B. Vărăticeanu, P. Minciunescu, C. Nicolescu, S. Matei, M. Neacşu
The paper describes the design and the experimental validation of an electric naval propulsion system with rim driven propeller. The electric naval propulsion system is submerged in water providing an effective cooling for the electric machine and thus achieving a high power density. The proposed slotless design of the permanent magnet (PM) machine allows a convenient way to protect the motors' active parts against water. For accurate prediction of PM machine electromagnetic performances, finite element method (FEM) was used.
{"title":"Design and validation of a 2.5 kW electric naval propulsion system with rim driven propeller","authors":"B. Vărăticeanu, P. Minciunescu, C. Nicolescu, S. Matei, M. Neacşu","doi":"10.1109/EV.2017.8242096","DOIUrl":"https://doi.org/10.1109/EV.2017.8242096","url":null,"abstract":"The paper describes the design and the experimental validation of an electric naval propulsion system with rim driven propeller. The electric naval propulsion system is submerged in water providing an effective cooling for the electric machine and thus achieving a high power density. The proposed slotless design of the permanent magnet (PM) machine allows a convenient way to protect the motors' active parts against water. For accurate prediction of PM machine electromagnetic performances, finite element method (FEM) was used.","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122308050","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}
A. Marinescu, I. Dumbravă, A. Vintilă, D. Marinescu, D. Neagu, V. Nicolae, A. Radu
Wireless power transmission is a special concern of electrical engineering with major implications in the life of society. It is manifested both in the scientific field through the large number of congresses and prestigious journals publications as well as in various practical applications ranging from medical care to robotics, communications and military technique. After a latency of more than 100 years since Tesla's inventions, advances in microelectronics and power electronics have led to the capitalization of this field. Now is the time when different wireless power transmission techniques are used starting from powers in the order of some W to powers of tenths of kW. This paper presents for the first time details about the 3.7 kW equipment for the wireless battery charging for Dacia Sandero Electron EV. There is a very special interest for such systems because it is part of the preparations for the next generation of driverless EV cars.
{"title":"The way to engineering EV wireless charging: DACIA electron","authors":"A. Marinescu, I. Dumbravă, A. Vintilă, D. Marinescu, D. Neagu, V. Nicolae, A. Radu","doi":"10.1109/EV.2017.8242094","DOIUrl":"https://doi.org/10.1109/EV.2017.8242094","url":null,"abstract":"Wireless power transmission is a special concern of electrical engineering with major implications in the life of society. It is manifested both in the scientific field through the large number of congresses and prestigious journals publications as well as in various practical applications ranging from medical care to robotics, communications and military technique. After a latency of more than 100 years since Tesla's inventions, advances in microelectronics and power electronics have led to the capitalization of this field. Now is the time when different wireless power transmission techniques are used starting from powers in the order of some W to powers of tenths of kW. This paper presents for the first time details about the 3.7 kW equipment for the wireless battery charging for Dacia Sandero Electron EV. There is a very special interest for such systems because it is part of the preparations for the next generation of driverless EV cars.","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131432389","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}
Analyzing the values of public transport systems energy indicators and metropolitan air pollution together with the branch specific economic forecasts, the authorities and suppliers can estimate future trends. To reduce the urban usage of personal automobiles it is needed to increase the proportion of electric public transport vehicles (Tramways, Trolleys, Electric buses), also it needs to increase the urban mobility satisfaction by increasing attractiveness and accessibility of networks, growing essentially the number of trips by public transport, all together can insure us more livable cities.
{"title":"The urban electric bus, a sustainable solution to increase energy efficiency of public transport and reduce atmospheric pollution in the cities","authors":"I. Csuzi, B. Csuzi","doi":"10.1109/ev.2017.8242101","DOIUrl":"https://doi.org/10.1109/ev.2017.8242101","url":null,"abstract":"Analyzing the values of public transport systems energy indicators and metropolitan air pollution together with the branch specific economic forecasts, the authorities and suppliers can estimate future trends. To reduce the urban usage of personal automobiles it is needed to increase the proportion of electric public transport vehicles (Tramways, Trolleys, Electric buses), also it needs to increase the urban mobility satisfaction by increasing attractiveness and accessibility of networks, growing essentially the number of trips by public transport, all together can insure us more livable cities.","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125347986","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}
Nowadays, the increase of mobility necessity combined with the targets to reduce pollution (emissions, noise, etc.) and the dependence to fossil fuels, strongly supports the development of electrics (EVs) and hybrid vehicles (HEVs). In this context, the present paper presents the main particularities of the traction systems of these vehicles, making a comparison with the classical internal combustion engine (ICE) based vehicles. This analysis is supported by numerical simulations using Matlab-Simulink models developed by the authors.
