IET Electrical Systems in Transportation最新文献_第7页

Study on electric spark discharge between pantograph and catenary in electrified railway 电气化铁路受电弓与接触网之间电火花放电的研究

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2022-03-20 DOI: 10.1049/els2.12043

Hongyi Zhou, Fuchuan Duan, Zhigang Liu, Long Chen, Yang Song, Yexin Zhang

{"title":"Study on electric spark discharge between pantograph and catenary in electrified railway","authors":"Hongyi Zhou, Fuchuan Duan, Zhigang Liu, Long Chen, Yang Song, Yexin Zhang","doi":"10.1049/els2.12043","DOIUrl":"10.1049/els2.12043","url":null,"abstract":"The electric spark caused by pantograph-catenary (PC) electrical contact failure happens frequently, it is a kind of arcing phenomenon which can severely affect the current collection of PC. The theoretical analysis and modelling of PC electric spark are tried. First, the contact spots between PC and their temperature rise are analysed and derived based on the classical electrical contact theory, respectively. The mechanism of spark discharge is revealed through the analysis of PC voltage difference, and the spark discharge model is proposed combining with the spot temperature rise formula and spark discharge mechanism. Then, in order to obtain some key parameters in an electric spark discharge model, such as contact force and contact current, the structure model of PC and the circuit model of vehicle-grid are established for the calculation of the spark rate in PC. Finally, the spark rate is calculated and analysed under the different parameters in PC system. The calculation results are verified by the experiment results. Through the presentation of the correlation of electric spark discharge and factors, such as contact force, contact current and material of PC, this study can support the assessment of electrical contact quality in the PC system in future study.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2022-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12043","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48217497","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

Optimal allocation of intelligent parking lots in distribution system: A robust two-stage optimization model 配电系统中智能停车场的优化配置：一个稳健的两阶段优化模型

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2022-01-22 DOI: 10.1049/els2.12042

Motahareh Mojarad, Mostafa Sedighizadeh, Mohamad Dosaranian-Moghadam

{"title":"Optimal allocation of intelligent parking lots in distribution system: A robust two-stage optimization model","authors":"Motahareh Mojarad, Mostafa Sedighizadeh, Mohamad Dosaranian-Moghadam","doi":"10.1049/els2.12042","DOIUrl":"10.1049/els2.12042","url":null,"abstract":"Electrification of transportation is one of the new ways to deal with environmental issues. In order to reach sustainable development, efficient integration of the plug-in electric vehicles (PEVs) into the distribution network (DN) plays a significant role. Establishing PEV intelligent parking lots (IPLs) is one of the important solutions to develop charging stations. However, one of the problems with IPLs is restrictions created by municipalities and DNs while the common parking lots are not faced with these constraints. The aim of this paper is to optimally allocate IPLs in order to minimize system costs through a two-stage mathematical model. The system cost involves installation cost, cost of exchanging the electrical power with an upstream grid, cost of the electrical power loss, network reliability cost, and emissions cost. In the first stage, the behaviour of IPLs is optimized taking into account the market interactions for enhancing the profit of the IPL owner. In the second stage, the optimal IPL allocation is performed taking various network constraints into consideration. The robust optimization is developed to hedge the DN operator and the IPL owner against risk imposed uncertain variables. The proposed model is a Robust Mix Integer Linear Problem, which is solved using the CPLEX solver in GAMS software. The effectiveness and the efficiency of the proposed model are evaluated on the IEEE 12-bus test network.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2022-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47371523","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

Design and application of a single-tuned passive harmonic filter to suppress harmonic distortion and resonance for railway traction power systems—A case study 抑制铁路牵引电力系统谐波失真和谐振的单调谐无源谐波滤波器的设计与应用——一个案例研究

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-12-10 DOI: 10.1049/els2.12041

