2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)最新文献

{"title":"An Advanced Methodology for Characterizing the Net Load of Electric Vehicle Charging Stations Equipped with Onsite PV Systems","authors":"A. Bracale, P. Caramia, P. De Falco","doi":"10.1109/speedam53979.2022.9842035","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9842035","url":null,"abstract":"The number of Electric Vehicles (EVs) in service is expected to vastly increase in the next years, requiring an adequate effort in promoting and installing new EV Charging Stations (EVCSs) spread around the territory. From a power system perspective, these are configured as additional uncertain loads of MV and LV distribution grids. The problem is complicated in the case of EVCSs equipped with onsite Photovoltaic (PV) systems, as the overall net load is affected by the uncertainties of the charging energy and of the energy generated from the renewable source. A proper statistical characterization of the net load of such EVCSs is mandatory to manage and operate the networks, addressing the increased load and its random behavior. This paper contributes to this field by developing a probabilistic Monte Carlo based methodology that considers three random features: the expected usage of the individual EV Charging Points (EVCPs), the composition of the EV fleet that uses the EVCS, and the features of the solar resource at the EVCS location. Numerical experiments based on actual data are presented to validate the proposed methodology, with different case studies and modeling of the charging events.","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115614493","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":"Performance Assessment of an Isolated DC Nanogrid with Boost Type Interfaces and Current-Mode Primary Control","authors":"Jingdi Wang, L. Lopes, U. Eicker","doi":"10.1109/speedam53979.2022.9842106","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9842106","url":null,"abstract":"Isolated DC nanogrids based on stochastic renewable energy sources and variable loads rely on Energy Storage (ES) units for voltage regulation and power quality. A hierarchical control architecture with primary and secondary layers is often used. This paper discusses the performance of an isolated DC nanogrid with Boost type interfaces and current-mode primary control. The former allows the use of low voltage distributed energy resources while the latter, the use of a single control loop in the primary control. A design approach for the output capacitor of the interface is proposed. It deals with the stability issue caused by the droop factor in primary control. This is verified by simulations as well as the impact of the State-of-Charge (SoC) control scheme of the ES units and secondary control on the voltage regulation of the DC nanogrid.","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129571912","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":"Protection, Communication and Topology Aspects of an Electrical Underground Distribution Grid","authors":"Euler Ribeiro, Letícia Lagni Dagnese, T. R. Chaves, M. A. Martins, Maileen Schwarz Simão, Marcelo Furlan Garrido","doi":"10.1109/speedam53979.2022.9842133","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9842133","url":null,"abstract":"The Research and Development project named Urban Futurability, developed by the energy distribution utility Enel Distribuição Sao Paulo, has as its initiative to bury and modernize part of the overhead electric power distribution grid, applying an intelligence layer to a pilot grid located in São Paulo, Brazil. This paper deals with the electrical aspects and the main innovation points in the protection and communication systems adopted in the respective underground distribution grid. The designed grid has a radial configuration with automated switches spread over underground Medium Voltage (MV) feeders, which ensure the segmentation of the distribution network. This way, the Supervisory Control and Data Acquisition System (SCADA) receives the information from the communication and protection layers, to ensure greater reliability and flexibility in the grid operations. These assets contribute to the gradual migration to a model of intelligent functionalities, allowing the power utility to improve its essential services, bringing benefits to the consumer population, without compromising the system.","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127921741","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 Method for the Parameter Identification of an AC Motor High-Frequency Model Based on the Exchange Market Algorithm","authors":"Lara Bruno, V. Monopoli","doi":"10.1109/speedam53979.2022.9842153","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9842153","url":null,"abstract":"The use of wide bandgap semiconductor devices, such as SiC and GaN MOSFETs, in high-frequency converters introduces new challenges for the design of electric drives. The very fast switching transient of which these devices are capable, in fact, can become a serious threat for the reliability of the entire system. Electromagnetic interferences due to the high dv/dt and di/dt, voltage reflections along the cable that cause overvoltage and ringing at the motor terminals, and large common-mode voltages that produce current circulation