Pub Date : 2012-12-24DOI: 10.1109/ESARS.2012.6387400
T. Saito, K. Kondo, T. Koseki, K. Hisatomi, T. Mizuma
In the DC-electrified railway system that is fed by diode rectifiers at a substation, the substation cannot transmit DC electric power to an AC-grid. Hence, the electric power regenerated by a train should be consumed by other trains. Therefore, a regenerative brake cannot be used when other trains do not consume the electric power. In order to use the regenerative brake independent of the state of other trains, using energy storage device (ESD) for DC-electrified railway systems is examined in recent years. This paper deals with feeding line and electric double layer capacitor (EDLC) hybrid train system. This research aims at establishment of the design method of controlling electric EDLC power for using a regenerative brake for any conditions. In this paper, to smooth the power from the feeding line, the control method of EDLC power based on the frequency band of the motor power is proposed, and it is verified by the numerical simulation.
{"title":"Frequency domain based power controller of energy storage device for a hybrid traction system in a DC-electrified railway","authors":"T. Saito, K. Kondo, T. Koseki, K. Hisatomi, T. Mizuma","doi":"10.1109/ESARS.2012.6387400","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387400","url":null,"abstract":"In the DC-electrified railway system that is fed by diode rectifiers at a substation, the substation cannot transmit DC electric power to an AC-grid. Hence, the electric power regenerated by a train should be consumed by other trains. Therefore, a regenerative brake cannot be used when other trains do not consume the electric power. In order to use the regenerative brake independent of the state of other trains, using energy storage device (ESD) for DC-electrified railway systems is examined in recent years. This paper deals with feeding line and electric double layer capacitor (EDLC) hybrid train system. This research aims at establishment of the design method of controlling electric EDLC power for using a regenerative brake for any conditions. In this paper, to smooth the power from the feeding line, the control method of EDLC power based on the frequency band of the motor power is proposed, and it is verified by the numerical simulation.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"17 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113978073","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.2012.6387440
G. T. de Paula, T. E. P. de Almeida, J. R. B. de A. Monteiro, M. P. de Santana, J. C. Faracco
This paper describes the development of an autonomous marine vehicle based on a trimaran structure, introducing the ship structure, the main control system and each of the subsystems onboard, including energy storage system, propulsion and sensors equipment. The main goal is to achieve high effectiveness to extend the mission capabilities of the vehicle through several techniques such as combining motion control and energy control, applying hybrid propulsion of a permanent magnet synchronous machine and a sail. The vehicle that is under development will be employed, firstly, in marine protected areas, bays, reefs, reservoirs. Further, based on the experience with this vehicle, a new and bigger marine vehicle will be developed in order to expand the research in open sea.
{"title":"Development of an autonomous aquatic vehicle employed on special activities","authors":"G. T. de Paula, T. E. P. de Almeida, J. R. B. de A. Monteiro, M. P. de Santana, J. C. Faracco","doi":"10.1109/ESARS.2012.6387440","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387440","url":null,"abstract":"This paper describes the development of an autonomous marine vehicle based on a trimaran structure, introducing the ship structure, the main control system and each of the subsystems onboard, including energy storage system, propulsion and sensors equipment. The main goal is to achieve high effectiveness to extend the mission capabilities of the vehicle through several techniques such as combining motion control and energy control, applying hybrid propulsion of a permanent magnet synchronous machine and a sail. The vehicle that is under development will be employed, firstly, in marine protected areas, bays, reefs, reservoirs. Further, based on the experience with this vehicle, a new and bigger marine vehicle will be developed in order to expand the research in open sea.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"54 4 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":"114090459","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.2012.6387492
G. Romeo, F. Borello, E. Cestino
An all-electric General Aviation airplane was realized within the ENFICA-FC program (ENvironmentally Friendly Inter City Aircraft powered by Fuel Cells - EC funded project coordinated by Prof. Giulio Romeo). The electric-motor-driven two-seat airplane powered by fuel cells was developed and validated by flight-test in May 2010. The airplane represents the first and unique airplane flying in the world. Six test flights were successfully carried out by POLITO. The all-electrical power system was successfully tested during the experimental flights. Take-off and climbing was obtained at power of 35 kW. Level flight was attained at 150 km/h by mean of only a fuel cell power setting. 2.5 hours of effective flight were obtained during flight tests for a total path of 237 km. A new speed world record of 135 km/h and an endurance of 39 min. was established during flights conducted for the FAI Sporting Code Category C (airplane). The excellent results obtained by the flight tests can be considered as a further step in the European and World Aeronautics Science in introducing a completely clean energy (ZERO CO2 EMISSION). At the same time, more theoretical type studies have been carried out in designing an aircraft powered by hydrogen for 10-20 passengers in the regional and intercity sector”. The airplane works on hydrogen, taking advantage of the “fuel cell” technology at present available, to create an aircraft that is able to connect cities through flights while totally eliminating the environmental impact.
