Pub Date : 2015-03-03DOI: 10.1109/ESARS.2015.7101435
I. Szenasy, Z. Varga, Zoltán Szeli
For electric vehicles an applied control of PMSM is the flux weakening operation for extending the region over nominal speed on nominal voltage. This paper deals with these questions and its impacts. Proved methods increase the torque angle and the d axis directed component of the stator current vector reduces the main flux, but the eddy current loss developing in magnets became significant. These impacts and their reduction need several investigations. This paper preents the possibilities and limits of flux-weakening for a given PMSM, and gives a usable optimum control strategy on nominal power's region by varied speeds.
{"title":"Optimum control strategy for PMSM in field-weakening region by constant power","authors":"I. Szenasy, Z. Varga, Zoltán Szeli","doi":"10.1109/ESARS.2015.7101435","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101435","url":null,"abstract":"For electric vehicles an applied control of PMSM is the flux weakening operation for extending the region over nominal speed on nominal voltage. This paper deals with these questions and its impacts. Proved methods increase the torque angle and the d axis directed component of the stator current vector reduces the main flux, but the eddy current loss developing in magnets became significant. These impacts and their reduction need several investigations. This paper preents the possibilities and limits of flux-weakening for a given PMSM, and gives a usable optimum control strategy on nominal power's region by varied speeds.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126039681","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 : 2015-03-03DOI: 10.1109/ESARS.2015.7101481
E. Delgado, A. Barreiro, M. Díaz-Cacho, Pablo Falcón
The aim of the wheel slip controllers is to provide certain degree of slip on each wheel independently, maximizing the friction between the tire and road, avoiding simultaneously its lock and so it implements a braking control strategy to generate independent brake forces at each wheel. On the other hand, reset control is able to overcome fundamental limitations of linear and time invariant controllers, and thus a reset controller, a standard linear controller that, at some instants, resets to zero its internal states, may be designed to simultaneously improve speed of response and robustness. In this way an efficient solution can be enhanced by the application of reset controllers to brake systems. In a recent work presented by the authors is defined a wheel slip reset controller, based on a PI+CI controller, versatile and with a simple design, that simultaneously presents improved performance, decreasing the braking distance in several road conditions while maintaining as far as possible appropriate driving characteristics of the vehicle, and also is robust against technological limitations such as model uncertainties, actuator saturation and time delay in communications. This paper presents some ideas about the analysis and tuning of this wheel slip PI+CI reset controller.
{"title":"Performance analysis of wheel slip reset controller in brake systems","authors":"E. Delgado, A. Barreiro, M. Díaz-Cacho, Pablo Falcón","doi":"10.1109/ESARS.2015.7101481","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101481","url":null,"abstract":"The aim of the wheel slip controllers is to provide certain degree of slip on each wheel independently, maximizing the friction between the tire and road, avoiding simultaneously its lock and so it implements a braking control strategy to generate independent brake forces at each wheel. On the other hand, reset control is able to overcome fundamental limitations of linear and time invariant controllers, and thus a reset controller, a standard linear controller that, at some instants, resets to zero its internal states, may be designed to simultaneously improve speed of response and robustness. In this way an efficient solution can be enhanced by the application of reset controllers to brake systems. In a recent work presented by the authors is defined a wheel slip reset controller, based on a PI+CI controller, versatile and with a simple design, that simultaneously presents improved performance, decreasing the braking distance in several road conditions while maintaining as far as possible appropriate driving characteristics of the vehicle, and also is robust against technological limitations such as model uncertainties, actuator saturation and time delay in communications. This paper presents some ideas about the analysis and tuning of this wheel slip PI+CI reset controller.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125578504","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 : 2015-03-03DOI: 10.1109/ESARS.2015.7101454
S. Zeljkovic, Radovan Vuletic, Andreas Miller, Alann Denais
This paper presents a control algorithm of active power flow between traction battery and grid in a dual active bridge converter (DAB). Here, DAB is a part of a three phase 10kW bidirectional on-board charger in electric vehicles (EVs). It is an isolated interface to the battery placed after a three phase power factor correction (PFC) stage. 1200V rated SiC JFETs in the H-bridge at the DC link side of DAB enable operation at high voltage values of the DC link (above 500V) with high switching frequencies in the range from 50 to 150 kHz. Both high converter efficiency and simplified, compact converter design can be achieved thanks to the application of these wide band gap (WBG) devices. Furthermore, the control algorithm is presented to achieve the fast reference tracking even in the case when, due to simplicity of sensing, only average values of currents of both battery and DC link are being regulated.
