IET Electrical Systems in Transportation最新文献_第9页

Voltage distribution indices method to analyse the performance of various structures of stray current collectors in direct current transit lines 直流输电线路中杂散电流收集器各种结构性能分析的电压分布指标法

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-06-10 DOI: 10.1049/els2.12027

Ebrahim Zare Juybari, Reza Keypour, Mohsen Niasati

{"title":"Voltage distribution indices method to analyse the performance of various structures of stray current collectors in direct current transit lines","authors":"Ebrahim Zare Juybari, Reza Keypour, Mohsen Niasati","doi":"10.1049/els2.12027","DOIUrl":"10.1049/els2.12027","url":null,"abstract":"The stray current produced by a direct current (DC) transit system leads to the corrosion of rails and metallic structures buried under and around the metro line. One practical approach to diminish current injection into buried structures is to implement stray current collectors underneath the rail. An analytical method is proposed herein using voltage distribution indices (VDIs) to calculate the voltage and current collection level of each collector located under the rail soil, and the solutions are validated by comparing with modelling results. The proposed method helps to achieve the voltage of different points under the ground and the current reaching the collectors using a circuit model, without facing the limitations of practical methods, as a supplementary study for experimental tests. Moreover, the effect of different arrangements of collectors under running rails is modelled. The analytical method is deployed considering two objectives, that is stray current collection by the conductors and a reduction in the installation cost of the conductors. Various arrangements of stray current collectors are compared and evaluated. Using integral and matrix equations, current density and potential at different points under the soil are calculated and the obtained results are compared with European (EN) standards.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 4","pages":"322-332"},"PeriodicalIF":2.3,"publicationDate":"2021-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44579191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Onboard energy storage in rail transport: Review of real applications and techno-economic assessments 铁路运输车载储能：实际应用和技术经济评估综述

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-06-09 DOI: 10.1049/els2.12026

Emanuele Fedele, Diego Iannuzzi, Andrea Del Pizzo

{"title":"Onboard energy storage in rail transport: Review of real applications and techno-economic assessments","authors":"Emanuele Fedele, Diego Iannuzzi, Andrea Del Pizzo","doi":"10.1049/els2.12026","DOIUrl":"10.1049/els2.12026","url":null,"abstract":"Despite low energy and fuel consumption levels in the rail sector, further improvements are being pursued by manufacturers and operators. Their primary efforts aim to reduce traction energy demand, replace diesel, and limit the impact of electrified overhead infrastructures. From a system-level perspective, the integration of alternative energy sources on board rail vehicles has become a popular solution among rolling stock manufacturers. Surveys are made of many recent realizations of multimodal rail vehicles with onboard electrochemical batteries, supercapacitors, and hydrogen fuel cell systems. The ratings, technical features, and operating data of onboard sources are gathered for each application, and a comparison among different technologies is presented. Traction system architectures and energy-control strategies of actual multimodal units are explored and compared with literature research. Moreover, the maturity and potential of recent technologies and alternative topologies of power converters for multimodal traction systems are discussed. Ultimately, onboard storage systems are compared with other solutions for energy-saving and catenary-free operation, with particular focus on their current techno-economic attractiveness as an alternative to diesel propulsion.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 4","pages":"279-309"},"PeriodicalIF":2.3,"publicationDate":"2021-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43324582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 21

Harmonic analysis of traction power supply system: case study of Addis Ababa light rail transit 牵引供电系统谐波分析——以亚的斯亚贝巴轻轨交通为例

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-05-21 DOI: 10.1049/els2.12019

