Log in

Relevant bibliographies by topics / Armature current / Journal articles

To see the other types of publications on this topic, follow the link: Armature current.

Journal articles on the topic 'Armature current'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Armature current.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Liu, Jingang, Yi Jiang, Zizhou Su, Weisheng Ye, Tao Zhang, and Wanying Wang. "Parametric analysis and design of the initial contact state of a 400kA pulsed current C-armature." Journal of Physics: Conference Series 2478, no. 9 (2023): 092003. http://dx.doi.org/10.1088/1742-6596/2478/9/092003.

Full text

Abstract:

Abstract As a key component of an electromagnetic rail launcher, the armature plays a vital role in the performance of the electromagnetic launch. In order to solve the contact area and structural design problems of C-type armatures under large pulse current conditions, the material and initial contact state of a certain calibre C-type armature are studied, and the initial structural parameters of C-type armatures under 400kA through-current capacity and four times the calibre loading position constraints are analysed and calculated, together with the contact characteristics of armatures made

APA, Harvard, Vancouver, ISO, and other styles

2

Roe, A. C. "RECONNECTING DIRECT-CURRENT ARMATURES-TYPES OF ARMATURE COILS." Journal of the American Society for Naval Engineers 36, no. 3 (2009): 527–30. http://dx.doi.org/10.1111/j.1559-3584.1924.tb05484.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Korytchenko, K. V., V. F. Bolyukh, S. G. Buriakovskyi, Y. V. Kashansky, and O. I. Kocherga. "Plasma acceleration in the atmosphere by pulsed inductive thruster." Electrical Engineering & Electromechanics, no. 4 (June 21, 2024): 61–69. http://dx.doi.org/10.20998/2074-272x.2024.4.08.

Full text

Abstract:

Introduction. One of the directions of development of plasma technologies consists in the formation of gas-metal plasma formations and throwing them to a certain distance. Known thrusters of plasma formation either have an electrode system that is prone to erosion, or a discharge system in a solid dielectric substance in which ablation occurs, or a complex gas-dynamic system with fuel supply. They do not provide acceleration of plasma formation in the atmosphere for a significant distance. Purpose. A theoretical and experimental study of electromechanical and thermophysical processes in a plas

APA, Harvard, Vancouver, ISO, and other styles

4

Wang, Dexiang, Baoming Li, and Haiyuan Li. "Three-dimensional magneto-thermo-mechanical coupling analysis with the influence of velocity skin effect." Journal of Physics: Conference Series 2478, no. 8 (2023): 082014. http://dx.doi.org/10.1088/1742-6596/2478/8/082014.

Full text

Abstract:

Abstract In this paper, the three-dimensional magnetic diffusion governing equations of an electromagnetic railgun are derived based on Maxwell’s equations and coupled with the energy equations. The finite element method is used to calculate the current density, temperature, and electromagnetic force distribution for armature velocities of 0, 200, 600, and 1200 m/s. The results show that there is a current concentration phenomenon on the rail’s inner surface and the trailing edge of the contact interface; the temperature rise of the rail along the moving direction of the armature tends to decr

APA, Harvard, Vancouver, ISO, and other styles

5

Korytchenko, K. V., V. F. Bolyukh, S. G. Buriakovskyi, Y. V. Kashansky, and O. I. Kocherga. "Plasma acceleration in the atmosphere by pulsed inductive thruster." Electrical Engineering and Electromechanics 2024, no. 4 (2024): 61–69. https://doi.org/10.20998/2074-272X.2024.4.08.

Full text

Abstract:

<strong><em>Introduction. </em></strong><em>One of the directions of development of plasma technologies consists in the formation of gas-metal plasma formations and throwing them to a certain distance. Known thrusters of plasma formation either have an electrode system that is prone to erosion, or a discharge system in a solid dielectric substance in which ablation occurs, or a complex gas-dynamic system with fuel supply. They do not provide acceleration of plasma formation in the atmosphere for a significant distance. </em><strong><em>Purpose</em></strong><strong><em>.</em></strong>

APA, Harvard, Vancouver, ISO, and other styles

6

Sergey, Goolak, Tkachenko Viktor, Sapronova Svitlana, Spivak Oleksandr, Riabov Ievgen, and Ostroverkh Oleksandr. "Determination of inductances for pulsating current traction motor." Technology audit and production reserves 2, no. 1(58) (2021): 40–43. https://doi.org/10.15587/2706-5448.2021.229217.