{"title":"Design of inter-city transport aircraft powered by fuel cell & flight test of zero emission 2-seater aircraft powered by fuel cells","authors":"G. Romeo, F. Borello, E. Cestino","doi":"10.1109/ESARS.2012.6387492","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387492","url":null,"abstract":"An all-electric General Aviation airplane was realized within the ENFICA-FC program (ENvironmentally Friendly Inter City Aircraft powered by Fuel Cells - EC funded project coordinated by Prof. Giulio Romeo). The electric-motor-driven two-seat airplane powered by fuel cells was developed and validated by flight-test in May 2010. The airplane represents the first and unique airplane flying in the world. Six test flights were successfully carried out by POLITO. The all-electrical power system was successfully tested during the experimental flights. Take-off and climbing was obtained at power of 35 kW. Level flight was attained at 150 km/h by mean of only a fuel cell power setting. 2.5 hours of effective flight were obtained during flight tests for a total path of 237 km. A new speed world record of 135 km/h and an endurance of 39 min. was established during flights conducted for the FAI Sporting Code Category C (airplane). The excellent results obtained by the flight tests can be considered as a further step in the European and World Aeronautics Science in introducing a completely clean energy (ZERO CO2 EMISSION). At the same time, more theoretical type studies have been carried out in designing an aircraft powered by hydrogen for 10-20 passengers in the regional and intercity sector”. The airplane works on hydrogen, taking advantage of the “fuel cell” technology at present available, to create an aircraft that is able to connect cities through flights while totally eliminating the environmental impact.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"38 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":"115690907","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.2012.6387434
O. Veneri, L. Ferraro, C. Capasso, D. Iannuzzi
This paper presents an overview of issues and technologies related to the proper design of charging infrastructures for road electric vehicles. The analysis is carried out taking into account that the recharging stations of electric vehicles might be integrated in smart grids, which interconnect the main grid with distributed power plants, different kinds of renewable energy sources, stationary electrical storage systems and electric loads. The study is introduced by an analysis of the main characteristics concerning different kinds of storage systems to be used for stationary and on-board applications. Then, different charging devices, modes and architectures are presented and described showing their characteristics and potentialities. DC and AC configurations of charging stations are compared in terms of the issues related to their impact on the main grid and the design of their main components. Specific attention was devoted also to the ultra-fast DC architecture, which appears a possible solution to positively affect a wide spread of plug-in hybrid and full electric road vehicles.
