Pub Date : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445399
J. Riedemann, W. Jara, R. Peña, R. Blasco-Gimenez, C. Pesce
In this paper, a multiple drive solar-pumping system is presented. The system is based on a single-stage photovoltaic (PV) topology where an array of solar panels is connected to various inverters, with each inverter supplying a corresponding centrifugal pump. The inverters are operated to extract the maximum power available from the PV system. A standard indirect vector control strategy is used to regulate each machine currents. Moreover, a modulation strategy aiming to reduce the ripple of the inverters common DC link current is presented. Simulations results are shown and discussed.
{"title":"A Multi-drive Solar Pumping System with Reduced DC-link Current Ripple","authors":"J. Riedemann, W. Jara, R. Peña, R. Blasco-Gimenez, C. Pesce","doi":"10.1109/SPEEDAM.2018.8445399","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445399","url":null,"abstract":"In this paper, a multiple drive solar-pumping system is presented. The system is based on a single-stage photovoltaic (PV) topology where an array of solar panels is connected to various inverters, with each inverter supplying a corresponding centrifugal pump. The inverters are operated to extract the maximum power available from the PV system. A standard indirect vector control strategy is used to regulate each machine currents. Moreover, a modulation strategy aiming to reduce the ripple of the inverters common DC link current is presented. Simulations results are shown and discussed.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114719358","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 : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445300
D. Lauria, S. Quaia
This paper deals with the loadability characteristics of overhead transmission lines (OHLs). The target is to provide a general analytical formulation of the loadability characteristics of uncompensated OHLs. This is a completely new approach: no previously published work has adopted an analytical approach to characterize the different regions of the loadability curves. In order to allow a direct comparison with previous works, an application example concerns the 400 kV single circuit OHLs widely used in Western Europe.
{"title":"Analytical formulation of overhead transmission lines loadability characteristics","authors":"D. Lauria, S. Quaia","doi":"10.1109/SPEEDAM.2018.8445300","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445300","url":null,"abstract":"This paper deals with the loadability characteristics of overhead transmission lines (OHLs). The target is to provide a general analytical formulation of the loadability characteristics of uncompensated OHLs. This is a completely new approach: no previously published work has adopted an analytical approach to characterize the different regions of the loadability curves. In order to allow a direct comparison with previous works, an application example concerns the 400 kV single circuit OHLs widely used in Western Europe.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124120856","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 : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445316
Marco Villani, L. Castellini, M. D'Andrea, D. Macera
This paper describes the design of a Synchronous Reluctance (SynR) Machine for a Flywheel Based Energy Storage System (FBESS). A preliminary design has been obtained and has been structurally and electromagnetically analyzed by FEM analysis. In order to improve the machine performance, an optimization process has been developed and the optimized design has been analyzed, in order to characterize the overall working range in generator and motor mode.
{"title":"Design of a Synchronous Reluctance Machine for a Flywheel-Based Energy Storage System","authors":"Marco Villani, L. Castellini, M. D'Andrea, D. Macera","doi":"10.1109/SPEEDAM.2018.8445316","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445316","url":null,"abstract":"This paper describes the design of a Synchronous Reluctance (SynR) Machine for a Flywheel Based Energy Storage System (FBESS). A preliminary design has been obtained and has been structurally and electromagnetically analyzed by FEM analysis. In order to improve the machine performance, an optimization process has been developed and the optimized design has been analyzed, in order to characterize the overall working range in generator and motor mode.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127985059","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 : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445270
Shun Kaneko, T. Yuasa, I. Miki, Yoshihiro Okamoto
This paper describes a new variable-field motor that can be driven over a wide range of speed. This motor is a type of interior permanent magnet synchronous motor (IPMSM), and two kinds of Nd-Fe-B magnets with different coercive force are used. The motor model proposed in this paper can improve the motor variable speed range and efficiency compared with a basic motor model. No-load, load, and stress analyses are carried out using FEA simulations. According to simulation results, the torque of the new motor model approximately equals that of the basic motor model, and the speed can be achieved more than 250 % of that in the basic model.
