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An Analytical Model of a Disk Magnetoelectric Inverted Motor Based on the 3D Method of Separation of Fourier Variables 基于三维傅立叶变量分离法的盘式磁电逆变电机分析模型
Q3 Engineering Pub Date : 2024-04-04 DOI: 10.3103/s1068371224010024
A. A. Afanasyev, A. I. Malinin

Abstract

Solutions of equations of mathematical physics for the 3D Laplace equation for a hollow cylinder are used to develop an analytical model of an inverted disk magnetoelectric motor with two axial air gaps based on the Fourier variable separation method. Unknown constants of this method are found using four known boundary conditions of the electromagnetic field on the common end surfaces of hollow cylinders: scalar magnetic potentials and three coordinate components of magnetic induction do not undergo a jump (discontinuity). If, for convenience of calculation, the magnetic sheets of the windings are located at these boundaries, the magnetic potentials on them will undergo a jump equal to the total current of the magnetic sheet. The distribution curves of magnetic inductions in the air gaps and the values of the electromagnetic torque of the motor are obtained, which are compared with the results of numerical calculation using the Ansys Maxwell program. The good agreement between the results obtained indicate the reliability of the proposed analytical model of a disk-type inverted motor.

摘要 利用空心圆柱体三维拉普拉斯方程的数学物理方程解,基于傅立叶变量分离法,建立了具有两个轴向气隙的倒置盘式磁电机的分析模型。该方法的未知常数是利用空心圆柱体公共端面电磁场的四个已知边界条件求得的:标量磁势和磁感应强度的三个坐标分量不发生跳跃(不连续)。如果为了计算方便,绕组的磁片位于这些边界上,则其上的磁势将发生与磁片总电流相等的跃变。得出的气隙磁感应强度分布曲线和电机电磁转矩值与使用 Ansys Maxwell 程序进行数值计算的结果进行了比较。计算结果之间的良好一致性表明,所提出的盘式倒置电机分析模型是可靠的。
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引用次数: 0
Features of Electromagnetic Processes and Force Interactions in Turbogenerators with Reactive Power Consumption 具有无功功率消耗的涡轮发电机中电磁过程和力相互作用的特点
Q3 Engineering Pub Date : 2024-04-04 DOI: 10.3103/s1068371224010085
E. P. Kurbatova, P. A. Dergachev, A. A. Kostenko, P. A. Kurbatov, S. N. Lenev, A. V. Okhlopkov

Abstract

A three-dimensional model of a turbogenerator is proposed, which allows analyzing its magnetic state in various operating modes, including with reactive power consumption. For this purpose, the Easy-MAG3D software based on spatial integral equations was used, which made it possible, thanks to the use of parallel computing processes, to calculate the magnetic field in a full three-dimensional formulation. Studies of the main negative phenomena that occur in the mode of reactive power consumption and affect the state of the turbo generator, namely, saturation of the stator and rotor cores and an increase in the axial component of magnetic induction in the end zone of the stator, leading to increased losses and increased heating, as well as changes in electromagnetic forces occurring in the frontal parts of the stator winding. Conclusions are drawn about the most significant factors that worsen the working conditions of turbogenerators when consuming reactive power.

摘要 提出了一种涡轮发电机的三维模型,可以分析其在各种运行模式(包括无功功率消耗)下的磁场状态。为此,使用了基于空间积分方程的 Easy-MAG3D 软件,由于使用了并行计算进程,该软件能够以全三维形式计算磁场。研究了在无功功率消耗模式下发生并影响汽轮发电机状态的主要负面现象,即定子和转子铁芯饱和、定子端部区域磁感应强度轴向分量增加导致损耗增加和发热增加,以及定子绕组正面部分发生的电磁力变化。得出的结论是,在消耗无功功率时,导致涡轮发电机工作条件恶化的最重要因素。
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引用次数: 0
Experience in Developing a Synchronous Electric Motor with Permanent Magnet Excitation 开发永磁励磁同步电机的经验
Q3 Engineering Pub Date : 2024-04-04 DOI: 10.3103/s1068371224010115
A. V. Zakharov, A. S. Kobelev, S. V. Kudryashov, S. A. Zhuravlev

Abstract

Synchronous electric motors with excitation from permanent magnets (SMPM) with a rotor design in which the magnets are constructed into the core slots, due to which there is a significant difference of magnetic conductivities along the longitudinal and transverse axes, are discussed. These machines are used in light electric transport: electric and hybrid cars and electric and hybrid buses. Unlike SMPM with a rotor design that has surface magnets, SMPM with built-in magnets can operate above rated speeds by rational controlling the stator current. At the same time, the development of SMPM with built-in permanent magnets is a task associated with the construction and optimization of not only the design of the machine, but also the selection of inverter components and configuration of the control system.