{"title":"Control of SiC-based dual active bridge in high power three phase on-board charger of EVs","authors":"S. Zeljkovic, Radovan Vuletic, Andreas Miller, Alann Denais","doi":"10.1109/ESARS.2015.7101454","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101454","url":null,"abstract":"This paper presents a control algorithm of active power flow between traction battery and grid in a dual active bridge converter (DAB). Here, DAB is a part of a three phase 10kW bidirectional on-board charger in electric vehicles (EVs). It is an isolated interface to the battery placed after a three phase power factor correction (PFC) stage. 1200V rated SiC JFETs in the H-bridge at the DC link side of DAB enable operation at high voltage values of the DC link (above 500V) with high switching frequencies in the range from 50 to 150 kHz. Both high converter efficiency and simplified, compact converter design can be achieved thanks to the application of these wide band gap (WBG) devices. Furthermore, the control algorithm is presented to achieve the fast reference tracking even in the case when, due to simplicity of sensing, only average values of currents of both battery and DC link are being regulated.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131917601","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 : 2015-03-03DOI: 10.1109/ESARS.2015.7101479
S. Bozhko, S. Dymko, S. Kovbasa, S. Peresada
The paper deals with the development of novel vector control algorithms for traction induction motors drives. A direct field-oriented torque (speed) controller was designed using output-feedback linearizing technique. Controller guarantees asymptotic torque (speed) tracking and maximizes a torque per Ampere ratio in steady state. Nonlinear flux observer and torque-current maximization criterion take into consideration the effect of magnetic saturation hence improving the torque-flux tracking accuracy. The main advantage of the proposed controller is it's physics-based cascaded structure and simplicity of practical implementation. The experimental results confirm the developed theory as well as demonstrate the effectiveness of the proposed approach.
{"title":"MTA control for traction IM drives: Theory and experimental results","authors":"S. Bozhko, S. Dymko, S. Kovbasa, S. Peresada","doi":"10.1109/ESARS.2015.7101479","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101479","url":null,"abstract":"The paper deals with the development of novel vector control algorithms for traction induction motors drives. A direct field-oriented torque (speed) controller was designed using output-feedback linearizing technique. Controller guarantees asymptotic torque (speed) tracking and maximizes a torque per Ampere ratio in steady state. Nonlinear flux observer and torque-current maximization criterion take into consideration the effect of magnetic saturation hence improving the torque-flux tracking accuracy. The main advantage of the proposed controller is it's physics-based cascaded structure and simplicity of practical implementation. The experimental results confirm the developed theory as well as demonstrate the effectiveness of the proposed approach.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129611278","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 : 2015-03-03DOI: 10.1109/ESARS.2015.7101492
A. Quadrelli, G. Gigliucci, E. Pasca, Stefano Farnesi, Rino Gambuti, F. Flamingo, G. Bosia
Power Conditioning Systems (PCSs), also known as Active Filters or Custom Power, are innovative devices based on Power Electronics widely used on Medium Voltage (MV) and Low Voltage (LV) power transmission networks to improve the quality of power distribution and compensate local disturbances. Some of common features are improving the quality of the power supply of particularly sensitive loads to network disturbances, such voltage sag compensation or short interruptions, peak shaving, active power factor correction. Such type of devices, especially with the primary function of peak-shaving, are very suitable coupled with Electric Vehicle Quick Charging Stations (EVQCS) due the considerable power absorbed by them from the three-phase network (in our case 400 V-50 Hz) especially at the beginning of the charging (several kW for some minutes). In this way, the network will be relieved of high power peaks need that would cause an impact on utilities and necessary investments by the distributor. This paper describes an innovative power conditioning system with energetic storage based on Lithium-Ion Ultracapacitors which have high performance in terms of specific energy and long service life. The device is designed and built to be a support for an EVQCS. The prototype is actually installed in the experimental area of Enel Ingegneria e Ricerca, located in Livorno, where a series of tests has proven its functionality and benifts for the grid. Future tests will be dedicated on interaction with a Li-ion storage system to improve energy services.