Wei-Hsiang Ko, Martti Tuomainen

{"title":"Design and application of a single-tuned passive harmonic filter to suppress harmonic distortion and resonance for railway traction power systems—A case study","authors":"Wei-Hsiang Ko, Martti Tuomainen","doi":"10.1049/els2.12041","DOIUrl":"10.1049/els2.12041","url":null,"abstract":"The railway traction loads produce massive harmonics that are injected directly into the traction power system. This causes serious waveform distortion in the supply voltage and even invokes a harmonic parallel resonance, which may lead to significant harmonic current and voltage amplification. Consequently, severe electrical equipment failures and feeder tripping problems occurred frequently in the traction substation. A clear harmonic parallel resonance at a 27.5-kV feeder can be observed from the field measurement result of the traction substation without filter banks. This paper proposes a high-performance single-tuned 3rd passive filter for harmonic mitigation and harmonic resonance suppression in the traction power system. In the ST filter design process, the impact of the quality factor (Qf) design of the filter reactor on the filtering performance is considered. Furthermore, the driving point impedance as seen from the traction load is also studied. The design and the engineering consideration of the harmonic filter are also presented, which comply with the recommendations of the IEEE and IEC standards. Besides, the unbalance-current protection of a capacitor bank is introduced in this paper. Finally, the proposed filter is implemented in an actual traction substation, from the field measurement results; the proposed harmonic filter delivers very good performance.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45386926","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

A comprehensive theoretical approach for analysing manoeuvring effects on ships by integrating hydrodynamics and power system 综合流体力学和动力系统分析船舶操纵影响的综合理论方法

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-11-19 DOI: 10.1049/els2.12040

Saman Nasiri, Saeed Peyghami, Mostafa Parniani, Frede Blaabjerg

{"title":"A comprehensive theoretical approach for analysing manoeuvring effects on ships by integrating hydrodynamics and power system","authors":"Saman Nasiri, Saeed Peyghami, Mostafa Parniani, Frede Blaabjerg","doi":"10.1049/els2.12040","DOIUrl":"10.1049/els2.12040","url":null,"abstract":"Ship motions affect the propulsion system, which causes fluctuations in the power system. Mutually, the power system variations impact the ship velocity by generating speed changes in the propeller. Therefore, interconnecting the ship hydrodynamic and power system has paramount importance in designing and analysing an all-electric ship (AES). The lack of an integrated model that can be evaluated in various operating conditions, such as manoeuvring, is evident. This paper explores the required perceptions for the power system and hydrodynamic analysis of an AES. Then, an integrated theoretical model comprising both the ship motion and power system is proposed. In addition to providing an accurate model for the ship in varying situations, this study demonstrates that the ship speed estimation during a ship route change differs from when the interconnections are overlooked. In the light of this determination, a straightforward enhancement for the ship speed control system is proposed. The effects of this modification on the ship power system are explored using the proposed model. The developed model is examined in different scenarios, and its advantages are discussed. It is shown that this model is suitable for employing in the model-based design of AESs.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44662232","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

An intelligent energy management strategy for an off-road plug-in hybrid electric tractor based on farm operation recognition 基于农场操作识别的越野插电式混合动力拖拉机智能能量管理策略

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-11-17 DOI: 10.1049/els2.12029

Amin Ghobadpour, Hossein Mousazadeh, Sousso Kelouwani, Nadjet Zioui, Mohsen Kandidayeni, Loïc Boulon

{"title":"An intelligent energy management strategy for an off-road plug-in hybrid electric tractor based on farm operation recognition","authors":"Amin Ghobadpour, Hossein Mousazadeh, Sousso Kelouwani, Nadjet Zioui, Mohsen Kandidayeni, Loïc Boulon","doi":"10.1049/els2.12029","DOIUrl":"10.1049/els2.12029","url":null,"abstract":"Due to the growing emergence of vehicle electrification, agricultural tractor developers are launching hybrid powertrains in which energy management strategy (EMS) assumes a prominent role. This work mainly aims at developing an EMS for a plug-in hybrid electric tractor (PHET) to minimise fuel consumption and increase the operating range. The developed off-road PHET power sources are composed of a biogas-fuelled Internal Combustion Engine Generator (Bio-Gen), a photovoltaic system, and a battery pack. To control the power flow among different sources, a two-layer EMS is formulated. In this regard, initially, the farm operating mode is recognised by means of classification of a working cycle's features. Then, a control strategy based on a multi-mode fuzzy logic controller (MFLC) is employed to manage the power flow. At each sequence, the classifier identifies the farm operation condition and accordingly activates the relative mode of the MFLC to meet the requested power from the Bio-Gen. The performance of the proposed EMS has been evaluated based on three real-world typical agricultural working cycles. The results demonstrate the successful performance of the proposed intelligent EMS under farm conditions by maintaining the energy sources' operation in a high-efficiency zone which can lead to the extension of the working range and decrease fuel consumption.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2021-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12029","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48584856","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