in the motor bearings are recognized as the major phenomena leading to premature failure of the drive. It is therefore important for designers to approach the problem from a system point of view, having the possibility to accurately model the system in the high frequency domain to take appropriate measures to increase reliability. In this paper, an automated fitting procedure is proposed to identify one of the most accurate high-frequency models of an induction machine. The procedure relies on the experimental measurement of the differential, common-mode and parasitic impedance of the tested machine and adopts Exchange Market optimization algorithm to search for the best approximation of the three measured impedances. Implementation issues and advantages are presented and discussed.","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121339680","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":"Assessing the Dependence of Li-Ion Batteries Capacity on Load Current Frequency","authors":"Yukai Chen, Wenlong Wang, D. J. Pagliari, E. Macii, M. Poncino","doi":"10.1109/speedam53979.2022.9842122","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9842122","url":null,"abstract":"Lithium-ion batteries are the most common chemistry thanks to their many desirable properties, such as high energy density and long lifetimes; however, they still exhibit several non-ideal properties common to other battery chemistries, such as rated capacity effect, capacity dependence on load variation, and recovery effects. In the last two decades, many works in the EDA community have focused on methods to characterize and model these non-idealities. In particular, for the rated capacity effect and the recovery effect, accurate models have been derived that allow tracking battery behaviour with a reasonable degree of fidelity. However, one effect that has not been thoroughly explored is how battery capacity is affected by the spectral properties of the load current and its frequency distribution. Some preliminary works analyzed this relation based only on the information provided by datasheets and lacked an experimental validation of the resulting models. We conduct experimental measurements to analyze this dependence between usable battery capacity and the frequency spectrum of load current in this work. Our measurements illustrate that this relation is much more sophisticated than the one extracted from datasheets information: it is not monotonic and exhibits a local maximum point that changes over time as the battery ages.","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121499678","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":"Study of New Consequences on Small Ferries Stability of Li-Po Batteries for Hybrid Propulsion","authors":"V. Ruggiero","doi":"10.1109/speedam53979.2022.9842268","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9842268","url":null,"abstract":"The Hybrid Propulsion is a reality now and is increasing its diffusion more and more. The basic concept of Hybrid Propulsion is the use of battery packs to store energy, and consequentially operate the propulsion system of the ship, in order to have zero emission navigation, especially in areas of environmental interest.This solution is especially important in small ships, where the limited Power, required for propulsion at low speed, can be easily provided by battery packs.This kind of propulsion makes extensive use of Li-Ion or Li-Po batteries, storing high quantities of energy (MWh); furthermore, the propulsion systems are usually operating with high voltage (660V or more) to guarantee an adequate efficiency to the system.On one side the Lithium based batteries offer a good capability storing energy, especially compared with Lead Acid batteries, but on the other side there is a risk of an explosion in case of overheating.The size of batteries used for propulsion is larger than the size of the batteries normally installed on board and this has a strong impact on the fire risk and on the consequent solutions to maintain safety.This paper will investigate the consequences of the hybrid propulsion in small ships, considering the State of Art of Rules regarding several points of view: the fire safety and the possible solutions adopted regarding Li-Po batteries. The study will consider the case study of a small passenger ship, and the available informations for fire protection in case of onboard batteries, also examining the general arrangement adopted and the position of the Li-Po batteries, and the consequences on the project. The results will arise some interesting questions as the possible problem of flooding of batteries and consequent damage. In fact, it s true that the manufacturer of batteries are providing the battery pack with protection for overheating but must still be considered the risk of overheating coming from a fire on board or the possibility of the physical damage of the battery pack as consequence of a collision.","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125790545","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 Low Complexity Active Gate Driver to Damp the Oscillations Caused by Switching Power Transistors","authors":"Erica Raviola, F. Fiori","doi":"10.1109/speedam53979.2022.9842166","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9842166","url":null,"abstract":"The