Technical Electrodynamics最新文献_第3页

COMBINED CONTROL OF GEARLESS ARC-CORE SHIP RADAR ANTENNA ELECTRIC DRIVE WITH FUZZY LOGIC REGULATOR 基于模糊逻辑调节器的无齿轮船用雷达天线电驱动组合控制

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.060

V. Stiazhkin, O. Zaichenko, S. Gavryluk, O.M. Ryzhkov, V. Teriaiev, N. Krasnoshapka

引用次数: 1

STUDY OF APPROACHES TO THE DEVELOPMENT OF A SCANNING DEVICE BASED ON A BRUSHLESS MAGNETOELECTRIC MOTOR OF RETURN-ROTARY MOTION 基于无刷回转磁电马达的扫描装置研制方法研究

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.032

K. Akinin, V. Kireyev, A. Filomenko, V. Lavrinenko, O. Vertelieva

引用次数: 0

APPLYING OF ASYNCHRONOUS ELECTRIC DRIVE WITH REACTIVE POWER CONTROL 异步电力传动无功控制的应用

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.042

R. A. Chepkunov

引用次数: 0

POTENTIAL MEANS FOR MITIGATION OF MAGNETIC FIELD GENERATED BY UNDERGROUND POWER CABLES IN POLYETHYLENE PIPES MADE OF COMPOSITE MAGNETIC MATERIAL 降低复合磁性材料聚乙烯管道中地下电力电缆产生磁场的潜在方法

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.003

I. Kucheriava

{"title":"POTENTIAL MEANS FOR MITIGATION OF MAGNETIC FIELD GENERATED BY UNDERGROUND POWER CABLES IN POLYETHYLENE PIPES MADE OF COMPOSITE MAGNETIC MATERIAL","authors":"I. Kucheriava","doi":"10.15407/techned2023.03.003","DOIUrl":"https://doi.org/10.15407/techned2023.03.003","url":null,"abstract":"The magnetic field of the medium- and high-voltage underground power cable line, laid in composite polyethylene pipes having magnetic properties, with the use of special loose-fill/fill-up soil of different dimensions (bulk) is studied by computer modeling. The pipes and additional soils around and near the cables are made of a composite material with effective magnetic properties and can act as a magnetic shield that reduces the level of the field on the ground. The effi-ciency of field shielding depending on the height and width of the composite loose-fill/fill-up soil is analyzed. The exis-tence of the optimal not large (in height) fill-up soil for the best mitigation of the magnetic field on the ground directly above the cables and the influence of the width of the loose-fill/fill-up soils on the shielding efficiency are revealed. The characteristic features of the magnetic field distribution and the field level depending on the availability or non-availability of composite loose-fill soil are presented. The advantages of (trefoil) cable arrangement in one pipe with additional composite loose-fill and fill-up soil are shown. References 30, figures 5.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49207887","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

CONDITIONS FOR RECHARGING THE CAPACITORS OF THE COMMUTATING DEVICE OF A THREE-PHASE BRIDGE COMPENSATION CONVERTER 三相桥式补偿变换器整流装置电容器的再充电条件

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.013

V. Boiko, O. Shkardun

{"title":"CONDITIONS FOR RECHARGING THE CAPACITORS OF THE COMMUTATING DEVICE OF A THREE-PHASE BRIDGE COMPENSATION CONVERTER","authors":"V. Boiko, O. Shkardun","doi":"10.15407/techned2023.03.013","DOIUrl":"https://doi.org/10.15407/techned2023.03.013","url":null,"abstract":"The development of the authors is aimed at creating a modern power electronics device with high energy characteristics. In the scheme of a three-phase bridge compensation converter, the role of the commutator is a performed by a three-phase group of fully controlled devices. This technical solution allows for controlled recharging of the commutating link capacitors. In this case, the ultimate goal is to create such conditions for the formation of a commutating voltage, which, in shape and magnitude, is capable of providing a compensation mode of operation of power electric diodes. The conditions for recharging the capacitors of the commutating link were studied in three modes: the adjustment is carried out within the limits of the operation of the diodes of its phase, the next and the previous one. The conditions under which a three-phase bridge converter is able to operate effectively in a compensation mode are proved. To do this, when recharging the capacitor bank, a group of fully controlled devices of the commutated link must be regulated within the operation of the power electric diode of its own or subsequent phase. Comparison of the characteristics of the commutating voltage for different modes of its formation is carried out by the method of harmonic analysis. References 8, figures 5, tables 2.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48247242","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

IMPROVEMENT OF METHODICAL AND INSTRUMENTAL SUPPORT FOR DEMAND SIDE MANAGEMENT IN THE LIBERALIZED ELECTRICITY MARKETS 在自由化的电力市场中改进对需求侧管理的系统性和工具性支持