摘要 讨论了永磁体励磁同步电机(SMPM)的转子设计,其中磁体安装在铁芯槽中,因此沿纵向和横向的磁导率存在显著差异。这些机器用于轻型电动交通工具:电动和混合动力汽车以及电动和混合动力公共汽车。与采用表面磁体的转子设计的 SMPM 不同,内置磁体的 SMPM 可通过合理控制定子电流在额定转速以上运行。与此同时,开发内置永磁体的 SMPM 不仅需要构建和优化机器的设计,还需要选择逆变器组件和配置控制系统。
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引用次数: 0
Features of Operation of Induction Motors with a Combined Winding in a Frequency-Controlled Electric Drive 带组合绕组的感应电机在变频调速电力驱动装置中的运行特点
Q3 Engineering Pub Date : 2024-04-04 DOI: 10.3103/s1068371224010061
Yu. B. Kazakov, I. A. Kravale, M. A. Kiselev, I. V. Novikov, A. V. Zakharov

Abstract

An increase in losses and electromagnetic noise of induction motors and wave overvoltages when a motor is operating from a frequency converter with pulse-width modulation of voltage due to higher temporary harmonics of voltage and current to a certain extent can be compensated by the use of combined windings, which reduce differential dissipation and inductive reactance, weakening of wave overvoltages, additional losses, and electromagnetic noise from a magnetic field’s higher spatial harmonics. The use of a combined winding with a doubled number of parallel structures when connecting the star and triangle (D connection) windings in parallel in frequency-controlled asynchronous motors makes it possible to use thinner wires and to reduce additional losses and displacement of current by higher temporary harmonics of a current. Parameters of combined windings must be selected based on a refined analysis of electromagnetic processes due to the possibility of the occurrence of equalizing currents in the circuits between the phases of different windings. An algorithm for the interaction of coupled circuit electromechanical and field electromagnetic models is proposed, which allows for refined modeling of an operation of induction motors with combined windings from a frequency converter with pulse-width modulation of voltage. When connecting the star and triangle circuits in series in a combined winding, compared to a three-phase winding, the pattern of voltage pulses, the initial and final pulse voltage distributions along the turns change, and the potential operating conditions of a winding are improved.

摘要 使用组合绕组可以在一定程度上补偿由于电压和电流的临时高次谐波而导致的感应电动机损耗和电磁噪声的增加,并减弱波形过电压、附加损耗和磁场空间高次谐波产生的电磁噪声。在变频调速异步电机中并联星形绕组和三角形绕组(D 型连接)时,使用并联结构数量加倍的组合绕组,可以使用更细的导线,减少额外损耗和电流高次临时谐波造成的电流位移。由于不同绕组相间的电路中可能会出现均衡电流,因此必须根据对电磁过程的精细分析来选择组合绕组的参数。本文提出了一种用于耦合电路机电模型和现场电磁模型相互作用的算法,该算法允许对带有组合绕组的感应电机的运行进行精细建模,这些组合绕组来自带有脉宽调制电压的变频器。在组合绕组中串联星形和三角形电路时,与三相绕组相比,电压脉冲的模式、沿匝的初始和最终脉冲电压分布都会发生变化,绕组的潜在运行条件也会得到改善。
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引用次数: 0
A Design Model of an Induction Motor with Ring Windings for Driving a Nuclear Waste Shredder 用于驱动核废料粉碎机的环形绕组感应电机设计模型
Q3 Engineering Pub Date : 2024-04-04 DOI: 10.3103/s1068371224010097
O. V. Tikhonova, S. L. Kulakov, I. V. Malygin, A. T. Plastun