reduction of overshoots/undershoots and oscillations affecting the switching waveforms in hard-switched power circuits can be achieved by exploiting Active Gate Drivers (AGDs). The ones proposed so far are featured by a large number of driving levels and time intervals, resulting in time-consuming optimization procedures. In this work, an AGD featuring two degrees of freedom is proposed and its effectiveness is experimentally validated. To this purpose, the undershoot affecting the drain-source voltage is considered as an indirect measure of oscillation damping at the power transistor turn-on.","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"470 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125835060","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 Optimal Centralized Control Strategy for Regenerative Braking Energy Flow Exchanges in DC Railway Traction Systems","authors":"A. Andreotti, Antonio Di Pasquale, M. Pagano, N. Ravichandran, Francesco Volpe","doi":"10.1109/speedam53979.2022.9841998","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9841998","url":null,"abstract":"The growing concerns about environmental pollution and climate change focus on the need of improving the efficiency in railway systems. Being the urban rail transportation service characterized by repetitive starts and stops, regenerative braking is an attractive measure for reducing energy consumption. Typically, when Energy Storage Systems (ESSs) are not installed along the track or on board the train, the not-reversible Traction Power Substations (TPSs) significantly compromise the opportunity of recovering energy from the regenerative braking. In this context, the present work proposes an optimal centralized control strategy for energy savings and voltage regulation. The strategy is formulated in terms of a constrained optimization problem. The effectiveness of the proposed control strategy is assessed in the real case of the metro railway system of Naples (Italy). Numerical results point out that the daily reduction of energy consumption would be approximately 100 MWh, which accounts for about 40% of the daily energy supplied by the TPSs.","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133525029","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 Comparison between Hybrid Excited Permanent Magnet and Wound Rotor Motor","authors":"L. Cinti, C. Contò, N. Bianchi","doi":"10.1109/speedam53979.2022.9842232","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9842232","url":null,"abstract":"This paper deals with the comparison between Hybrid Excited Permanent Magnet (HEPM) and Wound Rotor (WR) machines. These motors are suitable for EV application due to their high torque and power density and their enhanced flux weakening capabilities. In this study, two similar machine topologies are proposed: a WR and a HEPM motor, obtained from the WR geometry adding Permanent Magnets (PMs) within salient poles core. Thus, PMs assist the excitation current (PMaEXC) to generate the rotor flux. Main design purposes are to maximize the mean torque and minimize the torque ripple. Finite-element method is employed to analyze PMaEXC motor and WR motor electromagnetic and mechanical performance. Simulation results show the comparison of flux density, flux regulation capability, back-electromagnetic force, torque and power characteristics and efficiency maps of the two motors. The magneto static analysis shows advantages and drawbacks of adding a low amount of rare-earth magnetic material to a traditional PM-less machine. The proposed PMaEXC machine can achieve high torque density at low speed and great flux-weakening capability at high speed.","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131322626","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":"Increasing the Integration Potential of EV Chargers in DC Trolleygrids: A Bilateral Substation-Voltage Tuning Approach","authors":"I. Diab, G. C. Mouli, P. Bauer","doi":"10.1109/speedam53979.2022.9841989","DOIUrl":"https://doi.org/10.1109/speedam53979.2022.9841989","url":null,"abstract":"Light rail networks such as trolleybus grids have the potential to become multi-functional smart grids by using the excess capacity of the grid to implement PV systems, EV chargers, and storage. This paper offers a solution to increasing the potential for integration of EV chargers in the trolleygrid, without additional infrastructure costs, by simply tuning the nominal (no-load) voltages of bilaterally connected substations. This method shifts the load share between the two substations, creating more room for the integration of other utilities in a desired zone of the bus route. A mathematical derivation is presented, followed by a verifying case study using detailed and verified bus and trolleygrid simulation models for the city of Arnhem, the Netherlands. It is shown that by setting a substation nominal voltage from +10V compared to its bilateral substation to -10V, the substation can take, on average, as much as 7.5 percentage points less of the load share (from 45.9% to 38.4%) and see as much as 5 percentage points more of complete zero-load time (84.3% to 89.2%).","PeriodicalId":365235,"journal":{"name":"2022 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134147669","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}