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.068

O. Kotsar, I.O. Rasko

{"title":"IMPROVEMENT OF METHODICAL AND INSTRUMENTAL SUPPORT FOR DEMAND SIDE MANAGEMENT IN THE LIBERALIZED ELECTRICITY MARKETS","authors":"O. Kotsar, I.O. Rasko","doi":"10.15407/techned2023.03.068","DOIUrl":"https://doi.org/10.15407/techned2023.03.068","url":null,"abstract":"Global decarbonisation and widespread use of alternative and renewable energy sources aims to shortage the fossil fuel using and reduce the harmful impact on the environment within the framework of the sustainable development paradigm. At the same time, wide integration into the power network of unmanaged generating units based on renewable energy sources in the absence of a sufficient number of electric energy storage units of the required capacity in conditions of unpredictability and instability of production may lead to the inability to provide reliable coverage of the consumers power load, which requires the use of alternative ways of balancing the power system. Under such conditions, the coordination of electric power (electricity) demand and supply for should be carried out exclusively by demand-side management in real time or near real time. That is why the improvement of methodological and instrumental provision of demand-side management tasks today is one of the most important components of the effectiveness of the \"green\" transition. To achieve the goal, the article analyzed the existing DSM-methods, performed an analysis of the requirements of national regulatory documents for DSM and service provision in the liberalized electricity market of Ukraine, described an improved ideal norm method and a modernized toolkit for demand-side management, as well as a reliable budgetary technical solution for the formation of information support for DSM in the retail electricity market is proposed, which together with dynamic pricing and the introduction of real-time tariffs will contribute to ensuring economic regimes of operation of the IPS and high-quality power supply to consumers. References 14, figures 4, tables 2.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48355614","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

A CAPACITIVE SENSOR WITH PARALLEL COMPLANARE ELECTRODES SYSTEM FOR MEASUREMENT OF AIR GAP IN HYDROGENERATORS 一种用于水轮发电机气隙测量的并联平面电极电容式传感器系统

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.080

А.S. Levitskyi, V. L. Rassovskyi, I. Zaitsev

{"title":"A CAPACITIVE SENSOR WITH PARALLEL COMPLANARE ELECTRODES SYSTEM FOR MEASUREMENT OF AIR GAP IN HYDROGENERATORS","authors":"А.S. Levitskyi, V. L. Rassovskyi, I. Zaitsev","doi":"10.15407/techned2023.03.080","DOIUrl":"https://doi.org/10.15407/techned2023.03.080","url":null,"abstract":"A capacitive sensor for measuring the air gap between the boring of the stator core and the poles of the rotor in a powerful hydrogenerator is proposed and investigated. The sensor consists of a system of equal in width tape parallel coplanar high-potential and low-potential electrodes, between which grounded electrodes are placed. The ratios between the width of the high-potential, low-potential and grounded electrodes are selected depending on the size of the nominal gap. The electrodes are formed on a dielectric substrate mounted on the boring of the stator core. To reduce the effect of edge effects on the short sides of high-potential electrodes, the length of the low-potential electrodes is chosen to be smaller than the length of the high-potential electrodes by a value determined by the nominal gap. It is proposed to place all electrodes along the length perpendicular to the boring core generatrix to reduce the measurement error due to the influence of the rotor pole curvature. The electrical capacitance between the system of high-potential electrodes connected in parallel and the system of low-potential electrodes connected in parallel, which functionally depends on the size of the air gap, is measured. Analytical and graphical dependences for the sensor conversion function intended for use on a SGK538 / 160-70M bulb hydrogenerator have been determined. The value of the error caused by the curvature of the rotor poles in this hydrogen generator was calculated. The sensor in comparison with analogs has higher accuracy of measurement. The sensor or sensor system can be used as a stand-alone device or as part of monitoring and diagnostic systems. References 19, figures 6.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43995414","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

SIMULATION AND EXPERIMENTAL INVESTIGATION OF DUAL THREE-PHASE BLDC MOTOR OPERATION AT IMBALANCED MODULAR LOADING 模块负载不平衡时双三相BLDC电动机运行的仿真与实验研究