{"title":"Charging infrastructures for EV: Overview of technologies and issues","authors":"O. Veneri, L. Ferraro, C. Capasso, D. Iannuzzi","doi":"10.1109/ESARS.2012.6387434","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387434","url":null,"abstract":"This paper presents an overview of issues and technologies related to the proper design of charging infrastructures for road electric vehicles. The analysis is carried out taking into account that the recharging stations of electric vehicles might be integrated in smart grids, which interconnect the main grid with distributed power plants, different kinds of renewable energy sources, stationary electrical storage systems and electric loads. The study is introduced by an analysis of the main characteristics concerning different kinds of storage systems to be used for stationary and on-board applications. Then, different charging devices, modes and architectures are presented and described showing their characteristics and potentialities. DC and AC configurations of charging stations are compared in terms of the issues related to their impact on the main grid and the design of their main components. Specific attention was devoted also to the ultra-fast DC architecture, which appears a possible solution to positively affect a wide spread of plug-in hybrid and full electric road vehicles.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"24 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":"115733875","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.2012.6387413
T. Glasberger, M. Janda, V. Muzikova, J. Majorszky, Z. Peroutka
This paper presents a new method of frequency characteristic measurement for ac drives connected to a dc trolley-wire. The input part of a drive is composed of an input LC filter. The LC filter is a naturally almost undamped circuit and any change in the circuit (e.g. voltage drop or constant power taken from the circuit) causes dangerous capacitor voltage oscillations. This method helps to find dangerous resonant frequencies of the whole traction drive and it allows finding possible danger oscillations of the dc-link voltage appearing due the motor drive operation. Furthermore a method for dc-link capacitor voltage stabilization has been designed and employed in the permanent magnet synchronous motor drive. The stabilization effect of this method is verified in a using the direct torque control of the permanent magnet synchronous motor by simulations as well as by experimental evidence at a laboratory prototype of the traction drive with rated power 10 kW using the frequency characteristic measurement.
{"title":"Frequency analysis and stability enhancement of DTC controlled PMSM drive with input LC filter","authors":"T. Glasberger, M. Janda, V. Muzikova, J. Majorszky, Z. Peroutka","doi":"10.1109/ESARS.2012.6387413","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387413","url":null,"abstract":"This paper presents a new method of frequency characteristic measurement for ac drives connected to a dc trolley-wire. The input part of a drive is composed of an input LC filter. The LC filter is a naturally almost undamped circuit and any change in the circuit (e.g. voltage drop or constant power taken from the circuit) causes dangerous capacitor voltage oscillations. This method helps to find dangerous resonant frequencies of the whole traction drive and it allows finding possible danger oscillations of the dc-link voltage appearing due the motor drive operation. Furthermore a method for dc-link capacitor voltage stabilization has been designed and employed in the permanent magnet synchronous motor drive. The stabilization effect of this method is verified in a using the direct torque control of the permanent magnet synchronous motor by simulations as well as by experimental evidence at a laboratory prototype of the traction drive with rated power 10 kW using the frequency characteristic measurement.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"74 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":"129151777","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.2012.6387491
F. Migliardini, O. Veneri, P. Corbo
In this paper Fuel Cell Systems (FCS) based on H2/air Proton Exchange Membrane (PEM) stacks of 2.5 and 12 kW were experimentally analyzed with the aim to elucidate the system design and management concerns to be considered for automotive application. The effects of the main operative conditions on stack performance were preliminarily examined, while the experimental analysis of the overall FCS permitted the energy losses related to the main system components to be specified. The possible strategies for control of air feeding, fuel purge, cooling and membrane humidification were discussed, with particular reference to the interaction between some specific devices, such as rotary vane compressor and membrane humidifier, whose characteristics were evidenced to be compatible with automotive applications because of low energy consumption and reliable FCS performance.
{"title":"Management issues of direct hydrogen Fuel Cell Systems for application in automotive field","authors":"F. Migliardini, O. Veneri, P. Corbo","doi":"10.1109/ESARS.2012.6387491","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387491","url":null,"abstract":"In this paper Fuel Cell Systems (FCS) based on H2/air Proton Exchange Membrane (PEM) stacks of 2.5 and 12 kW were experimentally analyzed with the aim to elucidate the system design and management concerns to be considered for automotive application. The effects of the main operative conditions on stack performance were preliminarily examined, while the experimental analysis of the overall FCS permitted the energy losses related to the main system components to be specified. The possible strategies for control of air feeding, fuel purge, cooling and membrane humidification were discussed, with particular reference to the interaction between some specific devices, such as rotary vane compressor and membrane humidifier, whose characteristics were evidenced to be compatible with automotive applications because of low energy consumption and reliable FCS performance.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"31 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":"121616076","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.2012.6387441
C. S. Postiglione, D. Collier, B. S. Dupczak, M. Heldwein, A. Perin
This works presents a motor drive application for small passenger all electric vessels. The aim is the construction of a zero emission electric propulsion boat to be used for public transportation and water sports events. The boat is a wave-piercing Catamaran powered by lithium-ion batteries that are charged at the harbor and, partially, with photovoltaic panels for an increased range. A dc-dc converter is used to provide a steady dc-bus feeding multi-state switching cells based voltage source inverter that drive two 12 kW permanent magnet synchronous motors (PMSM).
