2018 AEIT International Annual Conference最新文献

{"title":"Smooth Super Twisting Sliding Mode Control Based Stabilization for Nonholonomic Mechanical Systems: A Firetruck Example","authors":"W. Abbasi, Ibrahim Shah, F. Rehman, Nazim Siddque, U. Rafique","doi":"10.23919/AEIT.2018.8577332","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577332","url":null,"abstract":"In this work, a smooth super twisting sliding mode control methodology is proposed to stabilize chained form nonholonomic system. As conventional sliding mode control causes an oscillating behavior known as chartering. This phenomena sometimes strongly deteriorate the system performance and led the systems to instability. To circumvent this problem a second order sliding mode control methodology based on smooth super twisting sliding mode control is presented. The proposed control algorithm is then applied to the chained form nonholonomic firetruck model, which shows asymptotic convergence. From the obtained results, the effectiveness of proposed algorithm has been evident.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129744180","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 Smart Grid Labs of e-distribuzione","authors":"A. Cammarota, G. Sapienza, G. Bianco, S. Riva, M. Rubino","doi":"10.23919/AEIT.2018.8577439","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577439","url":null,"abstract":"The wide diffusion of Distributed Generation, the need to improve the quality of service and the progressive evolution of technology have led to an evolution of the distribution network carrying out the e-distribuzione’s idea of Smart Grids. Moving in this direction, e-distribuzione built up two laboratory located in the cities of Milan and Bari to carry out research and development activity on smart grids. In particular, real time digital simulators and emulators are used to develop and test new equipment, instruments and sensors for digitizing the grid and ensuring its integration into the e-distribuzione ecosystem.This paper illustrates the Smart Grid Labs of e-distribuzione, where new infrastructures for remote control, automation and advanced management of the Medium Voltage (MV) and Low Voltage (LV) networks are designed and implemented. Finally, the paper shows the innovative projects in which the new Smart Grid devices are involved.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130057487","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":"[Copyright notice]","authors":"","doi":"10.23919/aeit.2018.8577443","DOIUrl":"https://doi.org/10.23919/aeit.2018.8577443","url":null,"abstract":"","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132894495","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":"Rail Potential Calculation: Impact of the Chosen Model on the Safety Analysis","authors":"P. Colella, E. Pons, Andrea Tortora","doi":"10.23919/AEIT.2018.8577295","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577295","url":null,"abstract":"In Traction Electrification Systems (TESs), a current flows into the rails both in normal operation and fault conditions. Therefore, in both cases, a voltage between rails and earth, called Rail Potential (RP), occurs. The international Standard EN 50122-1 requires to evaluate the RP on the basis of the voltage drop in the return circuit. In this work, this approach is named Voltage Drop Method (VDM). Usually, in this approach, the rails are considered isolated from ground, the type of interconnection between the negative pole of the converter and the grounding system of the TPS is not taken into account, and the RP in a generic point of the railway is computed multiplying the current flowing in the return path and the longitudinal resistance of the rails up to the Traction Power Substation (TPS). If the RP exceeds the maximum permissible effective touch voltages, function of time, indicated by EN 50122-1, provisions to reduce the electrocution risk shall be applied. Even if the VDM generally provides conservative values for the RP, it cannot be considered completely faithful, due to the simplifying assumptions usually adopted. Therefore, the decision process to evaluate if some measures to reduce the RP shall be adopted can lead to wrong results. In this work, a faithful circuital model of the railways was used to compute the RP for several scenarios; a comparison with the results computed by VDM was carried out. The goal is to evaluate the trustworthiness of the VDM, highlighting the differences with a more faithful model.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123146000","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":"A novel synchronizer for a 17.9ps Nutt Time-to-Digital Converter implemented on FPGA","authors":"R. Machado, L. Rocha, J. Cabral","doi":"10.23919/AEIT.2018.8577365","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577365","url":null,"abstract":"The evolution of Field-Programmable Gate Array (FPGA) technology triggered the appearance of FPGAs with higher operating frequencies and large number of resources. Simultaneously, the evolution of the FPGAs design tools has simplified the development process, reducing the time to market. These factors made FPGA platforms attractive for several applications, including time-of-flight applications that require the implementation of Time-to-Digital Converters (TDC). This work presents a Nutt TDC, based on a coarse counter and a Tapped Delay Line, with 17.9 picoseconds resolution and 5.4 LSB differential nonlinearity (DNL), implemented in a Xilinx Zynq-7000 FPGA, to be used on LiDAR applications and pull-in time measuring in MEMS accelerometers systems.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126561869","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":"Different Screen Arrangements of Distribution Insulated Cables","authors":"R. Benato, S. Sessa, G. Rinzo, Oscar Marchese, L. Tanzi, Roberto Zapelloni","doi":"10.23919/AEIT.2018.8577277","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577277","url":null,"abstract":"The distribution cables can be operated with their metallic screens in solid bonding (bonded and earthed at both ends) or in single-point bonding (bonded and earthed only at secondary station earthing grid). Each arrangement has pros and cons and the final choice depends upon the cable line length and the earth potential rise of the primary substation. If the distribution network is operated with neutral earthed by an arc suppression coil (or Petersen coil), a first phase-to-ground short circuit gives a low current value (depending on the degree of Petersen coil tuning). In these systems, the sound phases can experience high overvoltages during the fault clearing time so that a second phase-to-ground short circuit can occur in a different phase from the first faulted one. This occurrence is very redoubtable since the short circuit current can be several thousand of amps. The single-point bonding (if applicable) avoids that a great part of the screens is interested by high currents and by their associated I2t. On the contrary, solid-bonded cables suffer from high double phase-to-ground short circuit currents, which could damage the outer jacket of the cables and lead to the failure with time.