Pub Date : 2018-10-01DOI: 10.1109/icepe.2018.8559916
V. Cociu, Livia Cociu
Operating an induction machine on an asymmetrical voltage system leads to an asymmetrical system of quantities (voltages, currents, fluxes). The rotating magnetic field is no longer circular but elliptical. The dissymmetry factor of the main flux depends on the dissymmetry factor of the supply voltage and also on the operating conditions. In practical applications there is a strong influence of both operating condition and rotor speed on the asymmetric regime of the main flux. The object of this paper is to study to what extent the asymmetry of the main flux depends on the operating conditions. This matter is studied by theoretical evaluation, confirmed and completed by simulation results.
{"title":"On the Main Flux of an Induction Machine Asymmetrical Supplied","authors":"V. Cociu, Livia Cociu","doi":"10.1109/icepe.2018.8559916","DOIUrl":"https://doi.org/10.1109/icepe.2018.8559916","url":null,"abstract":"Operating an induction machine on an asymmetrical voltage system leads to an asymmetrical system of quantities (voltages, currents, fluxes). The rotating magnetic field is no longer circular but elliptical. The dissymmetry factor of the main flux depends on the dissymmetry factor of the supply voltage and also on the operating conditions. In practical applications there is a strong influence of both operating condition and rotor speed on the asymmetric regime of the main flux. The object of this paper is to study to what extent the asymmetry of the main flux depends on the operating conditions. This matter is studied by theoretical evaluation, confirmed and completed by simulation results.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"71 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":"129470758","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}
Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559807
D. Jurj, D. Micu, Alexandru Muresan
The following paper presents an overview of the actual forecasting methods and models used in renewable energy systems. The purpose of the study is to summarize the available forecasting tools in order to select the most efficient approach. The paper showcases the forecasting of production and consumption of electrical energy for local and global systems and also the topic associated with it.
{"title":"Overview of Electrical Energy Forecasting Methods and Models in Renewable Energy","authors":"D. Jurj, D. Micu, Alexandru Muresan","doi":"10.1109/ICEPE.2018.8559807","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559807","url":null,"abstract":"The following paper presents an overview of the actual forecasting methods and models used in renewable energy systems. The purpose of the study is to summarize the available forecasting tools in order to select the most efficient approach. The paper showcases the forecasting of production and consumption of electrical energy for local and global systems and also the topic associated with it.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"239 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":"127077712","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}
Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559782
C. Constantinescu, C. Munteanu, C. Pacurar, A. Racasan
Patch antennas are highly used in the last few years in domains like spaceships, satellites and missiles, cellular phones, radars, GSM, wide area computer networks and also wireless local areas. This is the result of their advantages, namely the small dimensions and weight, their low cost, ease of use, ease of integration in other circuits and capability to operate at 2 or 3 frequency values. Their disadvantages, among which low efficiency, high quality factor and a narrow bandwidth must be improved. In order to do so, we must previously study the influence of different parameters on their functioning. In this paper, three different feeding types will be implemented on patch antennas and the resulting parameters will be compared and analyzed. Also, different operating frequencies will be taken into account in order to determine the dimensions of such an antenna. Considering the Rogers RT Duroid 5880 dielectric and its standard thicknesses patch antennas will also be modeled and parameters like S parameters, the bandwidth, directivity, gain will be analyzed.
{"title":"Influence of the Patch Antenna Feeding on their Parameters","authors":"C. Constantinescu, C. Munteanu, C. Pacurar, A. Racasan","doi":"10.1109/ICEPE.2018.8559782","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559782","url":null,"abstract":"Patch antennas are highly used in the last few years in domains like spaceships, satellites and missiles, cellular phones, radars, GSM, wide area computer networks and also wireless local areas. This is the result of their advantages, namely the small dimensions and weight, their low cost, ease of use, ease of integration in other circuits and capability to operate at 2 or 3 frequency values. Their disadvantages, among which low efficiency, high quality factor and a narrow bandwidth must be improved. In order to do so, we must previously study the influence of different parameters on their functioning. In this paper, three different feeding types will be implemented on patch antennas and the resulting parameters will be compared and analyzed. Also, different operating frequencies will be taken into account in order to determine the dimensions of such an antenna. Considering the Rogers RT Duroid 5880 dielectric and its standard thicknesses patch antennas will also be modeled and parameters like S parameters, the bandwidth, directivity, gain will be analyzed.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"128 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":"127084245","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}
Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559911
Florin Ghita, R. Martis, F. P. Pop, C. Martis, B. Vărăticeanu, P. Minciunescu
This paper presents, in a comparative manner, the performances of two Permanent-Magnet Synchronous Machines (PMSM), which are used as actuators in various automotive applications. The stator of the first electric machine is based on a Vernier topology and the second has a classical structure. This paper will include an electromagnetic and thermal analysis.