{"title":"A New Variable-Field Motor with Wide Range of Speed","authors":"Shun Kaneko, T. Yuasa, I. Miki, Yoshihiro Okamoto","doi":"10.1109/SPEEDAM.2018.8445270","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445270","url":null,"abstract":"This paper describes a new variable-field motor that can be driven over a wide range of speed. This motor is a type of interior permanent magnet synchronous motor (IPMSM), and two kinds of Nd-Fe-B magnets with different coercive force are used. The motor model proposed in this paper can improve the motor variable speed range and efficiency compared with a basic motor model. No-load, load, and stress analyses are carried out using FEA simulations. According to simulation results, the torque of the new motor model approximately equals that of the basic motor model, and the speed can be achieved more than 250 % of that in the basic model.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131555385","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 : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445261
Iman Sadeghi, H. Ehya, Reza Nasiri Zarandi, J. Faiz, A. Akmal
in this paper partial discharge (PD) fault of large synchronous machine are studied. Different defects result in various types of PD fault are introduced in order to better understanding of PD phenomenon. In addition, measurement methods of PD, categorized in four electrical, acoustic, visual and chemical groups, are introduced. Finally, these industrial measurement systems competencies are compared.
{"title":"Condition Monitoring of Large Electrical Machine under Partial Discharge Fault - A review","authors":"Iman Sadeghi, H. Ehya, Reza Nasiri Zarandi, J. Faiz, A. Akmal","doi":"10.1109/SPEEDAM.2018.8445261","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445261","url":null,"abstract":"in this paper partial discharge (PD) fault of large synchronous machine are studied. Different defects result in various types of PD fault are introduced in order to better understanding of PD phenomenon. In addition, measurement methods of PD, categorized in four electrical, acoustic, visual and chemical groups, are introduced. Finally, these industrial measurement systems competencies are compared.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131563182","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 : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445282
M. Wolkiewicz, G. Tarchała, T. Orłowska-Kowalska
This paper deals with an early detection of electrical faults of an induction motor supplied by a voltage source inverter in the closed-loop control structure DFOC. Both shorted turns of the stator windings and broken rotor bars, are taken into consideration. Internal signals from the vector control structure are utilized in order to diagnose both winding damages. The use of current or voltage signals in a synchronously rotating coordinate system is proposed in this paper. Experimental tests have been conducted for different speed and load torque values. It is shown in experimental tests, that it is possible to diagnose both motor faults, even if they occur simultaneously.
{"title":"Diagnosis of stator and rotor faults of an induction motor in closed-loop control structure","authors":"M. Wolkiewicz, G. Tarchała, T. Orłowska-Kowalska","doi":"10.1109/SPEEDAM.2018.8445282","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445282","url":null,"abstract":"This paper deals with an early detection of electrical faults of an induction motor supplied by a voltage source inverter in the closed-loop control structure DFOC. Both shorted turns of the stator windings and broken rotor bars, are taken into consideration. Internal signals from the vector control structure are utilized in order to diagnose both winding damages. The use of current or voltage signals in a synchronously rotating coordinate system is proposed in this paper. Experimental tests have been conducted for different speed and load torque values. It is shown in experimental tests, that it is possible to diagnose both motor faults, even if they occur simultaneously.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"455 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131824259","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 : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445308
Sjur Fϕyen, M. Kvammen, O. Fosso
This paper investigates the theory, intuition and performance of two known implementations of Prony's method. Such methods are useful for identifying the individual modes of a system without constructing a component-based model. In the Smart Grid, Prony Analysis has been widely used on post-disturbance ring-down measurements, which have been increasingly available with the extensive deployment of PMU's. Both methods decompose the signal into decaying sinusoidals, and estimate the frequency, damping, amplitude and phase of each modal component. The first method is based on the original Prony's method, whilst the second method is based on the thought that the system can be viewed as a digital synthesis problem where the system has the properties of an infinite impulse response filter. Both methods employ EMD-based pre-filtering. Additionally, a cluster based approach is proposed for circumventing the issue of determining model order, so that the true modes of the estimation can be distinguished from the trivial modes.
{"title":"Prony's method as a tool for power system identification in Smart Grids","authors":"Sjur Fϕyen, M. Kvammen, O. Fosso","doi":"10.1109/SPEEDAM.2018.8445308","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445308","url":null,"abstract":"This paper investigates the theory, intuition and performance of two known implementations of Prony's method. Such methods are useful for identifying the individual modes of a system without constructing a component-based model. In the Smart Grid, Prony Analysis has been widely used on post-disturbance ring-down measurements, which have been increasingly available with the extensive deployment of PMU's. Both methods decompose the signal into decaying sinusoidals, and estimate the frequency, damping, amplitude and phase of each modal component. The first method is based on the original Prony's method, whilst the second method is based on the thought that the system can be viewed as a digital synthesis problem where the system has the properties of an infinite impulse response filter. Both methods employ EMD-based pre-filtering. Additionally, a cluster based approach is proposed for circumventing the issue of determining model order, so that the true modes of the estimation can be distinguished from the trivial modes.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133487566","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 : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445377
M. Pavelek, M. Frivaldský, P. Spánik
This paper deals with basic research of the optimal working point of the wireless power transfer (WPT) systems with electromagnetic shielding. The main contribution is the development of the finite element model of proposed wireless energy transfer system with reconfigurable shielding plates. The created simulation model is reconfigurable in a way of the modification of the material as well as the geometrical properties of the shielding plates and coils. This model is then used for determination of the influence of the shielding on the transfer characteristic of the WPT system and thus optimal working point and area of the WPT system. The model is also used to partially verificed the standards for electromagnetic interference with electronics and living organism.