Shimelis Atli Assefa, Asegid Belay Kebede, Demissu Legese

{"title":"Harmonic analysis of traction power supply system: case study of Addis Ababa light rail transit","authors":"Shimelis Atli Assefa, Asegid Belay Kebede, Demissu Legese","doi":"10.1049/els2.12019","DOIUrl":"https://doi.org/10.1049/els2.12019","url":null,"abstract":"Addis Ababa, the capital of Ethiopia, inaugurated the first electrified light rail transitsystem 4 years ago in September 2015, which makes it the first of its kind in sub-Saharan and eastern African countries. The railway line has a total length of 34.25 km with 39 passenger stations and 19 traction substations. Currently, the performance of the traction power supply system degraded severely due to the existence of harmonics in the traction network. Realizing the above problem, the harmonic analysis of Addis Ababa light rail transit electrified power supply system is presented. The analysis is performed on one of the substations called ‘Lideta’ rectifier substation. To this end, mathematical modelling and analysis of the traction main components such as the catenary, the traction transformer, the traction rectifier and the load have been done. Finally, MATLAB simulation has been performed, and the result comes with a significant reduction in harmonic distortion, which is far below the 5% limits of IEEE standard.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 4","pages":"391-404"},"PeriodicalIF":2.3,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"109172719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis 基于数值和实验分析的电气化铁路双受电弓架空接触线稳定臂阻尼器研制

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-04-16 DOI: 10.1049/els2.12024

Wenping Chu, Yang Song, Fuchuan Duan, Zhigang Liu

{"title":"Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis","authors":"Wenping Chu, Yang Song, Fuchuan Duan, Zhigang Liu","doi":"10.1049/els2.12024","DOIUrl":"10.1049/els2.12024","url":null,"abstract":"To improve the carrying capacity, double pantographs are normally used to collect the electric current from the catenary. The mechanical wave excited by the leading pantograph affects the contact of the trailing pantograph and the contact wire, which usually deteriorates the current collection quality. To address this issue, a steady arm damper is developed in this work to reduce the wave intensity caused by the leading pantograph. The catenary is modelled by Absolute Nodal Coordinate Formulation. The numerical simulations indicate that the steady arm damper with certain values reduces the contact force variation of the trailing pantograph. But overlarge damping may behave as a hard spot and aggravates the interaction performance. The acceptable steady arm damping should be lower than 300 Ns/m. The optimal value of the steady arm damping coefficient varies with the train speed. The realistic damping ratio should be determined based on the operating speed of a railway line. Based on the simulation results, several realistic steady arm dampers are developed, which are placed between the cantilever and the end of the steady arm. An experimental test is conducted to investigate the effect of the steady arm damper on the reduction of vibration caused by the dropping sinker. The experimental results demonstrate that the steady arm damper can reduce the mechanical wave amplitude and eliminate its effect on the trailing pantograph.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 3","pages":"269-277"},"PeriodicalIF":2.3,"publicationDate":"2021-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48371583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Performance enhancement of powertrain DC–DC converter using variable inductor 使用可变电感提高动力系DC-DC转换器的性能

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-04-09 DOI: 10.1049/els2.12014

Mebrahtom W. Beraki, João Pedro F. Trovão, Marina S. Perdigão

{"title":"Performance enhancement of powertrain DC–DC converter using variable inductor","authors":"Mebrahtom W. Beraki, João Pedro F. Trovão, Marina S. Perdigão","doi":"10.1049/els2.12014","DOIUrl":"10.1049/els2.12014","url":null,"abstract":"Performance enhancement of a powertrain DC–DC converter is provided using a current-controlled magnetic device, the variable inductor (VI). The VI is composed of two groups of windings, main and auxiliary. The auxiliary winding is used to regulate the permeability of the magnetic core over a wide range of load variations. To regulate the saturation level of the magnetic core and avoid postsaturation operation of the power inductor, an appropriate level of auxiliary winding current is needed. To this end, a simple and dynamic strategy is proposed to estimate the auxiliary winding currents of the VI. The proposed approach is validated using simulation studies of a large-scale VI-based powertrain DC–DC converter. The results reveal the significance of the proposed approach in continuous regulation of the magnetic property of the power inductor core, enhancing powertrain DC–DC converter performance by up to 13.70% and reducing stress on switching devices by 17.87%. Furthermore, energy source current variation is reduced by 6.73%, leading to reduced stress on energy storage systems.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 2","pages":"161-170"},"PeriodicalIF":2.3,"publicationDate":"2021-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48110360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

New trends in electric motors and selection for electric vehicle propulsion systems 电动机的新趋势和电动汽车推进系统的选择

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-04-09 DOI: 10.1049/els2.12018

