Pub Date : 2012-12-24DOI: 10.1109/ESARS.2012.6387443
J. Prousalidis, C. Patsios, F. Kanellos, A. Sarigiannidis, N. Tsekouras, G. Antonopoulos
Shaft generator (SG) systems have been exploited for long due to several appealing advantages they present. This type of generators is installed at the shaft of the main propulsion diesel engine while they are capable of operating as propulsion engine boosting devices if suitable power electronics are used. In this paper an effort is made to provide a comprehensive analysis of shaft generator role in ship power system efficiency improvement in relation with ship operation optimization point of view. Special reference is made to the interdependence of SG with power management system as they alter the operation point of both propulsion engine and the electrical generators affecting the optimal operating point.
{"title":"Exploiting shaft generators to improve ship efficiency","authors":"J. Prousalidis, C. Patsios, F. Kanellos, A. Sarigiannidis, N. Tsekouras, G. Antonopoulos","doi":"10.1109/ESARS.2012.6387443","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387443","url":null,"abstract":"Shaft generator (SG) systems have been exploited for long due to several appealing advantages they present. This type of generators is installed at the shaft of the main propulsion diesel engine while they are capable of operating as propulsion engine boosting devices if suitable power electronics are used. In this paper an effort is made to provide a comprehensive analysis of shaft generator role in ship power system efficiency improvement in relation with ship operation optimization point of view. Special reference is made to the interdependence of SG with power management system as they alter the operation point of both propulsion engine and the electrical generators affecting the optimal operating point.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129806307","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 : 2012-12-24DOI: 10.1109/ESARS.2012.6387458
A. Yerpes, R. Manzano, P. Conejo, E. Jimenez
Operators in railway Industry have to cope with an heterogenic network, with different gauges and supply systems. For being able to run on these tracks, Operators require different types of trains, each one adapted to the specific characteristics of the line. This fact prevents scale-economies to be applied to the sector, managing in a less efficient way peak and valley demands as well as maintenance tasks. Talgo Hybrid Train is the perfect and long-time demanded solution for this problem. It can run on both electrified and non-electrified lines, and within electrified lines both AC and DC supply is supported. Furthermore propulsion bogies have been designed to allow dynamic gauge change. Talgo Hybrid Train is an all-track train that provides maximum interoperability, eliminating railway barriers since one train is enough to operate on almost any line.
{"title":"Talgo Hybrid Train: Maximum interoperability in propulsion system","authors":"A. Yerpes, R. Manzano, P. Conejo, E. Jimenez","doi":"10.1109/ESARS.2012.6387458","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387458","url":null,"abstract":"Operators in railway Industry have to cope with an heterogenic network, with different gauges and supply systems. For being able to run on these tracks, Operators require different types of trains, each one adapted to the specific characteristics of the line. This fact prevents scale-economies to be applied to the sector, managing in a less efficient way peak and valley demands as well as maintenance tasks. Talgo Hybrid Train is the perfect and long-time demanded solution for this problem. It can run on both electrified and non-electrified lines, and within electrified lines both AC and DC supply is supported. Furthermore propulsion bogies have been designed to allow dynamic gauge change. Talgo Hybrid Train is an all-track train that provides maximum interoperability, eliminating railway barriers since one train is enough to operate on almost any line.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130811847","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 : 2012-12-24DOI: 10.1109/ESARS.2012.6387503
S. Rothgang, H. Nordmann, C. Schaper, D. Sauer
Regarding battery systems for electric vehicles a lot of steps have to be taken into account during the development process - from system layout to the integration in the vehicle. In doing so, the overall design of a battery pack can be divided in mechanical, thermal and electrical issues. This work aims to give an insight to crucial points in these areas such as the layout of the battery management system and its interference with the rest of the vehicle. The stated design recommendations shall be provided among others with results from research projects supported by the German Federal Ministry of Education and Research and the Federal Ministry of Economics and Technology.