Full text

Abstract:

<em>The object of research is a pulsating current traction motor. To improve the accuracy of its mathematical model, it is necessary to use the values of the parameters that are determined in experimental studies of the electric motor. In particular, it is important to use in the model of the electric motor inductance obtained experimentally. A method is proposed for calculating the inductance of the armature winding, main poles, additional poles and compensation winding and the total inductance of the traction motor armature circuit. The calculations are based on the results of the indirect i

APA, Harvard, Vancouver, ISO, and other styles

7

Zhang, Pengxiang, Tao Shu, and Tengda Li. "Electromagnetic Characteristics Analysis of Quadrupole Compound Orbital Electromagnetic Launcher with Different Configurations." Electronics 11, no. 17 (2022): 2650. http://dx.doi.org/10.3390/electronics11172650.

Full text

Abstract:

During the operation of the Quadrupole Compound Orbital electromagnetic launcher, the current is easy to gather in the armature and the rail contact surface. Serious turn and arc ablation can occur, causing damage to the rail and the armature and affecting the life of the launcher. To better solve the thermal ablation problem of the armature and the rail, three different configurations of the rail and the armature are established, and the current density, magnetic field distribution and electromagnetic force of the rail and the armature are compared and analyzed using the finite element method

APA, Harvard, Vancouver, ISO, and other styles

8

Abdullah, Mohamad Nazir, Muhammad Hafeez Mohamed Hariri, Mohd Khairunaz Mat Desa, Mohd Nadzri Mamat, and Suardi Kaharuddin. "Analysis and implementation of peak armature current (Imax) of a chopper-fed DC-DC motor drive in DCM." International Journal of Power Electronics and Drive Systems (IJPEDS) 16, no. 1 (2025): 96. https://doi.org/10.11591/ijpeds.v16.i1.pp96-105.

Full text

Abstract:

At low frequencies of operation in a chopper-fed direct current (DC) motor drive, the armature current may become discontinuous thus the controller operates in discontinuous conduction mode (DCM). Since the minimum armature current is zero in DCM, the analysis of peak armature current (Imax) is to investigate the ripple content in armature current at different values of duty cycle which will help in decreasing the peaky current of DC motor during operation. The simulation was carried out using MATLAB-Simulink software and the laboratory setup was based on Atmega 328 microcontroller board. In t

APA, Harvard, Vancouver, ISO, and other styles

9

Abdullah, Mohamad Nazir, Muhammad Hafeez Mohamed Hariri, Mohd Khairunaz Mat Desa, and Mohd Nadzri Mamat. "Analysis and implementation of peak armature current (Imax) of a chopper-fed DC-DC motor drive in DCM." International Journal of Power Electronics and Drive Systems 16, no. 1 (2025): 96–105. https://doi.org/10.11591/ijpeds.v16.i1.pp96-105.

Full text

Abstract:

At low frequencies of operation in a chopper-fed direct current (DC) motor drive, the armature current may become discontinuous thus the controller operates in discontinuous conduction mode (DCM). Since the minimum armature current is zero in DCM, the analysis of peak armature current (Imax) is to investigate the ripple content in armature current at different values of duty cycle which will help in decreasing the peaky current of DC motor during operation. The simulation was carried out using MATLAB-Simulink software and the laboratory setup was based on Atmega 328 microcontroller board. In t

APA, Harvard, Vancouver, ISO, and other styles

10

Goolak, Sergey, Viktor Tkachenko, Svitlana Sapronova, Oleksandr Spivak, Ievgen Riabov, and Oleksandr Ostroverkh. "Determination of inductances for pulsating current traction motor." Technology audit and production reserves 2, no. 1(58) (2021): 40–43. http://dx.doi.org/10.15587/2706-5448.2021.229217.

Full text

Abstract:

The object of research is a pulsating current traction motor. To improve the accuracy of its mathematical model, it is necessary to use the values of the parameters that are determined in experimental studies of the electric motor. In particular, it is important to use in the model of the electric motor inductance obtained experimentally. A method is proposed for calculating the inductance of the armature winding, main poles, additional poles and compensation winding and the total inductance of the traction motor armature circuit. The calculations are based on the results of the indirect induc

APA, Harvard, Vancouver, ISO, and other styles

11

Gao, Yuan, Ya-zhou Zhang, Yan-ming Li, and Bin Zhao. "Numerical simulation analysis of armature force under muzzle arc." Journal of Physics: Conference Series 2478, no. 9 (2023): 092001. http://dx.doi.org/10.1088/1742-6596/2478/9/092001.