Abstract

The development of a computational model of an induction motor with ring windings (IMRWs) for processing of nuclear waste is considered. At the first stage of the work, the overload capacity of the computational model of an IMRW was analyzed using the finite element method, the calculation being carried out in stages, taking into account the production and physical features of the IMRW prototype design. The IMRW model takes into account the influence of the oxide film on stator core sheets, technological gaps, eddy currents, and temperature conditions of the stator and rotor windings on the overload capacity of the IMRW. At the second stage, the mechanical characteristics of the IMRW were analytically calculated in the Ansys program using the parameters of the equivalent circuit determined by analyzing the design model of the motor. The calculated mechanical characteristics of an IMRW obtained by the finite element method and analytical calculation are compared with the results of testing the prototype.

摘要 考虑开发用于处理核废料的带环形绕组感应电动机(IMRWs)的计算模型。在工作的第一阶段,使用有限元方法分析了带环形绕组感应电动机计算模型的过载能力,计算是分阶段进行的,考虑到了带环形绕组感应电动机原型设计的生产和物理特征。IMRW 模型考虑了定子铁芯片上的氧化膜、技术间隙、涡流以及定子和转子绕组的温度条件对 IMRW 过载能力的影响。第二阶段,利用分析电机设计模型确定的等效电路参数,在 Ansys 程序中对 IMRW 的机械特性进行了分析计算。通过有限元法和分析计算得出的 IMRW 机械特性与原型测试结果进行了比较。
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引用次数: 0
High-Speed Models of Systems with Modular Multi-Level Converters 带模块化多级转换器的系统高速模型
Q3 Engineering Pub Date : 2024-04-04 DOI: 10.3103/s1068371224010103
A. G. Vorontsov, M. V. Pronin, A. P. Soloviev, V. V. Glushakov, G. G. Rozbitsky, I. A. Dikun

Abstract

Modular multilevel converters (MMСs) constructed on low-voltage half bridge transistor–capacitor blocks (TCBs) allow one to create high-voltage installations without transformers. Such converters are used in wind power plants, power transmission, and electric drives. The energy reserves in an MMC are distributed among many TCBs. The voltages and currents at the input and output of the MMC have small distortions, but control systems are complex, A decrease in the frequency of currents at the input or output of the MMC leads to an increase in voltage ripples of TCB capacitors. To limit pulsations, internal contour currents are introduced into the MMC, and zero sequence components are used in control devices. The article presents high-speed models of systems with MMC, and the efficiency of control algorithms for an inverter with a passive load, as well as an electric drive with MMC and an induction motor is evaluated. A three-phase current corrector is proposed, which reduces their amplitude and reduces distortion.

摘要基于低压半桥晶体管-电容器模块(TCB)的模块化多电平转换器(MMС)可以在不使用变压器的情况下创建高压装置。这种转换器可用于风力发电厂、电力传输和电力驱动。MMC 中的能量储备分布在许多 TCB 中。MMC 输入和输出端的电压和电流失真很小,但控制系统却很复杂,MMC 输入或输出端的电流频率降低会导致 TCB 电容器的电压纹波增加。为限制脉动,可在 MMC 中引入内部轮廓电流,并在控制装置中使用零序元件。文章介绍了带有 MMC 的系统的高速模型,并评估了带有无源负载的逆变器以及带有 MMC 和感应电机的电力驱动装置的控制算法效率。文章提出了一种三相电流校正器,可降低电流振幅并减少失真。
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引用次数: 0
The Main Directions of the Ruselprom Concern’s Work on the Development and Improvement of AC Electric Machines and Drives 俄罗斯工业股份公司开发和改进交流电机和驱动器的主要方向
Q3 Engineering Pub Date : 2024-04-04 DOI: 10.3103/s1068371224010036
A. A. Bedeker

Abstract

The article presents the results of the developments carried out by the Joint Engineering and Design Center of the Russian electrotechnical concern Ruselprom—Ruselprom Engineering Center. The results of the development of the developed products by the production units of the concern are presented. The directions of further development in the field of electrical engineering identified by a large domestic manufacturer of electric machines as the most significant are outlined.

