IET Electrical Systems in Transportation最新文献_第5页

Multi-state unified calculation model of rail potential and stray current in DC railway systems 直流铁路系统轨道电位和杂散电流的多态统一计算模型

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2023-02-03 DOI: 10.1049/els2.12070

Guifu Du, Zixuan Zheng, Qiaoyue Li, Fengchuan Xu, Tianye Zhang, Dongliang Zhang, Xiaoping Zhang, Weiguo Huang

{"title":"Multi-state unified calculation model of rail potential and stray current in DC railway systems","authors":"Guifu Du, Zixuan Zheng, Qiaoyue Li, Fengchuan Xu, Tianye Zhang, Dongliang Zhang, Xiaoping Zhang, Weiguo Huang","doi":"10.1049/els2.12070","DOIUrl":"10.1049/els2.12070","url":null,"abstract":"In order to calculate the dynamic distribution of rail potential and stray current accurately, a multi-state unified calculation model of rail potential and stray current is proposed, and the characteristics of different protection devices and reflux system in multi-state DC railway systems are analysed. In the proposed model, the multi-state characteristics of the traction substation, train, protection devices and reflux system are uniformly simulated by unified node models. The mixed simulation parameters of the catenary and reflux system are unified to lumped parameter networks, and the multi-node voltage equations are established based on the simulation model. Then, the power flow of DC railway systems is calculated using an iterative solution, and the dynamic distribution of rail potential and stray current are solved by differential equations. The multi-state unified calculation model is built and the distribution of rail potential and stray current in different conditions are simulated based on the parameters of Wuxi Subway Line 2. In order to verify the multi-state unified calculation model proposed, field tests and simulations are carried out. Results show that the multi-state unified calculation model can unify the complex states of DC railway systems and calculate the distribution of rail potential and stray current accurately.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"13 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46797273","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

Enhanced clustering based routing protocol in vehicular ad-hoc networks 车载自组织网络中增强的基于集群的路由协议

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2023-01-13 DOI: 10.1049/els2.12069

Afia Naeem, Muhammad Rizwan, Shtwai Alsubai, Ahmad Almadhor, Md. Akhtaruzzaman, Shayla Islam, Hameedur Rahman

{"title":"Enhanced clustering based routing protocol in vehicular ad-hoc networks","authors":"Afia Naeem, Muhammad Rizwan, Shtwai Alsubai, Ahmad Almadhor, Md. Akhtaruzzaman, Shayla Islam, Hameedur Rahman","doi":"10.1049/els2.12069","DOIUrl":"10.1049/els2.12069","url":null,"abstract":"A vehicular ad-hoc network (VANET) is derived from a mobile ad-hoc network that is a part of less infrastructure network design. Vehicular communication in VANET can be achieved using vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communication. A vehicle communicates with other vehicles through onboard units while communicating with roadside units in an infrastructure mode. Secure clustering is required for the communication between nodes in the whole network. The fundamental problem with the VANET is the instability of the network that occurs due to vehicles' mobile nature, which decreases the network's efficiency. This research proposes an enhanced cluster-based lifetime protocol ECBLTR that focuses on maximising the network's stability of routing and average throughput. The Sugeno model fuzzy inference system is used for assessing the cluster head (CH) that takes residual energy, local distance, node degree, concentration, and distance from the base station as input parameters. Our enhanced routing protocol shows that the proper channel model with an efficient routing protocol enhances the link throughput of the VANET for fixed network size. Our results show an efficient selection method of CH through the fuzzy system and a 10% increase in network lifetime. Furthermore, performance evaluation also demonstrates the impact of network sizes and routing protocols on packet delivery ratio and packet loss, average end-to-end delay, and overhead transmission.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"13 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12069","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43052001","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: 10

Retracted: Cable tunnel unmanned aerial vehicle location and navigation method based on ultra wideband and depth camera fusion 收回：基于超宽带和深度相机融合的电缆隧道无人机定位和导航方法

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2023-01-13 DOI: 10.1049/els2.12068