Full text

Abstract:

Abstract the metal component arc plasma at the muzzle of railgun is simulated by magneto-hydro-dynamic(MHD) model, and the flow field under the interaction between armature and muzzle arc jet during the movement of muzzle position is modeled and simulated. The sheath model is considered in the plasma simulation near armature during the movement. According to the calculation results of the MHD model, the transient current curve through the armature is analyzed, and based on the results, the transient electromagnetic field simulation of the armature-arc-rail system is realized. The results show

APA, Harvard, Vancouver, ISO, and other styles

12

Kovalov, V. M., and Yu V. Kovalova. "Increasing the Energy Efficiency of Traction Electric Drives of Direct Current." Science and Transport Progress, no. 1(105) (March 27, 2024): 42–50. http://dx.doi.org/10.15802/stp2024/303079.

Full text

Abstract:

Purpose. The work is aimed at improving the energy efficiency of direct current traction electric drives of electric transport by introducing transistor pulse width converters (PWC) with an optimal switching frequency to minimize total electrical losses in the electric drive. The electrical losses of traction electric drives consist of electrical losses in the armature winding and in the PWC transistors. Methodology. To study the dependence on the switching frequency of transistors, the electrical losses in the armature winding and PWC transistors are divided into two parts: static losses from

APA, Harvard, Vancouver, ISO, and other styles

13

Mykhailo, Kotsur, Yarymbash Dmytro, Kotsur Igor, and Yarymbash Serhiy. "IMPROVING EFFICIENCY IN DETERMINING THE INDUCTANCE FOR THE ACTIVE PART OF AN ELECTRIC MACHINE'S ARMATURE BY METHODS OF FIELD MODELING." Eastern-European Journal of Enterprise Technologies 6, no. 5 (102) (2019): 39–47. https://doi.org/10.15587/1729-4061.2019.185136.

Full text

Abstract:

Theoretical studies of electromagnetic processes in the active part of an electric machine's armature have been carried out in a dynamic short-circuit mode using a three-dimensional magnetic field model represented as a combination of electrical circuits of phase windings and a geometric 3D region. An approach was proposed to determine self- and mutual inductances between phases of the electric machine armature winding based on decomposition of electromagnetic processes by means of various combinations of powering the armature phase windings. Laws of electromagnetic processes resulting fro

APA, Harvard, Vancouver, ISO, and other styles

14

Yasuhiro, Komatsu, Syed Abdul Kadir Zawawi, and Yoshihiko Araki. "Maximum Output Operation by Equivalently Field Weakening and Optimal Parameters of BLDC Motor." Advanced Materials Research 566 (September 2012): 170–81. http://dx.doi.org/10.4028/www.scientific.net/amr.566.170.

Full text

Abstract:

Permanent-magnet brushless direct-current motors are easy to maintain, compared with direct-current motors. Therefore, they are attracting attention. In this paper, the authors discuss a non-salient pole brushless direct-current motors. Usually, the quadrature armature current which contributes to torque generation is supplied in this motor. But, in this case that the source voltage cannot be increased by supplying the direct armature current, that is, equivalently field weakening, a quadrature armature current can be increased. Consequently, the motor torque increases. In the case that the lo

APA, Harvard, Vancouver, ISO, and other styles

15

Bolyukh, V. F., and I. S. Shchukin. "Influence of limiting the duration of the armature winding current on the operating indicators of a linear pulse electromechanical induction type converter." Electrical Engineering & Electromechanics, no. 6 (December 3, 2021): 3–10. http://dx.doi.org/10.20998/2074-272x.2021.6.01.

Full text

Abstract:

Introduction. Linear pulse electromechanical converters of induction type (LPECIT) are used in many branches of science and technology as shock-power devices and electromechanical accelerators. In them, due to the phase shift between the excitation current in the inductor winding and the induced current in the armature winding, in addition to the initial electrodynamic forces (EDF) of repulsion, subsequent EDF of attraction also arise. As a result, the operating indicators of LPECIT are reduced. The purpose of the article is to increase the performance of linear pulse electromechanical inducti

APA, Harvard, Vancouver, ISO, and other styles

16

Zhang, Changgeng, Xiaoxiao Liu, Liang Jin, Rongge Yan, and Qingxin Yang. "Contact Resistance Modeling Under Complex Wear Conditions Based on Fractal Theory." Materials 18, no. 13 (2025): 3060. https://doi.org/10.3390/ma18133060.