{"title":"Traction control analysis of electric vehicles","authors":"Andrei Bortoi, G. Danciu","doi":"10.1109/EV.2017.8242115","DOIUrl":"https://doi.org/10.1109/EV.2017.8242115","url":null,"abstract":"Nowadays, the increase of mobility necessity combined with the targets to reduce pollution (emissions, noise, etc.) and the dependence to fossil fuels, strongly supports the development of electrics (EVs) and hybrid vehicles (HEVs). In this context, the present paper presents the main particularities of the traction systems of these vehicles, making a comparison with the classical internal combustion engine (ICE) based vehicles. This analysis is supported by numerical simulations using Matlab-Simulink models developed by the authors.","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126292719","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}
M. Iordache, D. Niculae, Lucian Ene, C. Sandu, Lavinia Bobaru, Catalin Bibirica
In this paper is described a set of constraints applied to a wireless power-supply system (emitter and receiver) for operating in optimal conditions. These constraints regard both geometrical aspects and operational conditions of the system. There is also presented the performance optimization in the power wireless transfer. Starting from the equivalent scheme of a wireless power transfer system sinusoidal behavior, there are generated the system performances (the delivered active power or the system efficiency) in full symbolic and/or symbolic-numeric forms, obtaining an appropriate frequency space representation based on the complex or Laplace modified nodal equations (MNE) or/and Laplace state variable equations (SVE). In order to obtain the optimal values of the system parameters, that provide the maximum performances, there are used the MATLAB procedures which minimize these objective functions. These equations are combined with some measurements performed on the real system and an unconstrained minimization algorithm for some scalar and/or vector functions of multiple variables provided by MATLAB Optimization Toolbox. The algorithm is suitable to compute optimal circuit parameters, which guarantee the minimum and maximum values of the performance quantity. Linear or small-signal nonlinear circuits can be treated in this manner. This study has also highlighted some aspects regarding the conditions that have to be accomplished by a power supply system that uses wireless technologies, for an optimal transfer of energy. The proposed optimization techniques were tested and validated with simulation data on some illustrative examples.
{"title":"On the procedures for optimal wireless energy transfer systems","authors":"M. Iordache, D. Niculae, Lucian Ene, C. Sandu, Lavinia Bobaru, Catalin Bibirica","doi":"10.1109/EV.2017.8242118","DOIUrl":"https://doi.org/10.1109/EV.2017.8242118","url":null,"abstract":"In this paper is described a set of constraints applied to a wireless power-supply system (emitter and receiver) for operating in optimal conditions. These constraints regard both geometrical aspects and operational conditions of the system. There is also presented the performance optimization in the power wireless transfer. Starting from the equivalent scheme of a wireless power transfer system sinusoidal behavior, there are generated the system performances (the delivered active power or the system efficiency) in full symbolic and/or symbolic-numeric forms, obtaining an appropriate frequency space representation based on the complex or Laplace modified nodal equations (MNE) or/and Laplace state variable equations (SVE). In order to obtain the optimal values of the system parameters, that provide the maximum performances, there are used the MATLAB procedures which minimize these objective functions. These equations are combined with some measurements performed on the real system and an unconstrained minimization algorithm for some scalar and/or vector functions of multiple variables provided by MATLAB Optimization Toolbox. The algorithm is suitable to compute optimal circuit parameters, which guarantee the minimum and maximum values of the performance quantity. Linear or small-signal nonlinear circuits can be treated in this manner. This study has also highlighted some aspects regarding the conditions that have to be accomplished by a power supply system that uses wireless technologies, for an optimal transfer of energy. The proposed optimization techniques were tested and validated with simulation data on some illustrative examples.","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124830312","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}
A. Chirilă, I. Deaconu, S. Draghici, V. Năvrăpescu
In the paper it is presented a designing algorithm for decoding the data provided by a two-channel incremental encoder in order to identify the rotation direction. Such information is useful when monitoring the operation status of various driving devices found within a vehicle. The resulting digital circuit is implemented on a FPGA (Field-Programmable Gate Array), which can be easily included as a programming block into the architecture of an ASIC (Application-Specific Integrated Circuit), part of a vehicle controller unit for components operation supervising.