Sreedhar Madichetty, Sukumar Mishra, Malabika Basu

{"title":"New trends in electric motors and selection for electric vehicle propulsion systems","authors":"Sreedhar Madichetty, Sukumar Mishra, Malabika Basu","doi":"10.1049/els2.12018","DOIUrl":"https://doi.org/10.1049/els2.12018","url":null,"abstract":"The increase in the numbers of electric vehicles (EVs) is seen as an upgrading of the existing vehicles for various reasons. This calls for an in-depth analysis of the heart of these vehicles—the motor. A motor in an electric vehicle propulsion system is a crucial component that has the ability to affect the efficiency, weight, cost, reliability, power output and performance. Hence a detailed comparative study, that compares the existing types and topologies of various motors, is the need of the hour. The various motors that can be used in electric traction, namely DC, induction, switched reluctance, permanent magnet brushless AC motors and permanent magnet brushless DC motors, are reviewed in view of their capabilities with respect to EV propulsion. A detailed review is presented of existing motors and the application of power electronic techniques to EVs, and recommendations for some new designs of brushless DC motors. These include permanent magnet hybrid motors, permanent magnet spoke motors and permanent magnet inset motors.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 3","pages":"186-199"},"PeriodicalIF":2.3,"publicationDate":"2021-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"109165943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and validation of an automatic all-wheel steering system for multiple-articulated rubber-tire transit 用于多关节橡胶轮胎运输的全轮自动转向系统的开发和验证

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-04-09 DOI: 10.1049/els2.12023

Jianghua Feng, Yunqing Hu, Xiwen Yuan, Ruipeng Huang, Xinrui Zhang, Lei Xiao

{"title":"Development and validation of an automatic all-wheel steering system for multiple-articulated rubber-tire transit","authors":"Jianghua Feng, Yunqing Hu, Xiwen Yuan, Ruipeng Huang, Xinrui Zhang, Lei Xiao","doi":"10.1049/els2.12023","DOIUrl":"10.1049/els2.12023","url":null,"abstract":"When driving a 32-m long multi-set rubber-tire transit in a manual driving mode, it is easy for the driver to feel tired due to the massive concentration, and it is hard to manually operate in a narrow and twist gauge. The authors introduce a six-axle coordinated automatic all-wheel steering control system and its design method is based on the visual perception and the geometric relationship. First, the functions of the two subsystems of the full-axle automatic steering control system are introduced. One subsystem is a path tracking control system and the other subsystem is a trajectory following the control system. Secondly, the theoretical principles of the two control systems are introduced in detail. Then, the controller design method of the two subsystems is introduced. Finally, the simulation results of Trucksim and MATLAB/Simulink are compared with the actual vehicle test data to test the controller’s perception and the follow-up control effect. It can be concluded that the gap between the platform and the train is kept between a relatively 10∼20 cm narrow when the train pulls in and out of the station. When the train runs at a high speed, it is stabilised at 72 km/h, and the lateral deviation from the virtual track centreline is controlled within ±15 cm.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 3","pages":"227-240"},"PeriodicalIF":2.3,"publicationDate":"2021-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43069379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Development of an adaptive neuro-fuzzy inference system–based equivalent consumption minimisation strategy to improve fuel economy in hybrid electric vehicles 开发一种基于自适应神经模糊推理系统的等效油耗最小化策略，以提高混合动力电动汽车的燃油经济性

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-03-30 DOI: 10.1049/els2.12020