{"title":"Propulsion system for an all electric passenger boat employing permanent magnet synchronous motors and modern power electronics","authors":"C. S. Postiglione, D. Collier, B. S. Dupczak, M. Heldwein, A. Perin","doi":"10.1109/ESARS.2012.6387441","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387441","url":null,"abstract":"This works presents a motor drive application for small passenger all electric vessels. The aim is the construction of a zero emission electric propulsion boat to be used for public transportation and water sports events. The boat is a wave-piercing Catamaran powered by lithium-ion batteries that are charged at the harbor and, partially, with photovoltaic panels for an increased range. A dc-dc converter is used to provide a steady dc-bus feeding multi-state switching cells based voltage source inverter that drive two 12 kW permanent magnet synchronous motors (PMSM).","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"10 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":"126369429","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.2012.6387380
J. Brombach, A. Lucken, B. Nya, M. Johannsen, D. Schulz
This paper deals with an integration of High Voltage DC (HVDC1) in the onboard power supply system. Conventional aircraft grids have a main voltage of 115 V AC (star voltage) with a variable frequency of 360...800 Hz. Newer aircraft try to integrate 230 V AC generators in the grid to save cable weight. With the “More Electric Aircraft”- concept HVDC grids could be integrated in future airplanes. In all concepts the airport infrastructure has to be considered. The ground power supply is based on mobile Ground Power Units (GPUs) or an inverter supplied by the airport grid (Fig. 1). The ground supply allocates 115 V AC with a fixed frequency of 400 Hz and a maximum power of 90 kVA per unit. Changing to an HVDC-grid has a lot of advantages. Higher voltage means lower cable weight. Furthermore, the electrical converter architecture can be optimized. Especially the converters inside the loads can be built much lighter when using a DC supply. This paper compares different possibilities of HVDC integration. Ancillary conditions like carbon fiber reinforced plastic fuselages and a possible ground power supply with conventional technology are taken into consideration. The attention is focused on an efficient cabin power supply. But to make a global assessment, the entire onboard power supply system is analyzed.
本文研究了高压直流(HVDC1)在车载电源系统中的集成。传统的飞机电网主电压为115 V AC(星电压)，变频为360…800赫兹。较新的飞机尝试在电网中集成230伏交流发电机，以节省电缆重量。有了“更多的电动飞机”概念，HVDC电网可以集成到未来的飞机上。在所有概念中都必须考虑机场基础设施。接地电源采用移动gpu (ground power unit)或机场网逆变器供电(如图1所示)，配置交流115v，固定频率400hz，最大功率90kva /台。改为高压直流电网有很多优点。电压越高，电缆重量越轻。此外，还可以优化电转换器的结构。特别是当使用直流电源时，负载内部的转换器可以建造得更轻。本文比较了高压直流一体化的不同可能性。辅助条件，如碳纤维增强塑料机身和可能的地面电源与传统技术进行了考虑。人们的注意力集中在高效的客舱电源上。但为了进行全局评估，对整个机载电源系统进行了分析。
{"title":"Comparison of different electrical HVDC-architectures for aircraft application","authors":"J. Brombach, A. Lucken, B. Nya, M. Johannsen, D. Schulz","doi":"10.1109/ESARS.2012.6387380","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387380","url":null,"abstract":"This paper deals with an integration of High Voltage DC (HVDC1) in the onboard power supply system. Conventional aircraft grids have a main voltage of 115 V AC (star voltage) with a variable frequency of 360...800 Hz. Newer aircraft try to integrate 230 V AC generators in the grid to save cable weight. With the “More Electric Aircraft”- concept HVDC grids could be integrated in future airplanes. In all concepts the airport infrastructure has to be considered. The ground power supply is based on mobile Ground Power Units (GPUs) or an inverter supplied by the airport grid (Fig. 1). The ground supply allocates 115 V AC with a fixed frequency of 400 Hz and a maximum power of 90 kVA per unit. Changing to an HVDC-grid has a lot of advantages. Higher voltage means lower cable weight. Furthermore, the electrical converter architecture can be optimized. Especially the converters inside the loads can be built much lighter when using a DC supply. This paper compares different possibilities of HVDC integration. Ancillary conditions like carbon fiber reinforced plastic fuselages and a possible ground power supply with conventional technology are taken into consideration. The attention is focused on an efficient cabin power supply. But to make a global assessment, the entire onboard power supply system is analyzed.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"65 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":"126093234","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.2012.6387381