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.022

І.Z. Shchur, В.M. Kharchyshyn, V. Turkovskyi

{"title":"SIMULATION AND EXPERIMENTAL INVESTIGATION OF DUAL THREE-PHASE BLDC MOTOR OPERATION AT IMBALANCED MODULAR LOADING","authors":"І.Z. Shchur, В.M. Kharchyshyn, V. Turkovskyi","doi":"10.15407/techned2023.03.022","DOIUrl":"https://doi.org/10.15407/techned2023.03.022","url":null,"abstract":"Electric machines built according to the modular principle – with several three-phase windings on a stator – are a new direction of modern electromechanics, because they have a number of advantages compared to traditional single-winding machines. Among these benefits, the most important are increased efficiency and fault tolerance, which is especially important for self-powered electric vehicles. However, the presence of a mutual magnetic coupling between the modules, as well as their unequal electrical load, amplify the electromagnetic torque ripple inherent in one or another electric drive system. In this work, the electromagnetic torque ripples in a dual three-phase (DTP) brushless DC motor (BLDCM) under different loads of its modules were investigated for the cases of absence and presence of mutual magnetic coupling between armature winding sets and in the cases of the drive operation in open and closed control systems. The research was carried out by means of simulation in the Matlab/Simulink environment on a circular model of real mock-up sample of DTP permanent magnet machine developed based on the results of its magnetic field simulation using the finite element method. Adequacy of simulation results is confirmed by experimental investigation. The results of the DTP BLDCM simulation studies showed an increase in the relative electromagnetic torque ripples of individual modules due to both the presence of magnetic coupling between winding sets and the deviation from their equal loading. However, at the level of the whole DTP BLDCM, a significant mutual compensation the electromagnetic torque ripples of the modules is shown, especially if they are magnetically coupled. The presence of closed-loop control systems of individual modules significantly reduces the electromagnetic torque ripples caused by different loading of the modules, especially in the case of magnetically uncoupled modules. References 26, figures 7, tables 3.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42700463","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

ELECTRODYNAMICS OF HIGH-PRECISION ITERATIVE FEED ELECTRIC DRIVE OF MACHINING CENTER WITH INERTIAL LOAD 惯性负载下加工中心高精度迭代进给电驱动的电动力学

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.050

O.A. Khudiayev, D. Pshenychnykov, V. Klepikov, B. Vorobiov

{"title":"ELECTRODYNAMICS OF HIGH-PRECISION ITERATIVE FEED ELECTRIC DRIVE OF MACHINING CENTER WITH INERTIAL LOAD","authors":"O.A. Khudiayev, D. Pshenychnykov, V. Klepikov, B. Vorobiov","doi":"10.15407/techned2023.03.050","DOIUrl":"https://doi.org/10.15407/techned2023.03.050","url":null,"abstract":"The kinematical diagram and refined mathematical model of steady motion in machining mode of high-precision itera-tive multichannel differential-geared electric feed drive of machining center with substantially inertial working tool are presented. The structural-algorithmic diagram of a three-channel control system of an electric drive, represented by various options for implementing an iterative algorithm for the interaction of control channels is given. Concretization of computer model is completed to simulation of movements of iterative two- and three-channel electric drive with sub-ordinated adjustment of control channels, destined for displacement of working tool feed mechanism in face milling mode. Comparative assessment in time and frequency areas of quality indicators to improve the feed accuracy using the proposed multichannel electromechanical system is completed. Comparison is made with similar on purpose, but dif-ferent on speed of operation, modern single-channel gearless feed electric drives, which traditionally used on heavy metal cutting machines and machining centers. It is shown that in compensated two- and three-channel electric drive compared to even broadband single-channel asynchronous feed electric drive with frequency-current vector control a significant increase not only in speed of operation, but also in the dynamic accuracy of feed control practically in the entire range of working tool movements can be achieved. It is determined that iterative three-channel electric drive potentially provides a level of quality control of the working tool, unattainable not only in the corresponding traditional single-channel electric feed drives of various types, but in a similar construction two-channel differential-reducer feed electric drive. References 10, figures 5, table 1.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45306776","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

CALCULATION OF CORRECTIONS OF DIFFERENTIAL TWO-ELECTRODE CONDUCTIVITY CELLS WITH CALCULATED CONSTANT 用计算常数计算差分双电极电导池的校正

Technical Electrodynamics Pub Date : 2023-04-24 DOI: 10.15407/techned2023.03.086

O. Mikhal, D. V. Meleshchuk, O. Stennik

{"title":"CALCULATION OF CORRECTIONS OF DIFFERENTIAL TWO-ELECTRODE CONDUCTIVITY CELLS WITH CALCULATED CONSTANT","authors":"O. Mikhal, D. V. Meleshchuk, O. Stennik","doi":"10.15407/techned2023.03.086","DOIUrl":"https://doi.org/10.15407/techned2023.03.086","url":null,"abstract":"The object of study is a differential two-electrode conductivity cell with a calculated constant, designed for the practical realization of the unit of length – a meter in national measurement standards of electrolytic conductivity of liquids. The differential cell consists of two tubes of the same diameter but different lengths. The article presents an idealized model for calculating cell constants and determining electrolytic conductivity. The presence of holes for filling the cell, caus-ing a distortion of the uniformity of the current density distribution in the middle of the cell, and a significant dielectric permeability of aqueous solutions lead to significant errors when measuring the resistance of liquid columns. The arti-cle presents mathematical expressions for calculating two types of corrections. First, the correction caused by the dis-tortion of the field uniformity due to the presence of the inlet and outlet holes of the cell. Secondly, the correction caused by the presence of bias currents in aqueous solutions of electrolytes. The appearance of a differential cell based on two tubes with a diameter of 9 mm and a length of 50 and 100 mm, respectively, which is being tested as a part of the national measurement standard of Ukraine, is given. References 7, figures 5, tables 2.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48222705","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