{"title":"Challenges in battery pack design","authors":"S. Rothgang, H. Nordmann, C. Schaper, D. Sauer","doi":"10.1109/ESARS.2012.6387503","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387503","url":null,"abstract":"Regarding battery systems for electric vehicles a lot of steps have to be taken into account during the development process - from system layout to the integration in the vehicle. In doing so, the overall design of a battery pack can be divided in mechanical, thermal and electrical issues. This work aims to give an insight to crucial points in these areas such as the layout of the battery management system and its interference with the rest of the vehicle. The stated design recommendations shall be provided among others with results from research projects supported by the German Federal Ministry of Education and Research and the Federal Ministry of Economics and Technology.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133232568","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 : 2012-12-24DOI: 10.1109/ESARS.2012.6387423
R. Marino, S. Scalzi, C. Verrelli
An observer-based indirect field oriented control scheme is proposed for the speed and traction control of electric vehicles powered by induction motors with uncertain constant load torque and stator and rotor resistances. The novel control architecture transforms the vehicle speed reference into a suitable motor speed reference and then guarantees the motor speed regulation to the corresponding reference on the basis of the motor speed regulation error. The motor speed measurement, which is typically available in electric vehicles, is used not only for traction control but for regulation purposes as well. The closed loop on-line identification of the three critical uncertain parameters allows for on-line estimating and imposing the motor flux modulus reference value which minimizes power losses and improves power efficiency.
{"title":"Speed and traction control in electric vehicles with induction motors","authors":"R. Marino, S. Scalzi, C. Verrelli","doi":"10.1109/ESARS.2012.6387423","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387423","url":null,"abstract":"An observer-based indirect field oriented control scheme is proposed for the speed and traction control of electric vehicles powered by induction motors with uncertain constant load torque and stator and rotor resistances. The novel control architecture transforms the vehicle speed reference into a suitable motor speed reference and then guarantees the motor speed regulation to the corresponding reference on the basis of the motor speed regulation error. The motor speed measurement, which is typically available in electric vehicles, is used not only for traction control but for regulation purposes as well. The closed loop on-line identification of the three critical uncertain parameters allows for on-line estimating and imposing the motor flux modulus reference value which minimizes power losses and improves power efficiency.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133262758","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 : 2012-12-24DOI: 10.1109/ESARS.2012.6387490
F. Migliardini, P. Corbo
This paper analyzes the causes of lifetime reduction for hydrogen PEM fuel cells used as power sources in electric power trains with different hybrid configurations. The electrochemical impedance spectroscopy is utilized to investigate the possible phenomena responsible of fuel cell performance degradation in dependence of the particular hybrid configuration adopted.
{"title":"Optimization of fuel cell performance in vehicles by electrochemical impedance spectroscopy","authors":"F. Migliardini, P. Corbo","doi":"10.1109/ESARS.2012.6387490","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387490","url":null,"abstract":"This paper analyzes the causes of lifetime reduction for hydrogen PEM fuel cells used as power sources in electric power trains with different hybrid configurations. The electrochemical impedance spectroscopy is utilized to investigate the possible phenomena responsible of fuel cell performance degradation in dependence of the particular hybrid configuration adopted.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134061568","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 : 2012-12-24DOI: 10.1109/ESARS.2012.6387432
A. Tessarolo, F. Luise, M. Bortolozzi, M. Mezzarobba
In electric permanent-magnet motors for traction applications, an open slot stator design is to be used when the winding is composed of flat-turn coils. The open slot design, combined with rotor permanent magnets, can produce remarkable cogging torque effects. This paper describes a magnetic wedge design which allows for a significant cogging torque reduction and, at the same time, allows for a fine adjustment of stator phase inductance values. The new wedge concept is applied in the paper to a 12-slot surface permanent-magnet motor. Finite-element analysis is used to study the wedge design effects on motor phase inductance and cogging torque amplitude.
{"title":"A new magnetic wedge design for enhancing the performance of open-slot electric machines","authors":"A. Tessarolo, F. Luise, M. Bortolozzi, M. Mezzarobba","doi":"10.1109/ESARS.2012.6387432","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387432","url":null,"abstract":"In electric permanent-magnet motors for traction applications, an open slot stator design is to be used when the winding is composed of flat-turn coils. The open slot design, combined with rotor permanent magnets, can produce remarkable cogging torque effects. This paper describes a magnetic wedge design which allows for a significant cogging torque reduction and, at the same time, allows for a fine adjustment of stator phase inductance values. The new wedge concept is applied in the paper to a 12-slot surface permanent-magnet motor. Finite-element analysis is used to study the wedge design effects on motor phase inductance and cogging torque amplitude.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134086325","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 : 2012-12-24DOI: 10.1109/ESARS.2012.6387431
A. Tessarolo, F. Luise, M. Mezzarobba, M. Bortolozzi, L. Branz
Permanent magnet synchronous machines, especially if designed with open stator slots, may suffer from important cogging torque issues. A special magnetic wedge design has been presented in a companion paper to cope with this problem. The design of such wedge is herein processed through a genetic algorithm in order to find the optimal configuration, which leads to cogging torque minimization. An optimal design configuration is found and compared to non-optimal ones to quantify the benefits that can be achieved by genetic optimization.