{"title":"Soft Magnetic Composites in the design of Permanent Magnet Synchronous Actuators","authors":"Florin Ghita, R. Martis, F. P. Pop, C. Martis, B. Vărăticeanu, P. Minciunescu","doi":"10.1109/ICEPE.2018.8559911","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559911","url":null,"abstract":"This paper presents, in a comparative manner, the performances of two Permanent-Magnet Synchronous Machines (PMSM), which are used as actuators in various automotive applications. The stator of the first electric machine is based on a Vernier topology and the second has a classical structure. This paper will include an electromagnetic and thermal analysis.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"282 5 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":"127492954","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}
Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559609
G. Seritan, I. Tristiu, Grațian Fierăscu, R. Vatu
Current translation of electrical power systems towards smart grids is encompassing a fundamental change in their structure, as well as operation. These coordinates are setting the paths to be followed by the hardware and software embedded in electrical power systems, as well as technology adaptation to the “open-source” customers’ needs and consumption patterns. This paper is following the evolution of energy sector, accompanied by constant improvements of technology, which is providing increasingly complex hardware, which embeds power quality improvement devices, for an efficient operation of electrical power assets. A comprehensive survey of continuous advances of renewable energy sources and storage technology will be presented, which have started the transformation of end-users into energy efficient and clean prosumers, underlining the subsequent energy markets support of peer-to-peer energy trading through novel technologies as blockchain.
{"title":"Assessment for Efficient Operation of Smart Grids Using Advanced Technologies","authors":"G. Seritan, I. Tristiu, Grațian Fierăscu, R. Vatu","doi":"10.1109/ICEPE.2018.8559609","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559609","url":null,"abstract":"Current translation of electrical power systems towards smart grids is encompassing a fundamental change in their structure, as well as operation. These coordinates are setting the paths to be followed by the hardware and software embedded in electrical power systems, as well as technology adaptation to the “open-source” customers’ needs and consumption patterns. This paper is following the evolution of energy sector, accompanied by constant improvements of technology, which is providing increasingly complex hardware, which embeds power quality improvement devices, for an efficient operation of electrical power assets. A comprehensive survey of continuous advances of renewable energy sources and storage technology will be presented, which have started the transformation of end-users into energy efficient and clean prosumers, underlining the subsequent energy markets support of peer-to-peer energy trading through novel technologies as blockchain.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"1 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":"131319816","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}
Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559792
Costică Nițucă, G. Chiriac, Constantin Iulian Gatu, Dumitru Cuciureanu, Ion Murgescu
The article presents the design and construction of a laboratory off-grid photovoltaic system using analogic elements and components. Some operating subsystems are presented, such as: charging module, monitoring module for the batteries, DCDC converter, DC-AC converter. Experiments and recorded waveforms are presented and discussed. The laboratory photovoltaic system can be used for educational and researches purposes by students and researchers.
{"title":"Design and Experimental Studies on Laboratory Photovoltaic Concept for Mechatronics System of Solar Electric Application","authors":"Costică Nițucă, G. Chiriac, Constantin Iulian Gatu, Dumitru Cuciureanu, Ion Murgescu","doi":"10.1109/ICEPE.2018.8559792","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559792","url":null,"abstract":"The article presents the design and construction of a laboratory off-grid photovoltaic system using analogic elements and components. Some operating subsystems are presented, such as: charging module, monitoring module for the batteries, DCDC converter, DC-AC converter. Experiments and recorded waveforms are presented and discussed. The laboratory photovoltaic system can be used for educational and researches purposes by students and researchers.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"5 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":"131733524","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}
Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559840
Y. Veremiichuk, A. Zamulko, S. Zaichenko, A. Mahņitko, K. Berzina, I. Zicmane
The security of electricity supply is a basic requirement for the formation of the electricity market. The article deals with approaches of a system formation for of electricity supply security assessment taking into account the impact of RES. The evaluation procedure is carried out using the scenario method taking into account the threats occurring in the power system in accordance with the proposed algorithm
{"title":"Analysis of Electric Energy Supply Security Attached to Renewable Energy Sources Implementation","authors":"Y. Veremiichuk, A. Zamulko, S. Zaichenko, A. Mahņitko, K. Berzina, I. Zicmane","doi":"10.1109/ICEPE.2018.8559840","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559840","url":null,"abstract":"The security of electricity supply is a basic requirement for the formation of the electricity market. The article deals with approaches of a system formation for of electricity supply security assessment taking into account the impact of RES. The evaluation procedure is carried out using the scenario method taking into account the threats occurring in the power system in accordance with the proposed algorithm","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"11 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":"126741324","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}
Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559655
Eng. Adrian Trofinov, M. Istrate
The paper presents the concepts, the way of implementation and testing of an application with significant technical and financial impact represented by the realization of tele-protection or inter-tripping distance protection schemes without using of specific additional installations. The implementation of these schemes is done by transmitting GOOSE (Generic Object-Oriented Substation Event) messages between the electrical substations belonging to the same electrical distribution or transport company.