Full text

Abstract:

The muzzle velocity of electromagnetic rail launchers approaches 1550 m/s, exhibiting typical hypervelocity electrical contact characteristics. During the electromagnetic launching process, extreme conditions, such as high current density, high temperature rise, and strong strain can cause wear on the surfaces of the armature and rail. Electromagnetic launch tests are conducted to study the wear conditions of the rail surface and the relationship between the wear state and contact resistance. After the rail is abraded by hundreds of launching armatures, its surface 2D profile and morphological

APA, Harvard, Vancouver, ISO, and other styles

17

Buang, Misbahuddin. "PEMODELAN DAN PENGENDALIAN MOTOR DC TYPE DRIPPROOF-SEPARATELY VENTYLATED DENGAN TEGANGAN JANGKAR." JNSTA ADPERTISI JOURNAL 3, no. 1 (2023): 12–24. http://dx.doi.org/10.62728/jnsta.v3i1.390.

Full text

Abstract:

A dc motor is a machine that converts dc electrical energy into mechanical energy. One way to assess the work of a dc motor is to know the amount of current and speed in the initial conditions before adjustments/changes are made. Current and speed settings can be made by adjusting the motor armature voltage at starting. The greater the time the armature voltage reaches its nominal value, the armature current will be smaller so that it is safe for the motorbike and vice versa.

APA, Harvard, Vancouver, ISO, and other styles

18

Liu, Peng, Liyun Fan, Qaisar Hayat, De Xu, Xiuzhen Ma, and Enzhe Song. "Research on Key Factors and Their Interaction Effects of Electromagnetic Force of High-Speed Solenoid Valve." Scientific World Journal 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/567242.

Full text

Abstract:

Analysis consisting of numerical simulations along with lab experiments of interaction effects between key parameters on the electromagnetic force based on response surface methodology (RSM) has been also proposed to optimize the design of high-speed solenoid valve (HSV) and improve its performance. Numerical simulation model of HSV has been developed in Ansoft Maxwell environment and its accuracy has been validated through lab experiments. Effect of change of core structure, coil structure, armature structure, working air gap, and drive current on the electromagnetic force of HSV has been ana

APA, Harvard, Vancouver, ISO, and other styles

19

Bukhari, Syed Sabir Hussain, Fareed Hussain Mangi, Irfan Sami, Qasim Ali, and Jong-Suk Ro. "High-Harmonic Injection-Based Brushless Wound Field Synchronous Machine Topology." Mathematics 9, no. 15 (2021): 1721. http://dx.doi.org/10.3390/math9151721.

Full text

Abstract:

This paper discusses the design and analysis of a high-harmonic injection-based field excitation scheme for the brushless operation of wound field synchronous machines (WFSMs) in order to achieve a higher efficiency. The proposed scheme involves two inverters. One of these inverters provides the three-phase fundamental-harmonic current to the armature winding, whereas the second inverter injects the single-phase high-harmonic i.e., 6th harmonic current in this case, to the neutral-point of the Y-connected armature winding. The injection of the high-harmonic current in the armature winding deve

APA, Harvard, Vancouver, ISO, and other styles

20

S., Goolak, Riabov Ie., Tkachenko V., Sapronova S., and Rubanik I. "Model of pulsating current traction motor taking into consideration magnetic losses in steel." Electrical Engineering & Electromechanics, no. 6 (December 3, 2021): 11–17. https://doi.org/10.20998/2074-272X.2021.6.02.

Full text

Abstract:

<em>The <strong>aim</strong> of the work is to develop a mathematical model of the traction motor of the pulsating current of an electric locomotive taking into account the magnetic losses in the motor steel to determine the starting parameters depending on the voltage of the armature winding.<strong> Methodology</strong>. Mathematical modeling of electromagnetic processes in a traction motor of pulsating current is applied taking into account the nonlinear nature of the armature inductance, the inductance of the excitation winding and the nonlinear nature of the universal magne

APA, Harvard, Vancouver, ISO, and other styles

21

GRIDIN, Vladimir M. "Electromagnetic Processes in Two-Inductor Brushless DC Motors." Elektrichestvo, no. 3 (2022): 43–48. http://dx.doi.org/10.24160/0013-5380-2022-3-43-48.