{"title":"Digital system for rotational direction detection using a FPGA","authors":"A. Chirilă, I. Deaconu, S. Draghici, V. Năvrăpescu","doi":"10.1109/EV.2017.8242099","DOIUrl":"https://doi.org/10.1109/EV.2017.8242099","url":null,"abstract":"In the paper it is presented a designing algorithm for decoding the data provided by a two-channel incremental encoder in order to identify the rotation direction. Such information is useful when monitoring the operation status of various driving devices found within a vehicle. The resulting digital circuit is implemented on a FPGA (Field-Programmable Gate Array), which can be easily included as a programming block into the architecture of an ASIC (Application-Specific Integrated Circuit), part of a vehicle controller unit for components operation supervising.","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125747056","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}
J. Linden, Y. Nikulshin, S. Wolfus, Hanan Rumbak, O. Ezer, Y. Yeshurun
Optimizing the efficiency of primary and secondary coil configurations for Dynamic Wireless Power Transfer (DWPT) in Electric Vehicles (EVs) requires means for accurate calculation of the mutual inductance in an array of coils. Based on finite element simulation method, we present a quick and accurate method for calculating the energy transfer capabilities of a given DWPT array. By consecutively switching on and off every coil and driving them with a constant current ramp rate, mutual inductances and a coupling coefficient matrix of the whole configuration is easily calculated. This method allows for relatively easy optimization and up-scaling of DWPT systems to multiple arrays of primary and secondary coils as well as implementing various coil designs and configurations. The data acquired using this method may also be used during real-time applications providing indications of vehicle relative alignment.
{"title":"Method for calculating coupling coefficients in dynamic energy transfer for electric vehicles","authors":"J. Linden, Y. Nikulshin, S. Wolfus, Hanan Rumbak, O. Ezer, Y. Yeshurun","doi":"10.1109/EV.2017.8242111","DOIUrl":"https://doi.org/10.1109/EV.2017.8242111","url":null,"abstract":"Optimizing the efficiency of primary and secondary coil configurations for Dynamic Wireless Power Transfer (DWPT) in Electric Vehicles (EVs) requires means for accurate calculation of the mutual inductance in an array of coils. Based on finite element simulation method, we present a quick and accurate method for calculating the energy transfer capabilities of a given DWPT array. By consecutively switching on and off every coil and driving them with a constant current ramp rate, mutual inductances and a coupling coefficient matrix of the whole configuration is easily calculated. This method allows for relatively easy optimization and up-scaling of DWPT systems to multiple arrays of primary and secondary coils as well as implementing various coil designs and configurations. The data acquired using this method may also be used during real-time applications providing indications of vehicle relative alignment.","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114681983","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}
Pınar Kırcı, Deniz Zengin, Bedri Karademir, Metin Erzen
This paper presents an application that will be used in shopping malls. It is an indoor positioning system (IPS) based mobile application. The main idea is providing a win win situation between the customers and stores. It will be utilized in the store or in front of the store with a check in at the store. Thus, the customer will easily reach many offers, product explanations of the considered store. Also, with visiting the stores the user will collect some reward points that will be used in their next shopping. In the project, main idea is to take advantage of shopping mall visiting of people and usage of smart phones together. The aim is to turn a profit with the mobile application. Also, the project may easily be adapted and work together with a new developing and remarkable transportation systems' solution Electric Vehicles (EVs).