文章介绍了俄罗斯电工企业 Ruselprom-Ruselprom 工程中心联合工程设计中心的开发成果。文章还介绍了该公司生产单位对所开发产品的开发成果。此外,还概述了国内一家大型电机制造商确定的电气工程领域最重要的进一步发展方向。
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引用次数: 0
Development of a Technological Electron Gun Magnetic Deflection Unit 开发技术电子枪磁偏转装置
Q3 Engineering Pub Date : 2024-04-04 DOI: 10.3103/s106837122401005x
A. L. Goncharov, A. V. Shcherbakov, A. S. Kozhechenko, D. A. Gaponova, R. V. Rodyakina, A. P. Sevryukov

Abstract

A comprehensive methodology for designing a magnetic deflection system for a technological electron gun is proposed. The feasibility of using deflection systems with an internal magnetic circuit and toroidal coil sections to form deflection fields that ensure azimuth beam rotation with a constant angle of deviation from the vertical axis is substantiated. The potential of computer modeling is shown both at the stage of calculating the deflection field and beam displacement and at the stage of creating the design of the system frame for its subsequent manufacture based on 3D printing. The main coil parameters are determined, and the circuit diagram of a current stabilizer with external control from a digital-to-analog converter is developed. Dependences are presented showing the relationship between control signals and deflection angles in the developed unit prototype. It is shown that the proposed technique is universal and can be used to create electron-optical gun elements providing deflection, scanning, parallel transfer or adjustment of technological electron beams.

摘要 提出了为技术电子枪设计磁偏转系统的综合方法。使用带有内部磁路和环形线圈部分的偏转系统来形成偏转场,以确保光束在偏离垂直轴一定角度的情况下进行方位旋转的可行性得到了证实。无论是在计算偏转场和横梁位移阶段,还是在设计系统框架以便随后通过三维打印进行制造的阶段,计算机建模的潜力都得到了体现。确定了主要线圈参数,并绘制了通过数模转换器进行外部控制的电流稳定器电路图。在开发的装置原型中,显示了控制信号和偏转角之间的关系。结果表明,所提出的技术具有通用性,可用于制造电子光学枪元件,提供偏转、扫描、平行传输或调整技术电子束。
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引用次数: 0
An Analysis of the Influence of Radial Magnetic-Bearing Design on Magnetic Characteristics 径向磁轴承设计对磁特性的影响分析
Q3 Engineering Pub Date : 2024-02-08 DOI: 10.3103/s1068371223120076
F. R. Ismagilov, Sh. N. Sharafutdinov, I. I. Yamalov, D. A. Glumov

Abstract

The methods of designing modern radial magnetic bearings (RMBs) vary depending on the operating conditions, operating mode, and requirements conditioned by the outfit design. Insufficient accuracy in calculating design parameters due to imperfections of a design method can cause several issues, such as reduced bearing capacity of magnetic bearings and complication of control system algorithms. This article considers various radial magnetic-bearing designs and, then, reveals the dependence of the electromagnetic force and flux density on the winding current by making a finite-element analysis of the magnetic circuit.

摘要 现代径向磁悬浮轴承(RMB)的设计方法因运行条件、运行模式和装备设计要求的不同而各异。由于设计方法的不完善而导致的设计参数计算精度不足可能会引起一些问题,如降低磁悬浮轴承的承载能力和使控制系统算法复杂化。本文考虑了各种径向磁悬浮轴承设计,然后通过对磁路进行有限元分析,揭示了电磁力和磁通密度与绕组电流的关系。
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引用次数: 0
On the Fire Safety of Electric-Vehicle Battery Packs 电动汽车电池组的防火安全
Q3 Engineering Pub Date : 2024-02-08 DOI: 10.3103/s1068371223120039
R. G. Akmaletdinov, A. V. Mesropyan, E. A. Pronin

Abstract

A review is presented of the literature on the problems of fire safety of electric vehicles, early fire-warning methods based on the electrochemical mechanism, fire protection at the level of electrochemical reactions, and improvement of cell design and fire detection. Prospects for improving fireproof structures are considered.

摘要 综述了有关电动汽车防火安全、基于电化学机理的早期火灾预警方法、电化学反应层面的防火以及改进电池设计和火灾探测等问题的文献。还考虑了改进防火结构的前景。
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引用次数: 0
期刊
Russian Electrical Engineering
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