环形螺线管-大导体系统中励磁电流和感应电流的相互影响

IF 1.6 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Electrical Engineering & Electromechanics Pub Date : 2023-10-21 DOI:10.20998/2074-272x.2023.6.12
Yu. V. Batygin, O. F. Yeryomina, S. O. Shinderuk, E. O. Chaplygin
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引用次数: 0

摘要

问题。在电气系统的导电元件中,电流的流动伴随着电磁场的激发和感应电流的产生。感应信号的激励反过来又导致实际激励电流参数的变化。本工作的目的是获得用于定量分析励磁和感应电流相互影响结果的解析表达式,并根据电感系统的几何特性计算它们的比值。方法。本文以一个广泛的电感系统为例,对相互影响的过程进行了分析,该系统将一个扁平的圆形螺线管置于一个巨大导体的表面之上。得到了在大体积导体中激发涡流的解析表达式,以及感应电流对螺线管中激发电流影响的数值估计。结果。结果表明,在螺线管与大体积螺线管表面之间的小距离处,感应电流对螺线管内电流的影响非常显著。研究发现,增大螺线管绕组的宽度会导致感应电流对螺线管内激励电流的影响显著增加。结果表明,“圆形螺线管-块状导体”系统的电感随螺线管与块状导体之间距离的减小和螺线管径向尺寸的增大而减小,这就需要增加激励电流的幅值来维持系统中给定的磁通量值。创意。这项工作的科学新颖之处在于提出了一种分析方法,并获得了激励电流和感应电流导体相互影响的数值估计。实用价值。在设计各种用途的电气系统结构的实践中,估计导体与电流的相互影响是很有意义的。在未来的研究方向上,很有前途的是进行实验,测量各种电气系统设计中励磁和感应电流相互影响的定量特征。
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The mutual influence of exciting and induced currents in the circular solenoid – massive conductor system
Problem. The flow of currents in the conductive elements of electrical systems is accompanied by the excitation of electromagnetic fields and the occurrence of induced currents. The excitation of the induced signals, in turn, leads to a change in the parameters of the actual exciting currents. The purpose of the work is to obtain analytical expressions for the quantitative analysis of the results of the mutual influence of the exciting and induced currents and to calculate their ratio depending on the geometric characteristics of the inductor systems. Methodology. The analysis of the processes of mutual influence is carried out on the example of a widespread inductor system, where a flat circular solenoid is placed above the surface of a massive conductor. Analytical expressions for eddy currents excited in a massive conductor and numerical estimates of the effect of induced currents on exciting currents in a solenoid are obtained. Results. It is shown that the influence of the induced current on the current in the solenoid is very significant at small distances between the solenoid and the surface of the massive solenoid. It has been found that an increase in the width of the solenoid winding leads to a significant increase in the influence of the induced current on the excitation current in the solenoid. It is shown that the inductance of the «circular solenoid - massive conductor» system drops with a decrease in the distance between the solenoid and the massive conductor and an increase in the radial dimensions of the solenoid, which requires an increase in the amplitude of the exciting current to maintain a given value of the magnetic flux in the system. Originality. The scientific novelty of this work lies in the proposal of an analytical approach and obtaining numerical estimates of the mutual influence of conductors with exciting and induced currents. Practical value. Estimates of the mutual influence of conductors with currents are of interest for the practice of designing structures of electrical systems for various purposes. Very promising in the direction further research is seen as carrying out experiments with measurements of the quantitative characteristics of the mutual influence of exciting and induced currents in various designs of electrical systems.
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来源期刊
Electrical Engineering & Electromechanics
Electrical Engineering & Electromechanics ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
2.40
自引率
50.00%
发文量
53
审稿时长
10 weeks
期刊最新文献
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