电力调节系统(PCSs)，也称为有源滤波器或定制电源，是基于电力电子技术的创新设备，广泛应用于中压(MV)和低压(LV)输电网络，以提高配电质量和补偿局部干扰。一些共同的特点是提高对网络干扰特别敏感的负载的供电质量，如电压凹陷补偿或短时中断、调峰、有源功率因数校正。这种类型的设备，特别是具有调峰主要功能的设备，非常适合与电动汽车快速充电站(EVQCS)结合使用，因为它们从三相网络(在我们的案例中为400 V-50 Hz)吸收了相当大的功率，特别是在充电开始时(几分钟几千瓦)。通过这种方式，电网将摆脱对公用事业和分销商必要投资造成影响的高功率峰值需求。本文介绍了一种基于锂离子超级电容器的新型能量存储电力调节系统，该系统具有比能量高、使用寿命长的特点。该设备的设计和制造是为了支持EVQCS。该原型实际上安装在位于利沃诺的Enel Ingegneria e Ricerca实验区，在那里进行了一系列测试，证明了它的功能和对电网的好处。未来的测试将致力于与锂离子存储系统的相互作用，以改善能源服务。
{"title":"Power quality conditioning system based on Lithium-Ion Ultracapacitors for Electric Vehicles Quick Charging Stations","authors":"A. Quadrelli, G. Gigliucci, E. Pasca, Stefano Farnesi, Rino Gambuti, F. Flamingo, G. Bosia","doi":"10.1109/ESARS.2015.7101492","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101492","url":null,"abstract":"Power Conditioning Systems (PCSs), also known as Active Filters or Custom Power, are innovative devices based on Power Electronics widely used on Medium Voltage (MV) and Low Voltage (LV) power transmission networks to improve the quality of power distribution and compensate local disturbances. Some of common features are improving the quality of the power supply of particularly sensitive loads to network disturbances, such voltage sag compensation or short interruptions, peak shaving, active power factor correction. Such type of devices, especially with the primary function of peak-shaving, are very suitable coupled with Electric Vehicle Quick Charging Stations (EVQCS) due the considerable power absorbed by them from the three-phase network (in our case 400 V-50 Hz) especially at the beginning of the charging (several kW for some minutes). In this way, the network will be relieved of high power peaks need that would cause an impact on utilities and necessary investments by the distributor. This paper describes an innovative power conditioning system with energetic storage based on Lithium-Ion Ultracapacitors which have high performance in terms of specific energy and long service life. The device is designed and built to be a support for an EVQCS. The prototype is actually installed in the experimental area of Enel Ingegneria e Ricerca, located in Livorno, where a series of tests has proven its functionality and benifts for the grid. Future tests will be dedicated on interaction with a Li-ion storage system to improve energy services.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130970783","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 : 2015-03-03DOI: 10.1109/ESARS.2015.7101501
L. Fusco, M. Pagano
An essential step toward the development of intelligent and efficient technologies applied to complex systems is to provide self-diagnosing capability. For this to happen, sensors, data analysis, fault detection, and health assessment must be interconnected. This paper discusses on a predictive diagnostic strategy that can be used to monitor the aging of railway power converter units.
{"title":"An approach to design a prognostic based maintenance strategy for railway power converter unit","authors":"L. Fusco, M. Pagano","doi":"10.1109/ESARS.2015.7101501","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101501","url":null,"abstract":"An essential step toward the development of intelligent and efficient technologies applied to complex systems is to provide self-diagnosing capability. For this to happen, sensors, data analysis, fault detection, and health assessment must be interconnected. This paper discusses on a predictive diagnostic strategy that can be used to monitor the aging of railway power converter units.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132026746","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 : 2015-03-03DOI: 10.1109/ESARS.2015.7101504
P. Dost, P. Spichartz, C. Sourkounis
Most of the recent studies dealing with electric vehicles (EV) are based on assumptions in order to describe the behaviours of EV. To enhance the precision of these studies, data sets from real measurements are required. This paper shows EV consumptions which are based on measurements from a field test. This field test was realised with over 500 testing people who are a representative group for a greater population as present in Germany. The boundary conditions of the field test are explained in detail before the results are presented and discussed. The temperature effect on the consumption as well as the influence of the track length are illustrated separately for battery electric vehicles and extended range electric vehicles. Additionally details of consumption of different devices within the vehicle are shown.