{"title":"Special magnetic wedge design optimization with genetic algorithms for cogging torque reduction in permanent-magnet synchronous machines","authors":"A. Tessarolo, F. Luise, M. Mezzarobba, M. Bortolozzi, L. Branz","doi":"10.1109/ESARS.2012.6387431","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387431","url":null,"abstract":"Permanent magnet synchronous machines, especially if designed with open stator slots, may suffer from important cogging torque issues. A special magnetic wedge design has been presented in a companion paper to cope with this problem. The design of such wedge is herein processed through a genetic algorithm in order to find the optimal configuration, which leads to cogging torque minimization. An optimal design configuration is found and compared to non-optimal ones to quantify the benefits that can be achieved by genetic optimization.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133707497","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 : 2012-12-24DOI: 10.1109/ESARS.2012.6387387
D. Schlabe, J. Lienig
This review paper summarizes state-of-the-art energy management methods applied to electrical systems of large aircraft. An electrical load management based on fixed priorities of the loads is considered a conventional implementation as applied in today's aircraft systems. It can cut and reconnect loads depending on their importance. The advantages and disadvantages of such a system are presented. Further implementations are depicted that are able to eliminate certain drawbacks of such a typical load management. Most promising is the exploitation of so-called slow responding loads which can be handled like an electrical storage. The optimization potential on future energy management functions is finally discussed and conclusions are drawn.
{"title":"Energy management of aircraft electrical systems - state of the art and further directions","authors":"D. Schlabe, J. Lienig","doi":"10.1109/ESARS.2012.6387387","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387387","url":null,"abstract":"This review paper summarizes state-of-the-art energy management methods applied to electrical systems of large aircraft. An electrical load management based on fixed priorities of the loads is considered a conventional implementation as applied in today's aircraft systems. It can cut and reconnect loads depending on their importance. The advantages and disadvantages of such a system are presented. Further implementations are depicted that are able to eliminate certain drawbacks of such a typical load management. Most promising is the exploitation of so-called slow responding loads which can be handled like an electrical storage. The optimization potential on future energy management functions is finally discussed and conclusions are drawn.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132911465","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}
This paper introduces the composition and the power loss model of a wireless power transfer system. By the measured power loss parameters and experimental results, the optimal current control for the maximum power transfer efficiency is proposed.
{"title":"Optimal current control of a wireless power transfer system for high power efficiency","authors":"Jaegue Shin, Seungyong Shin, Yangsu Kim, Seokhwan Lee, Boyune Song, Guho Jung","doi":"10.1109/ESARS.2012.6387426","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387426","url":null,"abstract":"This paper introduces the composition and the power loss model of a wireless power transfer system. By the measured power loss parameters and experimental results, the optimal current control for the maximum power transfer efficiency is proposed.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121101062","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 : 2012-12-24DOI: 10.1109/ESARS.2012.6387406
T. Schrader, C. Heising, V. Staudt, A. Steimel
Actually, new static-converter stations are build as modular multilevel converters (MMC) to feed the AC 16.7-Hz railway grids from the public grid. In order to cope with the high dynamic requirements of railway grids, dynamic control concepts are a must. In this paper, a multivariable control concept is presented which utilizes pole-restraining control. The dynamic behaviour is analysed under different dynamic situations concerning load and grid-voltage changes.
{"title":"Multivariable control of MMC-based Static converters for railway applications","authors":"T. Schrader, C. Heising, V. Staudt, A. Steimel","doi":"10.1109/ESARS.2012.6387406","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387406","url":null,"abstract":"Actually, new static-converter stations are build as modular multilevel converters (MMC) to feed the AC 16.7-Hz railway grids from the public grid. In order to cope with the high dynamic requirements of railway grids, dynamic control concepts are a must. In this paper, a multivariable control concept is presented which utilizes pole-restraining control. The dynamic behaviour is analysed under different dynamic situations concerning load and grid-voltage changes.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121157220","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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