Archives of Electrical Engineering最新文献_第7页

Constrained optimization of the brushless DC motor using the salp swarm algorithm 基于salp群算法的无刷直流电动机约束优化

Archives of Electrical Engineering Pub Date : 2023-11-06 DOI: 10.24425/aee.2022.141684

引用次数: 0

Influence of the converter transformer valve-side bushing fault on commutation reactance protection and improvement scheme 换流变压器阀侧套管故障对换向电抗保护的影响及改进方案

Archives of Electrical Engineering Pub Date : 2023-11-03 DOI: 10.24425/aee.2023.146046

{"title":"Influence of the converter transformer valve-side bushing fault on commutation reactance protection and improvement scheme","authors":"","doi":"10.24425/aee.2023.146046","DOIUrl":"https://doi.org/10.24425/aee.2023.146046","url":null,"abstract":": Commutation reactance is an important component in the voltage-source converter-based high-voltage direct current (VSC–HVDC) transmission system. Due to its connection to the converter, when there is a fault occurring on the valve-side bushing of a converter transformer, the nonlinearity operation of the converter complicates the characteristics of current ﬂowing through commutation reactance, which may lead to mal-operation of its overcurrent protection. It is of great signiﬁcance to study the performance of commutation reactance overcurrent protection under this fault condition and propose corresponding improvement measures to ensure the safe and stable operation of AC and DC systems. In the VSC–HVDC system with the pseudo-bipolar structure of a three-phase two-level voltage source converter, the valve has six working periods in a power frequency cycle, and each period is divided into ﬁve working states. According to the diﬀerence be-tween the fault phase and non-fault phase of the conductive bridge arms at the time of fault occurrence, these ﬁve working states are merged into two categories. On this basis, various faults of the valve-side bushing of a converter transformer are analyzed, and the conclusion is drawn that the asymmetric fault of valve-side bushing can","PeriodicalId":45464,"journal":{"name":"Archives of Electrical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135774877","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}

引用次数: 0

Train based on virtual synchronous generator technology uninterrupted phase-separation passing study 列车基于虚拟同步发电机技术的不间断分相通过研究

Archives of Electrical Engineering Pub Date : 2023-11-03 DOI: 10.24425/aee.2023.146048

{"title":"Train based on virtual synchronous generator technology uninterrupted phase-separation passing study","authors":"","doi":"10.24425/aee.2023.146048","DOIUrl":"https://doi.org/10.24425/aee.2023.146048","url":null,"abstract":": The problem of large speed loss exists in the traditional passing through the electric phase-separation method of trains, which is more prominent when trains pass through an electric phase-separation zone in the uphill section of long ramps and may lead to the trains not passing through the phase-separation zone safely. In order to solve this problem, based on the energy storage type railroad power conditioner, a train uninterrupted phase-separationpassingsystembasedontheenergystoragetyperailroadpowerconditioner is proposed. The energy storage railroad power conditioner can realize the recovery and utilization of regenerative braking energy of the electriﬁed railroad. In the structure of the energy storage railroad power conditioner, the single-phase inverter is led from the middle DC side of the energy storage railroad power conditioner and connected to the neutral line throughtheLCLﬁlterandthestep-uptransformer,whichconstitutesanuninterruptedphase-separation passing system. The single-phase inverter is controlled using virtual synchronous generator technology, which allows the single-phase inverter to have external characteristics similar to those of a synchronous generator, providing support for the voltage and frequency in the neutral zone. The power required by the train to pass the electric phase-separation is provided by the power supply arm or the energy storage system, which not only improves the utilization rate of regenerative braking energy but also realizes the uninterrupted phase-separation passing of the train through the control of the voltage in the neutral region","PeriodicalId":45464,"journal":{"name":"Archives of Electrical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135774886","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}

引用次数: 0

Selected methods for improving operating conditionsof three-phase systems working in the presenceof current and voltage deformation – part II 改善存在电流和电压变形的三相系统运行条件的选择方法。第2部分

Archives of Electrical Engineering Pub Date : 2023-11-03 DOI: 10.24425/123666

Marian Pasko, Dawid Buła, Krzysztof Dębowski, Dariusz Grabowski, Marcin Maciążek

引用次数: 0

Large-signal input characteristics of selected DC–DC switching converters, Part II. Discontinuous conduction mode 所选DC-DC开关变换器的大信号输入特性，第二部分。断续导通方式