Guanghua He, Xueling Huang, Yahui Xu, Jun Qin, Ke Sun

{"title":"Retracted: Cable tunnel unmanned aerial vehicle location and navigation method based on ultra wideband and depth camera fusion","authors":"Guanghua He, Xueling Huang, Yahui Xu, Jun Qin, Ke Sun","doi":"10.1049/els2.12068","DOIUrl":"https://doi.org/10.1049/els2.12068","url":null,"abstract":"With the increasing demand for electric energy, more and more cities are constructing cable tunnels. In order to prevent the cable in the tunnel from being damaged, regular inspection of the cable tunnel is very important. However, due to the large scale of cable tunnel construction, the traditional manual inspection is difficult to meet the maintenance requirements. With the development of intelligent technology, the intelligent patrol mode of UAV has gradually replaced the traditional manual patrol mode and become the main patrol mode of cable tunnel. Therefore, the positioning and navigation method of cable tunnel UAV is studied in this paper. By using UWB localization algorithm and depth camera fusion, the positioning and navigation methods of UAVs are determined and compared with the positioning algorithm based on optical flow. Experimental comparison results show that the maximum and minimum yaw angles of UAV positioning based on the proposed algorithm are 2.41° and 0.16°, while the maximum and minimum yaw angles of UAV positioning based on the comparison algorithm are 3.11° and 1.51°. It can be seen that the integration of UWB and depth camera is of great significance for the research of positioning and navigation methods of cable tunnel UAVs.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"13 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50150344","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

Cable tunnel unmanned aerial vehicle location and navigation method based on ultra wideband and depth camera fusion 基于超宽带与深度摄像机融合的电缆隧道无人机定位导航方法

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2023-01-13 DOI: 10.1049/els2.12068

G. He, Xueling Huang, Yahui Xu, Jun Qin, Ke Sun

引用次数: 0

Radical technology innovations for high-speed transport; ePlanes to replace rail? 高速运输的激进技术创新；ePlanes取代铁轨？

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2023-01-06 DOI: 10.1049/els2.12061

Paul H. Riley, Michele Degano, Chris Gerada

引用次数: 0

Analysis of power quality and economic worthiness of electric motorcycle charging in a residential electrical system 住宅电气系统中电动摩托车充电的电能质量和经济价值分析

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2023-01-06 DOI: 10.1049/els2.12066

Pathomthat Chiradeja, Atthapol Ngaopitakkul

{"title":"Analysis of power quality and economic worthiness of electric motorcycle charging in a residential electrical system","authors":"Pathomthat Chiradeja, Atthapol Ngaopitakkul","doi":"10.1049/els2.12066","DOIUrl":"10.1049/els2.12066","url":null,"abstract":"In the urban society of Thailand, most people use motorcycles for travelling because they can meet the manoeuvrability of travelling in short distances and save energy compared to using a car. Many people are switching to electric motorcycles (EMCs), which install EMC chargers in their residential buildings. EMC chargers are power electronic devices that may produce electrical and electromagnetic interference; therefore, it is critical to evaluate the potential influence of an EMC charger on a household electrical system and other electrical equipment before installing one. Therefore, this study examined the effects of an EMC charger on residential electrical systems with and without a photovoltaic system connection as well as on individual load types in terms of power quality. The investigation revealed that EMC charging has a direct impact on the grid system's reactive power, power factor, and current harmonics. However, when the electrical load in the system has sufficient power, it is possible to reduce the reactive power and current harmonics of the grid. The cost of electricity when an EMC is connected to a residential electrical system was also analysed to determine the metre type and charging interval suitable for Thailand.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"13 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12066","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43155660","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

A H-type architecture for electric/hybrid-electric aircraft propulsion systems 电动/混合电动飞机推进系统的H型结构

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2023-01-05 DOI: 10.1049/els2.12065

Anil Kumar Reddy Siddavatam, Kaushik Rajashekara, Ravi Prakash Reddy, Hao Huang, Harish S. Krishnamoorthy, Fred Wang

{"title":"A H-type architecture for electric/hybrid-electric aircraft propulsion systems","authors":"Anil Kumar Reddy Siddavatam, Kaushik Rajashekara, Ravi Prakash Reddy, Hao Huang, Harish S. Krishnamoorthy, Fred Wang","doi":"10.1049/els2.12065","DOIUrl":"10.1049/els2.12065","url":null,"abstract":"In this paper, an H-type electric/hybrid electric aircraft propulsion architecture is proposed to address the issues associated with the radial electric propulsion architecture. In a radial architecture, a fault on the main bus or failure of the generator leads to shut down of all the propulsion motors in that channel, thus increasing the burden on the remaining motors to maintain the power required by the aeroplane. As a result, it is necessary to oversize the motors for the purpose of compensating for the loss of other motors. To mitigate these issues, a new H-type architecture is introduced to isolate the particular faulty section while still maintaining power flow to the remaining healthy motors. The proposed architecture minimises the oversizing of various components in the system as compared to radial propulsion architecture. The sizing of components and the amount of overall mass reduction is discussed by using the proposed architecture. Typhoon Hardware in the Loop platform is used to validate the performance of both the architectures for faults at different locations, and the results are presented.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"13 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47987785","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