{"title":"New Solution for Impedance Protection Inter-tripping Schemes Implementation","authors":"Eng. Adrian Trofinov, M. Istrate","doi":"10.1109/ICEPE.2018.8559655","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559655","url":null,"abstract":"The paper presents the concepts, the way of implementation and testing of an application with significant technical and financial impact represented by the realization of tele-protection or inter-tripping distance protection schemes without using of specific additional installations. The implementation of these schemes is done by transmitting GOOSE (Generic Object-Oriented Substation Event) messages between the electrical substations belonging to the same electrical distribution or transport company.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"11 6 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":"126338135","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}
Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559881
A. Sălceanu, S. Ursache, O. Asiminicesei, C. Lazarescu
To begin with, there are listed three reasons why the topic of control and reduction of electric field issued by High Voltage Overhead Power Lines (HVOhPL) must be given greater attention: the currents induced by the external electric field are vertical and pass through the most sensitive human cells and organs, the usual ambient levels are sometimes very close to the generally accepted reference values and there is also the advantage of checking the simulations with real field measurements that are not influenced by the constant change value of the phase currents. Then a synthesis of the electrical and geometrical characteristics of the high voltage transmission and distribution networks (used pylons and wires coordinates) is presented, an essential starting point for making simulations as close as possible to reality. The simulations have been performed with two accessible, easy-to-use programs, in which the phasing influence on E-field strength has been approached, while assuming the most common types of three-phase double circuits. The recommendations on optimum phasing differ depending on the relative distribution of the three phases: vertical line, horizontal line or isosceles triangle. Conclusions are also presented regarding the influence of soil conductivity on resulting E-field strength and on its descending slew-rate.
{"title":"Phasing Effect on the Electric Fields Generated by High Voltage Overhead Power Lines","authors":"A. Sălceanu, S. Ursache, O. Asiminicesei, C. Lazarescu","doi":"10.1109/ICEPE.2018.8559881","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559881","url":null,"abstract":"To begin with, there are listed three reasons why the topic of control and reduction of electric field issued by High Voltage Overhead Power Lines (HVOhPL) must be given greater attention: the currents induced by the external electric field are vertical and pass through the most sensitive human cells and organs, the usual ambient levels are sometimes very close to the generally accepted reference values and there is also the advantage of checking the simulations with real field measurements that are not influenced by the constant change value of the phase currents. Then a synthesis of the electrical and geometrical characteristics of the high voltage transmission and distribution networks (used pylons and wires coordinates) is presented, an essential starting point for making simulations as close as possible to reality. The simulations have been performed with two accessible, easy-to-use programs, in which the phasing influence on E-field strength has been approached, while assuming the most common types of three-phase double circuits. The recommendations on optimum phasing differ depending on the relative distribution of the three phases: vertical line, horizontal line or isosceles triangle. Conclusions are also presented regarding the influence of soil conductivity on resulting E-field strength and on its descending slew-rate.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"2 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":"122211375","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}
Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559919
S. Ciornei, R. Nemeş, M. Ruba, C. Husar, H. Hedesiu, C. Martis
The paper presents a virtual test bench for the evaluation of a complete electric vehicle in Real-time based on the new configuration-based software environment NI VeriStand, using the scale vehicle dynamic testing. LMS Amesim software is used for testing and verification of a virtual electric vehicle model on a route where a New European driving cycle (NEDC) must be achieved. The model is uploaded into the real-time processor of the NI PXIe-8135 but first has to be converted into a DLL file (Dynamic-link library). Two FPGA’s will be used in order to model the machine, a Permanent Magnet Synchronous Machine (PMSM) and the control of the machine with Field Oriented Control. The connection between the FPGA’s and the PXI is done by digital and analog I/Os, using the connection boxes. The equipment’s and the software used to programmed them are from National Instruments. The link between the Amesim model and the LabView FPGA, that is used to programmed the FPGA’s, was made in NI Veristand.
{"title":"Real-Time Simulation of a Complete Electric Vehicle Based on NI VeriStand Integration Platform","authors":"S. Ciornei, R. Nemeş, M. Ruba, C. Husar, H. Hedesiu, C. Martis","doi":"10.1109/ICEPE.2018.8559919","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559919","url":null,"abstract":"The paper presents a virtual test bench for the evaluation of a complete electric vehicle in Real-time based on the new configuration-based software environment NI VeriStand, using the scale vehicle dynamic testing. LMS Amesim software is used for testing and verification of a virtual electric vehicle model on a route where a New European driving cycle (NEDC) must be achieved. The model is uploaded into the real-time processor of the NI PXIe-8135 but first has to be converted into a DLL file (Dynamic-link library). Two FPGA’s will be used in order to model the machine, a Permanent Magnet Synchronous Machine (PMSM) and the control of the machine with Field Oriented Control. The connection between the FPGA’s and the PXI is done by digital and analog I/Os, using the connection boxes. The equipment’s and the software used to programmed them are from National Instruments. The link between the Amesim model and the LabView FPGA, that is used to programmed the FPGA’s, was made in NI Veristand.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"52 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":"124914906","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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