{"title":"Localization based mobile application for shopping malls","authors":"Pınar Kırcı, Deniz Zengin, Bedri Karademir, Metin Erzen","doi":"10.1109/EV.2017.8242091","DOIUrl":"https://doi.org/10.1109/EV.2017.8242091","url":null,"abstract":"This paper presents an application that will be used in shopping malls. It is an indoor positioning system (IPS) based mobile application. The main idea is providing a win win situation between the customers and stores. It will be utilized in the store or in front of the store with a check in at the store. Thus, the customer will easily reach many offers, product explanations of the considered store. Also, with visiting the stores the user will collect some reward points that will be used in their next shopping. In the project, main idea is to take advantage of shopping mall visiting of people and usage of smart phones together. The aim is to turn a profit with the mobile application. Also, the project may easily be adapted and work together with a new developing and remarkable transportation systems' solution Electric Vehicles (EVs).","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117030546","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}
The sector of e-light vehicles (E-LVs) suffers from an unfortunate positioning, squeezed between the e-car and e-bike market, and it has difficulty in expressing its competitive edge. On the other hand, e-light vehicles are an effective and eco-sustainable solution to overcome urban mobility problems, by replacing internal combustion engine vehicles (ICE) or creating new services. Being aware of this, the European Commission showed great interest in a few exploratory projects: among such projects, Ele. C. Tra.-Electric City Transport Project, IEE Programme 2012, represents a paradigmatic experience that provided several useful suggestions. Taking inspiration from what Ele. C. Tra.-Electric City Transport carried out, a new Horizon 2020, ELVITEN Project, will start in November 2017 and develop 8 pilot cases in Europe to ease the e-light vehicle use in urban areas concretely. Simultaneously, Ele. C. Tra.-Electric City Transport partners are continuing promotion of e-light vehicles in urban areas at local and international level, also in Romania thanks to RELIANS, former partner.
{"title":"E-light vehicles in European cities: Starting from “Ele. C. Tra.-Electric City Transport” experience, ready to take up new challenges","authors":"R. Frîncu, F. Misso, C. Repetto","doi":"10.1109/EV.2017.8242114","DOIUrl":"https://doi.org/10.1109/EV.2017.8242114","url":null,"abstract":"The sector of e-light vehicles (E-LVs) suffers from an unfortunate positioning, squeezed between the e-car and e-bike market, and it has difficulty in expressing its competitive edge. On the other hand, e-light vehicles are an effective and eco-sustainable solution to overcome urban mobility problems, by replacing internal combustion engine vehicles (ICE) or creating new services. Being aware of this, the European Commission showed great interest in a few exploratory projects: among such projects, Ele. C. Tra.-Electric City Transport Project, IEE Programme 2012, represents a paradigmatic experience that provided several useful suggestions. Taking inspiration from what Ele. C. Tra.-Electric City Transport carried out, a new Horizon 2020, ELVITEN Project, will start in November 2017 and develop 8 pilot cases in Europe to ease the e-light vehicle use in urban areas concretely. Simultaneously, Ele. C. Tra.-Electric City Transport partners are continuing promotion of e-light vehicles in urban areas at local and international level, also in Romania thanks to RELIANS, former partner.","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133030211","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}
B. Vărăticeanu, P. Minciunescu, S. Matei, C. Nicolescu
This paper describes the choice and the design optimization of an industrial purpose permanent magnet brushless synchronous motor to be used in a small electric vehicle conversion. The suitable stator configuration for high torque density combined with reduced cogging torque and reduced torque ripple is analyzed. Finite element analysis is used to evaluate the performance of different electric motor configurations. An experimental validation of the motor configurations characteristics was made. The measured values of the back electromotive force and torque are compared with the numerical predicted values.
{"title":"Optimization and validation of a 10 kW permanent magnet brushless motor for small electric vehicles","authors":"B. Vărăticeanu, P. Minciunescu, S. Matei, C. Nicolescu","doi":"10.1109/EV.2017.8242095","DOIUrl":"https://doi.org/10.1109/EV.2017.8242095","url":null,"abstract":"This paper describes the choice and the design optimization of an industrial purpose permanent magnet brushless synchronous motor to be used in a small electric vehicle conversion. The suitable stator configuration for high torque density combined with reduced cogging torque and reduced torque ripple is analyzed. Finite element analysis is used to evaluate the performance of different electric motor configurations. An experimental validation of the motor configurations characteristics was made. The measured values of the back electromotive force and torque are compared with the numerical predicted values.","PeriodicalId":186248,"journal":{"name":"2017 Electric Vehicles International Conference (EV)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131910226","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}
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