An isolated-boost-converter-based unidirectional three-phase off-board fast charger for electric vehicles 一种基于隔离升压变换器的电动汽车单向三相车载快速充电器

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-10-28 DOI: 10.1049/els2.12039

Ahmed Elserougi, Ibrahim Abdelsalam, Ahmed Massoud

{"title":"An isolated-boost-converter-based unidirectional three-phase off-board fast charger for electric vehicles","authors":"Ahmed Elserougi, Ibrahim Abdelsalam, Ahmed Massoud","doi":"10.1049/els2.12039","DOIUrl":"10.1049/els2.12039","url":null,"abstract":"In this work, a novel three-phase unidirectional off-board Electric Vehicles (EVs) fast charger is proposed. Each phase of the proposed converter consists of a two-stage converter. The first stage is an AC–DC front-end converter with power factor correction (PFC) control. The front-end AC–DC converter is based on an isolated boost converter, which has a boosting capability and provides galvanic isolation. In this stage, parallel-in parallel-out isolated boost converter modules are employed in each phase. This enables sharing the current among modules to avoid implementing one module with a high current rating to meet the fast-charging requirements. The multimodule option provides fault-ride through capability for the proposed charger. The DC outputs of involved phases, that is, three isolated DC voltages, are fed to three cascaded DC–DC unidirectional buck converters. The charging terminals are used to charge the EV battery through a filter inductor with a charging current controller's aid. A detailed illustration of the suggested closed-loop controllers is presented to ensure a successful operation for the proposed architecture. A simulation case study for a 25-kW charger is presented. Finally, a 1-kW prototype is implemented for experimental validation.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2021-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46998022","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: 7

Optimal load management strategy for large electric vehicle charging stations with undersized charger clusters 小型充电集群下大型电动汽车充电站最优负荷管理策略

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-10-09 DOI: 10.1049/els2.12037

Erdem Gümrükcü, Ferdinanda Ponci, Antonello Monti, Giuseppe Guidi, Salvatore D’Arco, Jon Are Suul

{"title":"Optimal load management strategy for large electric vehicle charging stations with undersized charger clusters","authors":"Erdem Gümrükcü, Ferdinanda Ponci, Antonello Monti, Giuseppe Guidi, Salvatore D’Arco, Jon Are Suul","doi":"10.1049/els2.12037","DOIUrl":"10.1049/els2.12037","url":null,"abstract":"This study proposes a load management strategy for parking and charging facilities with the capacity to serve several hundreds of electric vehicles. The strategy is built upon two assumptions on power distribution systems of large charging stations: i) they are configured as clusters, each comprising a number of charging units for reduced cabling complexity, ii) the power delivery components (such as feeders and circuit breakers) of individual clusters are sized for load factors smaller than 100% to reduce the capital costs. Unless controlled, the load demand can concentrate into particular cluster(s) whereas other clusters can still tolerate additional demand. This may lead to avoidable load interruptions and, thus, reduced energy provision. To address this issue, a load management strategy that optimises the distribution of vehicles across the clusters and their charging profiles is proposed. The strategy is compared in simulation with a benchmark strategy in different commercial parking lot scenarios. The results demonstrate that the optimal management achieves identical demand fulfilment rates despite more pronounced load factor limitations as compared to the benchmark strategy. This can enable further reduction in system component sizing. In the tested scenarios, the proposed strategy leads to increased long term profits ranging between 12% and 43%.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2021-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42229138","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: 6