B. Nya, J. Brombach, D. Schulz
In new aircraft architectures the electrical power is in perpetual growth, because the present hydraulic and pneumatic systems are being eliminated and replace by electrical systems. Therefore the increase of electrical power has to be managed. With the constantly increasing electrical power demand onboard of aircraft, new electrical voltage levels are actually alluded, in order to respond to these challenges. Many advantages of high voltage alternating current (HVAC) and high voltage direct current (HVDC) in the aircraft electrical power system (EPS), in compliance with the aviation's jargon, namely 230V AC constant or variable frequency and +/- 270V DC (or 540V DC between positive and negative potentials), are presented in comparison with the conventional 115V AC with constant or variable frequency and 28V DC ESP. The adoption of higher voltage levels must comply with the system requirements. Power quality, weight comparison as well as applicability are exhibited at power generation, distribution and load level. Issues regarding the simultaneous supply with HVAC and HVDC are discussed. Current technological research for these changes will be overviewed.
{"title":"Benefits of higher voltage levels in aircraft electrical power systems","authors":"B. Nya, J. Brombach, D. Schulz","doi":"10.1109/ESARS.2012.6387381","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387381","url":null,"abstract":"In new aircraft architectures the electrical power is in perpetual growth, because the present hydraulic and pneumatic systems are being eliminated and replace by electrical systems. Therefore the increase of electrical power has to be managed. With the constantly increasing electrical power demand onboard of aircraft, new electrical voltage levels are actually alluded, in order to respond to these challenges. Many advantages of high voltage alternating current (HVAC) and high voltage direct current (HVDC) in the aircraft electrical power system (EPS), in compliance with the aviation's jargon, namely 230V AC constant or variable frequency and +/- 270V DC (or 540V DC between positive and negative potentials), are presented in comparison with the conventional 115V AC with constant or variable frequency and 28V DC ESP. The adoption of higher voltage levels must comply with the system requirements. Power quality, weight comparison as well as applicability are exhibited at power generation, distribution and load level. Issues regarding the simultaneous supply with HVAC and HVDC are discussed. Current technological research for these changes will be overviewed.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"14 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":"122307598","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.2012.6387412
G. Boschetti, A. Mariscotti
Electromechanical analysis and simulation of traction systems are required to estimate the power consumption, to size the power system and to optimize system parameters for energy saving. The number of variables and parameters (mechanical and electrical) is huge, affected by various degrees of uncertainty. An integrated simulation approach is presented, where the requisites for the correct evaluation of regenerative capability are considered.
{"title":"Integrated electromechanical simulation of traction systems: Relevant factors for the analysis and estimation of energy efficiency","authors":"G. Boschetti, A. Mariscotti","doi":"10.1109/ESARS.2012.6387412","DOIUrl":"https://doi.org/10.1109/ESARS.2012.6387412","url":null,"abstract":"Electromechanical analysis and simulation of traction systems are required to estimate the power consumption, to size the power system and to optimize system parameters for energy saving. The number of variables and parameters (mechanical and electrical) is huge, affected by various degrees of uncertainty. An integrated simulation approach is presented, where the requisites for the correct evaluation of regenerative capability are considered.","PeriodicalId":243822,"journal":{"name":"2012 Electrical Systems for Aircraft, Railway and Ship Propulsion","volume":"173 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":"133607614","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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