Attention mechanism. The developed system is capable of classifying sentences written in the English language by analysing their syntactical and lexical complexity. An accurate test phase has been carried out, and the system has been compared with a baseline tool based on the Support Vector Machine. This paper represents an extension of a previous deep learning model, which allows showing the suitability of Neural Networks to evaluate sentence complexity in two different languages: Italian and English.","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126929312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An advanced numerical treatment of EM absorption in human tissue","authors":"G. Ala, E. Francomano, Monica Millunzi, M. Paliaga","doi":"10.1109/MELECON48756.2020.9140687","DOIUrl":"https://doi.org/10.1109/MELECON48756.2020.9140687","url":null,"abstract":"The numerical computation of local electromagnetic absorption at points within the human tissue is proposed by avoiding the mesh generation in the problem domain. Recently, meshless numerical methods have been introduced as an alternative computational approach to mesh based methods. This is an important feature to generate competitive procedure able to provide final evaluations for large data amounts in real time. In this paper the smoothed particle hydrodynamics method is considered to compute the electromagnetic absorption. First experiments are performed in two dimension at single frequencies by considering incident TM plane wave on 2D cylinder simulating a simplified model of human torso. Changes on tissue electrical properties are considered assessing the numerical approach.","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124672060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Heating & Current Drive System of Divertor Tokamak Test (DTT)","authors":"G. Granucci, G. Ravera, A. Bruschi, S. Ceccuzzi, P. Agostinetti, S. Garavaglia, A. Romano, A. Ferro","doi":"10.1109/MELECON48756.2020.9140677","DOIUrl":"https://doi.org/10.1109/MELECON48756.2020.9140677","url":null,"abstract":"Appropriate disposal of the non-neutronic energy and particle exhaust in a reactor is universally recognized as one of the high priority challenges for the exploitation of fusion as an energy source. The Divertor Tokamak Test (DTT) facility will be built to study a solution suitable for the power exhaust in conditions relevant for DEMO. The tokamak will reach the needed condition of 15 MW/m power flow to the divertor by coupling up to 45 MW of additional power to the plasma. The selected Heating Systems to achieve this goal are Electron Cyclotron Heating (ECH), Ion Cyclotron Heating (ICH) and Negative Neutron Beam Injector (NNBI). The power systems will be installed in two stages: at a first stage 16 MW of ECRH power, 3 MW of ICRH and one 7.5 MW NNBI injector will be installed, making the DTT plasma suitable for relevant experiment at 6T, 4MA configuration. The EC system relies on a 170 GHz, 1 MW gyrotron, similar to those developed for ITER, while for the power transmission a Quasi Optical approach has been chosen, where a multi-beam mirrors will be installed under vacuum to reduce the overall transmission losses below 10%. The power will be injected exploiting independent front-steering antennas capable to steer in real-time all the beams. The module of the ICRH system will be based on transmitters, capable of a wide frequency range (60-90 MHz), connected to two movable antennas inserted in the equatorial ports of DTT. The choice of the antenna type will be based on reliability (i.e. power density) rather than on its performance in terms of peak coupled power. Fast variations of the antenna loading, as the one expected in presence of ELM, will be compensated exploiting an external matching system. The NNBI will be based on two RF plasma sources capable to produce a negative ion current that will be accelerated by a grids system up to 400 keV. The designed injector will reflect the experience gained in SPIDER and MITICA, with modifications aiming to a simplified and well performing system. The paper describes the main characteristics of the design of DTT additional heating system, that will be one of the most powerful between the tokamaks of the next generation.","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129290104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MELECON 2020 Copyright Page","authors":"","doi":"10.1109/melecon48756.2020.9140500","DOIUrl":"https://doi.org/10.1109/melecon48756.2020.9140500","url":null,"abstract":"","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114233507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-powered wireless IoT nodes for emergency management","authors":"M. Merenda, R. Carotenuto, F. D. Della Corte, Filippo Giammaria Praticò, R. Fedele","doi":"10.1109/MELECON48756.2020.9140503","DOIUrl":"https://doi.org/10.1109/MELECON48756.2020.9140503","url":null,"abstract":"Expected and unexpected events affect road infrastructure leading to several issues that require maintenance interventions or prompt actions. In order to face the issues mentioned above, specially designed platforms can be used. Despite the high number of solutions presented in the last decades, it is difficult to find real applications of systems deputed to the emergency management of the abovementioned infrastructures. This paper aims at describing an innovative platform and the results of its first application. The platform consists of a system and algorithms that allow environmental and structural monitoring and emergency management. The proposed system consists of a network of wireless sensor nodes that are self-powered by mean of photovoltaic energy harvesters. Two different types of algorithms were designed to monitor the environmental and structural condition (i.e., the vibro-acoustic signature) of different types of structures and infrastructures, and to display, thanks to a dashboard, several predefined alarms, escape routes, safe place, and gathering points. The results presented in the paper refers to the first application of the platform, here tailored for an Italian theme park in the framework of the project \"SICURVIA\" funded by Regione Calabria, Italy. These results, presented for the first time, show that the platform is able to extract crucial information about the conditions of the thematic park’s assets, and, at the same time, this information are used to recognize an emergency, trigger the related alarm, and provide a plan to manage the extraordinary event happened.","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130242735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MELECON 2020 Program","authors":"","doi":"10.1109/melecon48756.2020.9140465","DOIUrl":"https://doi.org/10.1109/melecon48756.2020.9140465","url":null,"abstract":"","PeriodicalId":268311,"journal":{"name":"2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)","volume":"167 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131521054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}