An improved quantitative assessment method on hazardous interference of power lines to the signal cable in high-speed railway 一种改进的高速铁路电力线对信号电缆危险干扰定量评估方法

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-10-08 DOI: 10.1049/els2.12038

Chang Liu, Shiwu Yang, Yong Cui, Shaotong Chu, Qihui Xiong

{"title":"An improved quantitative assessment method on hazardous interference of power lines to the signal cable in high-speed railway","authors":"Chang Liu, Shiwu Yang, Yong Cui, Shaotong Chu, Qihui Xiong","doi":"10.1049/els2.12038","DOIUrl":"10.1049/els2.12038","url":null,"abstract":"High-speed railway (HSR) presents the characteristics of a heavy load, large traction current, and ballastless track-bed. As the 'neural network' of the signalling system, the line-side signal cable may threaten both human safety and control information transmission for an HSR operation when interfered with by a strong traction current. This study comprehensively investigates the electromagnetic interference (EMI) factors of the traction power supply system (TPSS) and the integrated earthing system (IES) to a signal cable and completes the electromagnetic coupling mechanism analysis of longitudinal electromotive force (LEF). Then, an improved theoretical calculation method is proposed for the multi-conductor power line network of the HSR instead of the traditional look-up table method. Regarding the essential influence of different earthing methods and cable laying conditions, the quantitative calculation of the LEF on the cable is evaluated. The validity of the theoretical method is verified through finite element simulation. Finally, the solutions to suppress the EMI are put forward for cable laying. This work provides an accurate quantitative basis for the implementation of the on-site LEF test, is significant for the design of cable laying schemes in railway engineering, and is also beneficial to ensure the safe operation of HSR.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48580925","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 analysis of asymmetrical less-rare-earth permanent magnet motor for electric vehicle 电动汽车用非对称少稀土永磁电机性能分析

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-09-18 DOI: 10.1049/els2.12036

Bingchang Lv, Liwei Shi, Lintao Li, Kaiwen Liu, Jianning Jing

引用次数: 5

Integrated Taguchi method-assisted polynomial Metamodelling & Genetic Algorithm based optimisation of a surface inset permanent synchronous motor for performance improvement 集成田口方法辅助的多项式元模型和基于遗传算法的表面嵌入永磁同步电机性能优化

IF 2.3 4区工程技术

IET Electrical Systems in Transportation Pub Date : 2021-09-08 DOI: 10.1049/els2.12035

Monika Verma, Madhusudan Singh, Mini Sreejeth

{"title":"Integrated Taguchi method-assisted polynomial Metamodelling & Genetic Algorithm based optimisation of a surface inset permanent synchronous motor for performance improvement","authors":"Monika Verma, Madhusudan Singh, Mini Sreejeth","doi":"10.1049/els2.12035","DOIUrl":"10.1049/els2.12035","url":null,"abstract":"In this study, an Integrated Taguchi method-assisted polynomial Metamodelling & Genetic Algorithm (ITM&GA)-based optimisation technique is implemented for design optimisation of a surface inset permanent magnet synchronous motor (SIPMSM). The motor geometry is analysed by implementing the finite element method for application of the motor in electric compressors of the cooling system of an electric vehicle (EV). The polynomial surrogate model is computed with the help of Taguchi experiments to eliminate the redesigning process of models to reach the optimum values of design parameters and reduce the ambiguity to select the best optimum solution in Traditional Taguchi Method. The root-mean-square error test is performed to validate the accuracy of metamodels. The optimum solutions are then converged using the GA technique. The optimum results are compared and presented. Using the ITM&GA technique, the reduction in unwanted ripples in torque and cogging torque along with the improved torque performance of the motor is achieved successfully. The proposed mechanism is effective in obtaining quick and accurate solutions for preliminary designs of the SIPMSM for the electric compressor application in EVs.","PeriodicalId":48518,"journal":{"name":"IET Electrical Systems in Transportation","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2021-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/els2.12035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42760460","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