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130190222","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":"Advancements of field tests in PrInCE lab experimental microgrid","authors":"B. Aluisio, A. Cagnano, E. De Tuglie, M. Dicorato, G. Forte, R. Sbrizzai, M. Trovato","doi":"10.23919/AEIT.2018.8577300","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577300","url":null,"abstract":"This paper is aimed to present the progress in the operation tests of the PrInCE lab experimental microgrid realized at Power and Energy System Laboratory of Politecnico di Bari. The facility is exploited as a testbed for the characterization of device features, for the field implementation of single and coordinate control strategies, and for the development of research project demonstration. In particular, results of the static and dynamic characterization of the gas- fueled cogeneration system installed in the microgrid are presented.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127823583","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":"Recent research conducted at the SGILab towards an efficient and interoperable smart grid","authors":"E. Kotsakis, Alexandre Lucas, N. Andreadou, G. Fulli, M. Masera","doi":"10.23919/AEIT.2018.8577412","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577412","url":null,"abstract":"This paper presents recent research conducted at the JRC Smart Grid Interoperability Lab and analyses key parameters that should be taken into consideration for the development of interoperable and sustainable electricity systems. Increasing energy efficiency aims at reducing the overall energy consumption and consequently lower the stress on the environment by using less energy. The first research activity illustrated is on the use of Advanced Metering Infrastructure as a gateway to improve Demand Response/Demand Side Management. The second one focuses on the use of photovoltaic in a low voltage distribution network and studies the effect of penetration in voltage unbalances. The last one addresses the power quality performance of electric vehicle chargers under low temperature conditions and provides hints for improvements. The paper underlines several factors that could affect the efficiency of systems towards making improvements that increase the stability of the relevant operations.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134373794","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":"A Virtual Synchronous Machine Control applied to Photovoltaic Generation in Decentralized Microgrid","authors":"A. Cervi, Riccardo Stecca, Andrea Vian, F. Bignucolo","doi":"10.23919/AEIT.2018.8577415","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577415","url":null,"abstract":"The increasing integration of renewable energy sources in microgrids has introduced new challenges in their control strategy management. The lack of inertia, due to the large presence of power-electronic interfaced generators, worsens network dynamic performances in the case of sudden variations in its working conditions and, as a result, the stability of microgrid may no longer be guaranteed. In order to ensure the stable operation of microgrid, the use of suitable controllers, applied to static generators for providing a power contribution during network perturbations, is a concrete way. In this work, a virtual synchronous machine control is developed for a photovoltaic plant, without deload requirements. Unlike the swing equation based inertial response, this control strategy appears more suitable since it ensures grid stability even when no reference frequency is locally available. Different simulations, carried out in DIgSILENT PowerFactory environment, validate the proposed control scheme for a test microgrid. Finally, the controller operation during low solar radiation periods is also illustrated.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133829965","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":"Measurement of Electric Power Quantities and Efficiency in Nonsinusoidal Conditions","authors":"F. Grasso, A. Luchetta, S. Manetti, Franco Cenghialta, Ernesto D'Antuono, Stefano De Giorgis","doi":"10.23919/AEIT.2018.8577454","DOIUrl":"https://doi.org/10.23919/AEIT.2018.8577454","url":null,"abstract":"The presence of harmonics introduces disturbances and losses in electrical systems that cause malfunctions and inefficiencies. The harmonic emission levels are progressively increasing because of the presence of non linear loads and distributed generation from renewable energy resources. The assessment of the effects on electrical systems is an important goal for modern industries, where the disturbances cause both damages and inefficiencies. According to the Leonardo Power Quality Initiative (LPQI) and to the research by the Electric Power Research Institute (EPRI), poor power quality is estimated to cost the European economy up to €150 billion annually and the U.S. sees losses ranging from $119 billion to $188 billion, when the 80 percent of power-quality disturbances are generated within a facility. These malfunctions and inefficiencies can be reduced with the use of filtering systems, such as series passive filter. To evaluate the impact of filters on disturbances and inefficiencies, several methods were presented, based on the definitions and indications contained in the standards such as the IEEE std 1459. To carry out the necessary measures to understand the effectiveness of the filters, it is possible to use measurements in the time domain which, carried out for limited periods, but with many repetitions, can offer a valid response to the achieved efficiency. Therefore, to correctly evaluate all the values of the harmonic components, as required by the IEEE 1459, it is necessary to carry out very detailed and complex measures, which in the industrial field are difficult to achieve. In these cases, the IEEE 1459 proposes to measure the values associated with the various power components through some approximations that can lead to errors of the order of a few percentage points. Since the effects of a filter can lead to measurements comparable with the approximations introduced by the IEEE 1459, it was necessary to find a new operating mode in order to obtain the requested quantities.In this paper, a method for evaluating the efficiency obtained with the use of a passive filter is presented.","PeriodicalId":413577,"journal":{"name":"2018 AEIT International Annual Conference","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115387881","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}