{"title":"Temperature influence on state-of-the-art electric vehicles' consumption based on fleet measurements","authors":"P. Dost, P. Spichartz, C. Sourkounis","doi":"10.1109/ESARS.2015.7101504","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101504","url":null,"abstract":"Most of the recent studies dealing with electric vehicles (EV) are based on assumptions in order to describe the behaviours of EV. To enhance the precision of these studies, data sets from real measurements are required. This paper shows EV consumptions which are based on measurements from a field test. This field test was realised with over 500 testing people who are a representative group for a greater population as present in Germany. The boundary conditions of the field test are explained in detail before the results are presented and discussed. The temperature effect on the consumption as well as the influence of the track length are illustrated separately for battery electric vehicles and extended range electric vehicles. Additionally details of consumption of different devices within the vehicle are shown.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132403095","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 : 2015-03-03DOI: 10.1109/ESARS.2015.7101505
P. Spichartz, P. Dost, C. Sourkounis
Extended range electric vehicles offer the possibility to generate electrical energy with a setup of combustion engine and generator when the state of charge of the traction battery is low. As a result, the overall range can be extended to familiar values. The dimensioning of the purely electric range, i.e. the possible cruising range without use of the combustion engine, has much influence on the selling price and on the possible amortisation of the higher initial costs with respect to a comparable conventional car. In this paper, driven distances and consumptions of extended range electric vehicles which were measured during a field test are presented and discussed. The vehicles were used by private persons and by companies. A cost analysis is conducted to identify the necessary electric range for an early amortisation.
{"title":"Evaluation of electric range demands of EV and EREV on the basis of field test data","authors":"P. Spichartz, P. Dost, C. Sourkounis","doi":"10.1109/ESARS.2015.7101505","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101505","url":null,"abstract":"Extended range electric vehicles offer the possibility to generate electrical energy with a setup of combustion engine and generator when the state of charge of the traction battery is low. As a result, the overall range can be extended to familiar values. The dimensioning of the purely electric range, i.e. the possible cruising range without use of the combustion engine, has much influence on the selling price and on the possible amortisation of the higher initial costs with respect to a comparable conventional car. In this paper, driven distances and consumptions of extended range electric vehicles which were measured during a field test are presented and discussed. The vehicles were used by private persons and by companies. A cost analysis is conducted to identify the necessary electric range for an early amortisation.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"41 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133072440","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 : 2015-03-03DOI: 10.1109/ESARS.2015.7101535
M. Steurer, F. Bogdan, M. Bosworth, O. Faruque, J. Hauer, K. Schoder, M. Sloderbeck, D. Soto, K. Sun, M. Winkelnkemper, L. Schwager, P. Błaszczyk
The recent development of modular multilevel converters (MMC) provides new opportunities for medium voltage DC (MVDC) systems for all electric ship design and offshore wind parks. Therefore, the Center for Advanced Power Systems at Florida State University has recently commissioned a new MVDC power-hardware-in-the-loop laboratory rated at 5 MW at DC voltages between 6...24 kV. The new lab features four individual MMCs, each composed of 36 full-bridge cells, and capable of delivering 210 A at 0...6 kV. This paper describes the entire system in detail, including the advanced current and voltage control concepts along with the state of the art digital control hardware. Selected commissioning results demonstrate the performance of the system under dynamic conditions and provide comparison with simulations obtained from a corresponding controller hardware-in-the-loop setup which is also described in the paper.