Optimal semi-dynamic traffic and power flow assignment of coupled transportation and power distribution systems for electric vehicles 电动汽车输配电耦合系统的最优半动态交通和潮流分配

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2022-12-16 DOI: 10.1049/els2.12064

Qiang Zhao, Zhenfan Wei, Hui Liu, Yinghua Han, Jinkuan Wang

{"title":"Optimal semi-dynamic traffic and power flow assignment of coupled transportation and power distribution systems for electric vehicles","authors":"Qiang Zhao, Zhenfan Wei, Hui Liu, Yinghua Han, Jinkuan Wang","doi":"10.1049/els2.12064","DOIUrl":"https://doi.org/10.1049/els2.12064","url":null,"abstract":"As the most promising alternative to internal combustion engines (ICEs), electric vehicles (EVs) have an excellent development outlook. The charging route scheduling of EVs can simultaneously affect traffic congestion in the transportation network (TN) and power flow distribution in the power distribution network (PDN). The research on TN and PDN coupling networks based on the static traffic flow model is relatively mature; however, it ignores that the traffic flow will spread across periods in a short scheduling period. In this paper, a semi-dynamic traffic flow model is proposed to represent the dynamic propagation characteristics of EVs and ICEs flow. Furthermore, the cost of carbon emission and system operation are combined as the overall goal of system optimisation. Since the model has become a more complex non-linear model, this paper proposes to combine the heuristic sequential boundary tightening and binary expansion method to linearise the model. The study compared four cases and found that a 20% penetration rate of EVs can reduce carbon emissions by 4.2% while reducing the system's total cost by 10%. Moreover, the impact of network congestion on the spatiotemporal distribution of traffic flow and power flow in the coupled network is alleviated.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"13 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12064","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50151247","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

Optimal semi‐dynamic traffic and power flow assignment of coupled transportation and power distribution systems for electric vehicles 电动汽车运输与配电耦合系统的最优半动态交通与潮流分配

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2022-12-16 DOI: 10.1049/els2.12064

Qiang Zhao, Zhenfan Wei, Hui Liu, Yinghua Han, Jinkuan Wang

引用次数: 0

Mitigating the impact of fast charging on distribution grids using vehicle-to-vehicle power transfer: A Paris city case study 利用车对车电力传输缓解快速充电对配电网的影响：巴黎市案例研究

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2022-12-01 DOI: 10.1049/els2.12051

Yacine Sehimi, Khaled Almaksour, Emilia Suomalainen, Benoit Robyns

{"title":"Mitigating the impact of fast charging on distribution grids using vehicle-to-vehicle power transfer: A Paris city case study","authors":"Yacine Sehimi, Khaled Almaksour, Emilia Suomalainen, Benoit Robyns","doi":"10.1049/els2.12051","DOIUrl":"10.1049/els2.12051","url":null,"abstract":"The deployment of DC fast charging stations (DCFCSs) in cities requires costly reinforcement of low-voltage (LV) distribution grids, due to the high power required. It results in high investments for the station operator as well as for the distribution system operator and limits the profitability of such projects. In this study, a novel concept of fast charging station which reduces the connection to the grid is presented. This station uses Vehicle-to-vehicle (V2V) power transfer from a fleet of carsharing electric vehicles to provide a high charging power while mitigating the power demand on the grid. Based on data from a carsharing operator in the city of Paris, a simulation model of a combined carsharing/V2V fast charging system is proposed, allowing to simulate carsharing trips and V2V transfers. The reduction of the grid connections required to provide fast charging is evaluated and the impact of the repeated discharges on the level of service of the carsharing system is discussed. Moreover, simulation of LV distribution grids allows to compare the grid losses of the V2V system with conventional DCFCSs.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":"13 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41712605","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