{"title":"Influence of the passive shielding on the optimal working point of the wireless power transfer systems","authors":"M. Pavelek, M. Frivaldský, P. Spánik","doi":"10.1109/SPEEDAM.2018.8445377","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445377","url":null,"abstract":"This paper deals with basic research of the optimal working point of the wireless power transfer (WPT) systems with electromagnetic shielding. The main contribution is the development of the finite element model of proposed wireless energy transfer system with reconfigurable shielding plates. The created simulation model is reconfigurable in a way of the modification of the material as well as the geometrical properties of the shielding plates and coils. This model is then used for determination of the influence of the shielding on the transfer characteristic of the WPT system and thus optimal working point and area of the WPT system. The model is also used to partially verificed the standards for electromagnetic interference with electronics and living organism.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132453048","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 : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445349
Takahiro Akahori, Y. Terao, H. Ohsaki, M. Tomita
DC railway systems use a low feeding voltage, which can cause some problems such as excessive concentration of substation load, regeneration cancellation, and so on. Superconducting cables can be one of the effective solutions to these problems. MATLAB simulation models were developed to analyze DC railway feeding systems and to obtain their characteristics such as voltages, currents, power loads, and energy consumption. Two different model lines of DC feeding systems were used to investigate how the superconducting cables are to be introduced into the feeding systems for effective reduction of the substation power loads. The results show that we can determine the effective installation of superconducting cables from the data of power loads and output voltages of substations.
{"title":"Effective Introduction of Superconducting Cables to DC Railway Feeding Systems","authors":"Takahiro Akahori, Y. Terao, H. Ohsaki, M. Tomita","doi":"10.1109/SPEEDAM.2018.8445349","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445349","url":null,"abstract":"DC railway systems use a low feeding voltage, which can cause some problems such as excessive concentration of substation load, regeneration cancellation, and so on. Superconducting cables can be one of the effective solutions to these problems. MATLAB simulation models were developed to analyze DC railway feeding systems and to obtain their characteristics such as voltages, currents, power loads, and energy consumption. Two different model lines of DC feeding systems were used to investigate how the superconducting cables are to be introduced into the feeding systems for effective reduction of the substation power loads. The results show that we can determine the effective installation of superconducting cables from the data of power loads and output voltages of substations.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134485376","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 : 2018-06-01DOI: 10.1109/SPEEDAM.2018.8445228
P. Marino, G. Rubino, L. Rubino, C. Capasso, O. Veneri, Istituto Motori
This paper deals with evaluations on a power architecture for the integration of renewable energy generation systems with the sustainable mobility in a smart grid scenario. Starting from a real case study, represented by a laboratory prototype of a DC micro-grid, analytical considerations are carried out by means of functional models of the main components of the microgrid. The proposed modeling allows the identification and optimization of an energy management strategy, which is specifically evaluated in this paper to reduce electric power supplied by the main grid. The simulation results highlight the good performance and the stability of the proposed strategy during different operative conditions of the micro-grid.
{"title":"A case study of a DC-microgrid for the smart integration of renewable sources with the urban electric mobility","authors":"P. Marino, G. Rubino, L. Rubino, C. Capasso, O. Veneri, Istituto Motori","doi":"10.1109/SPEEDAM.2018.8445228","DOIUrl":"https://doi.org/10.1109/SPEEDAM.2018.8445228","url":null,"abstract":"This paper deals with evaluations on a power architecture for the integration of renewable energy generation systems with the sustainable mobility in a smart grid scenario. Starting from a real case study, represented by a laboratory prototype of a DC micro-grid, analytical considerations are carried out by means of functional models of the main components of the microgrid. The proposed modeling allows the identification and optimization of an energy management strategy, which is specifically evaluated in this paper to reduce electric power supplied by the main grid. The simulation results highlight the good performance and the stability of the proposed strategy during different operative conditions of the micro-grid.","PeriodicalId":117883,"journal":{"name":"2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115904424","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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