{"title":"Multifunctional megawatt scale medium voltage DC test bed based on modular multilevel converter (MMC) technology","authors":"M. Steurer, F. Bogdan, M. Bosworth, O. Faruque, J. Hauer, K. Schoder, M. Sloderbeck, D. Soto, K. Sun, M. Winkelnkemper, L. Schwager, P. Błaszczyk","doi":"10.1109/ESARS.2015.7101535","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101535","url":null,"abstract":"The recent development of modular multilevel converters (MMC) provides new opportunities for medium voltage DC (MVDC) systems for all electric ship design and offshore wind parks. Therefore, the Center for Advanced Power Systems at Florida State University has recently commissioned a new MVDC power-hardware-in-the-loop laboratory rated at 5 MW at DC voltages between 6...24 kV. The new lab features four individual MMCs, each composed of 36 full-bridge cells, and capable of delivering 210 A at 0...6 kV. This paper describes the entire system in detail, including the advanced current and voltage control concepts along with the state of the art digital control hardware. Selected commissioning results demonstrate the performance of the system under dynamic conditions and provide comparison with simulations obtained from a corresponding controller hardware-in-the-loop setup which is also described in the paper.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126318828","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}
Secondary Eddy loss accounts for over 80% of the total loss of High-Temperature Superconducting (HTS) Linear Induction Motor (LIM) used in rail transit system, it is therefore of great significance to investigate the influence of the material electromagnetic properties on HTS LIM. In the paper, a newly proposed copper-iron (Cu-Fe) alloy is utilized to develop the secondary of HTS LIM. The four schemes of material electromagnetic properties are set up to comparatively analyze the electromagnetic distribution and performances of HTS LIM. The four schemes are aluminum reaction sheet-iron back iron, aluminum reaction sheet-steel No. 45 back iron, 16% Cu-Fe alloy (16% copper in weight) secondary, and 20% Cu-Fe alloy (20% copper in weight) secondary, respectively. Firstly, the electrical and magnetic properties of the main materials used in HTS LIM are investigated by experiments, respectively. And then three-dimensional transient (3-D) time-stepping finite element model of HTS LIM is established and the boundary conditions are given. The experimental results, carried out on the developed 3.5kW HTS LIM prototype, are shown to validate the accuracy of the established 3-D finite element model. The electromagnetic field and eddy current field distributions are studied by the established 3-D finite element model. The flux density around the HTS coils is also studied. On the basis of the field analysis, performances such as RMS phase current, thrust, power factor, etc. of the machine with the four secondary material schemes under different slips are investigated.
{"title":"Influence of material electromagnetic properties on HTS Linear Induction Motor used in rail transit","authors":"Dong Li, Weili Li, Junci Cao, Jin Fang, Jinyang Li, Jiafeng Shen","doi":"10.1109/ESARS.2015.7101433","DOIUrl":"https://doi.org/10.1109/ESARS.2015.7101433","url":null,"abstract":"Secondary Eddy loss accounts for over 80% of the total loss of High-Temperature Superconducting (HTS) Linear Induction Motor (LIM) used in rail transit system, it is therefore of great significance to investigate the influence of the material electromagnetic properties on HTS LIM. In the paper, a newly proposed copper-iron (Cu-Fe) alloy is utilized to develop the secondary of HTS LIM. The four schemes of material electromagnetic properties are set up to comparatively analyze the electromagnetic distribution and performances of HTS LIM. The four schemes are aluminum reaction sheet-iron back iron, aluminum reaction sheet-steel No. 45 back iron, 16% Cu-Fe alloy (16% copper in weight) secondary, and 20% Cu-Fe alloy (20% copper in weight) secondary, respectively. Firstly, the electrical and magnetic properties of the main materials used in HTS LIM are investigated by experiments, respectively. And then three-dimensional transient (3-D) time-stepping finite element model of HTS LIM is established and the boundary conditions are given. The experimental results, carried out on the developed 3.5kW HTS LIM prototype, are shown to validate the accuracy of the established 3-D finite element model. The electromagnetic field and eddy current field distributions are studied by the established 3-D finite element model. The flux density around the HTS coils is also studied. On the basis of the field analysis, performances such as RMS phase current, thrust, power factor, etc. of the machine with the four secondary material schemes under different slips are investigated.","PeriodicalId":287492,"journal":{"name":"2015 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115102914","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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