Krishna Veer Singh, Hari Om Bansal, Dheerendra Singh

{"title":"Development of an adaptive neuro-fuzzy inference system–based equivalent consumption minimisation strategy to improve fuel economy in hybrid electric vehicles","authors":"Krishna Veer Singh, Hari Om Bansal, Dheerendra Singh","doi":"10.1049/els2.12020","DOIUrl":"10.1049/els2.12020","url":null,"abstract":"The most viable option to achieve the goals of saving energy and protecting the environment is to replace conventional vehicles with hybrid electric vehicles (HEVs). In HEVs, the operational characteristics of an internal combustion engine (ICE) and an electric motor (EM) are different from each other and thus require an adaptive control strategy to achieve higher fuel economy along with smooth operation and better performance of the vehicle. An energy management control strategy is proposed for an HEV based on an adaptive network-based fuzzy inference system (ANFIS). The proposed adaptive equivalent consumption minimisation strategy decides the power to be drawn from ICE and EM based on input parameters such as the speed of the vehicle, the state of charge of the battery, the EM torque and the ICE torque. The whole system is simulated in an advanced vehicle simulator tool. The proposed non-linear controller has also been tested for real-time behaviour using a field-programmable gate array–based MicroLabBox hardware controller to compare its performance against existing controllers. The authors compared the fuel economy obtained using the proposed method with several other methods available in the literature. The comparison clearly reveals that the proposed ANFIS-based method results in better optimization of energy and hence offers better fuel economy. The urban dynamometer driving schedule has been employed for this analysis.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 3","pages":"171-185"},"PeriodicalIF":2.3,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46375699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Advanced Speed-and-current control approach for dynamic electric car modelling 先进的速度和电流控制方法的动态电动汽车建模

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-03-30 DOI: 10.1049/els2.12015

Buddhadeva Sahoo, Sangram Keshari Routray, Pravat Kumar Rout

{"title":"Advanced Speed-and-current control approach for dynamic electric car modelling","authors":"Buddhadeva Sahoo, Sangram Keshari Routray, Pravat Kumar Rout","doi":"10.1049/els2.12015","DOIUrl":"10.1049/els2.12015","url":null,"abstract":"Considering environmental conditions and reduced fuel availability, electric cars (ECs) play a vital role in many applications such as consumer cars and short-distance transportation. This paper proposes a detailed dynamic modelling of battery, motor, and inverter developed for the design of an EC. In addition, an improved controller is developed with a different geometrical method using the sensitivity gain of the current sensor and tachometer to assure the optimal performance of the EC. For achieving linear vehicle operation and improved stability, a system transfer function model is designed by considering various uncertainties such as force acting on the car, wheel, road, and wind speed conditions. To offer better regulation and excellent tracking operation of the EC, a combined proportional–integral–derivative controller-based outer-speed and inner-current control approach is suggested to regulate the nonlinear parameters for different driving profile applications. The proposed designed control approach and system model are tested using two input conditions such as step and driving profile inputs through MATLAB/Simulink software, and performance is analysed through various open-loop and closed-loop test scenarios.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 3","pages":"200-217"},"PeriodicalIF":2.3,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44829119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Planning of electric vehicle charging stations and distribution system with highly renewable penetrations 具有高度可再生贯穿件的电动汽车充电站和配电系统的规划

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-03-25 DOI: 10.1049/els2.12022

Jingqi Zhang, Shu Wang, Cuo Zhang, Fengji Luo, Zhao Yang Dong, Yingliang Li

{"title":"Planning of electric vehicle charging stations and distribution system with highly renewable penetrations","authors":"Jingqi Zhang, Shu Wang, Cuo Zhang, Fengji Luo, Zhao Yang Dong, Yingliang Li","doi":"10.1049/els2.12022","DOIUrl":"10.1049/els2.12022","url":null,"abstract":"With the increasing prevalence of electric vehicles (EVs), the EV charging station (EVCS) and power distribution have become a coupled physical system. A multi-objective planning model is developed herein for the sizing and siting of EVCSs and the expansion of a power distribution network with high wind power penetration. The objectives of the planning model are to minimise the total cost of investment and energy losses of the distribution system while maximising the total captured traffic flow. The uncertainties associated with wind power sources are considered. Additionally, the uncertainties in EV daily charging loads are also important concerns in the optimisation of the planning model. To model the EV load uncertainties, a recent scenario generation (SG) method is adopted. Further, a multi-objective optimisation tool, Multi-Objective Natural Aggregation Algorithm (MONAA), is introduced to obtain the final solutions of the planning model. The simulations based on coupled 54-node distribution network and 25-node traffic network systems are conducted to verify the efficiency of the proposed model and the effectiveness of SG-based MONAA.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"11 3","pages":"256-268"},"PeriodicalIF":2.3,"publicationDate":"2021-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44367582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11