Archives of Electrical Engineering Pub Date : 2023-11-03 DOI: 10.24425/aee.2020.134631

引用次数: 1

Analysis and effect of static eccentricity fault on performance indicators of a synchronous reluctance motor 静态偏心故障对同步磁阻电动机性能指标的影响及分析

Archives of Electrical Engineering Pub Date : 2023-11-03 DOI: 10.24425/aee.2023.146052

引用次数: 0

Invariant properties of positive linear electrical circuits 正线性电路的不变性

Archives of Electrical Engineering Pub Date : 2023-11-03 DOI: 10.24425/aee.2019.130689

Tadeusz Kaczorek

引用次数: 0

Controlling magnetic inductance by air-gap configuration in power electronics applications 电力电子应用中的气隙结构控制磁感应

Archives of Electrical Engineering Pub Date : 2023-11-03 DOI: 10.24425/aee.2023.146044

{"title":"Controlling magnetic inductance by air-gap configuration in power electronics applications","authors":"","doi":"10.24425/aee.2023.146044","DOIUrl":"https://doi.org/10.24425/aee.2023.146044","url":null,"abstract":": Gapped magnetic components are inherent to applications where conversion of power would force magnetic ﬂux density beyond the saturation point of magnetic materials. A physical discontinuity in a magnetic path, which an air gap represents, signiﬁes a drastic change in its reluctance to magnetic ﬂux. This gives rise to a phenomenon referred to as the fringing eﬀect, which impacts the performance of magnetic components. The fringing ﬂux also aﬀects the physical properties of magnetic components, such as magnetic reluctance and inductance. Since inductance of gapped magnetic components is a function of the size of the air gap, a relatively simple change to the conﬁguration of the air gap or splitting a single gap into a plurality of gaps entails, frequently, a radical change to the magnetic circuit of the component. This paper examines the way the air-gap conﬁguration aﬀects the distribution of the fringing ﬂux and, by extension, magnetic reluctance and inductance. A method to aid the design of multigap inductors is presented based on 3-D electromagnetic modelling as well as measurements. An analytic expression, which closely approximates the required length of quasi-distributed gaps substituting a single gap, is developed.","PeriodicalId":45464,"journal":{"name":"Archives of Electrical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135774881","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}

引用次数: 0

Measurement of combined gap in whole process of transmission lines' live working based on 3D laser point cloud 基于三维激光点云的输电线路带电工作全过程组合间隙测量

Archives of Electrical Engineering Pub Date : 2023-11-03 DOI: 10.24425/aee.2023.146047

{"title":"Measurement of combined gap in whole process of transmission lines' live working based on 3D laser point cloud","authors":"","doi":"10.24425/aee.2023.146047","DOIUrl":"https://doi.org/10.24425/aee.2023.146047","url":null,"abstract":": Transmission lines’ live working is one of an eﬀective means to ensure the reliable operation of transmission lines. In order to solve the unsafe problems existing in the implementation of traditional live working, the paper uses ground-based lidar to collect point cloud data. A tile based on the pyramid data structure is proposed to complete the storage and calling of point cloud data. The improved bidirectional ﬁltering algorithm is used to distinguish surface features quickly and obtain a 3D model of the site. Considering the characteristics of live working, the speed of data reading and querying, the nearest point search algorithm based on octree is used to acquire a real-time calculation of the safe distance of each point in the planned path, and the safety of the operation mode is obtained by comparing with the value speciﬁed in the regulation, and assist in making decisions of the operation plan. In the paper, the simulation of the actual working condition is carried out by taking the “the electric lifting device ascending” as an example. The experimental results show that the established three-dimensional model can meet the whole process control of the operation, and has achieved practical eﬀect.","PeriodicalId":45464,"journal":{"name":"Archives of Electrical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135774883","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}

引用次数: 0

Identifying the optimal controller strategy for DC motors 确定直流电机的最优控制策略

Archives of Electrical Engineering Pub Date : 2023-11-03 DOI: 10.24425/aee.2019.125983

M.R. Qader

引用次数: 2