Full text

Abstract:

The electromagnetic processes that take place in two brushless direct current (BLDC) motors containing a three-section armature winding, three power transistors and two cylindrical magnet type inductors are studied. One of these motors has a conventional drum armature winding and two inductors with the numbers of their radial poles differing from each other by a factor of three. The other motor has a toroidal armature winding and two inductors with the numbers of their radial poles differing from each other by a factor of two. The electromagnetic processes were studied for the armature winding

APA, Harvard, Vancouver, ISO, and other styles

22

GRIDIN, Vladimir M. "Electromagnetic Processes in Two-Inductor Brushless DC Motors." Elektrichestvo, no. 3 (2022): 43–48. http://dx.doi.org/10.24160/0013-53-2022-3-43-48.

Full text

Abstract:

The electromagnetic processes that take place in two brushless direct current (BLDC) motors containing a three-section armature winding, three power transistors and two cylindrical magnet type inductors are studied. One of these motors has a conventional drum armature winding and two inductors with the numbers of their radial poles differing from each other by a factor of three. The other motor has a toroidal armature winding and two inductors with the numbers of their radial poles differing from each other by a factor of two. The electromagnetic processes were studied for the armature winding

APA, Harvard, Vancouver, ISO, and other styles

23

Zheng, Fangzheng, Runxiang Jiang, Mengkun Lu, Hanning Qian, and Feihong Yue. "Study on the influence of different thickness of armature structure on the emission performance of electromagnetic induction coil launcher." Journal of Physics: Conference Series 2247, no. 1 (2022): 012025. http://dx.doi.org/10.1088/1742-6596/2247/1/012025.

Full text

Abstract:

Abstract In the armature structure of traditional electromagnetic induction coil launcher, the armature tail melted due to heat accumulation. In this paper, three new armature structures are proposed. Based on the finite element software maxwell2D, the single-stage electromagnetic induction coil launcher, model is established. The performance indexes of traditional and new armature structures are compared, and the influence of the thickness of traditional armature structure and the side thickness of new structure on temperature rise and electromagnetic performance is studied. On the basis of M

APA, Harvard, Vancouver, ISO, and other styles

24

V.F., Bolyukh, and Shchukin I.S. "Influence of limiting the duration of the armature winding current on the operating indicators of a linear pulse electromechanical induction type converter." Electrical Engineering & Electromechanics, no. 6 (December 3, 2021): 3–10. https://doi.org/10.20998/2074-272X.2021.6.01.

Full text

Abstract:

<strong><em>Introduction. </em></strong><em>Linear pulse electromechanical converters of induction type (LPECIT) are used in many branches of science and technology as shock-power devices and electromechanical accelerators. In them, due to the phase shift between the excitation current in the inductor winding and the induced current in the armature winding, in addition to the initial electrodynamic forces (EDF) of repulsion, subsequent EDF of attraction also arise. As a result, the operating indicators of LPECIT are reduced.<strong> The purpose </strong>of the article is to incr

APA, Harvard, Vancouver, ISO, and other styles

25

Kovalov, Viktor, and Julia Kovalova. "COMPUTER OPTIMIZATION OF SWITCHING FREQUENCY OF TRANSISTOR PULSE-WIDTH CONVERTERS." Energy saving. Power engineering. Energy audit., no. 5-6(183-184) (November 23, 2023): 18–26. http://dx.doi.org/10.20998/2313-8890.2023.05.02.

Full text

Abstract:

The aim of the work is to develop algorithm for determining the optimal switching frequency of a transistor pulse-width converter (PWM) to minimize the total electrical losses in a DC drive. Electrical losses in the armature winding and in PWM transistors are divided into two components: static from the direct current component and dynamic. The latter include losses in the armature winding from the harmonic components of the current and losses in transistors from transient switching currents. Since the dynamic losses in transistors increase with increasing frequency, and in the armature windin

APA, Harvard, Vancouver, ISO, and other styles

26

Kovalov, V., and Yu Kovalova. "Minimization Electric Losses in Transistor DC Drives." Problems of the Regional Energetics, no. 4(56) (November 2022): 39–46. http://dx.doi.org/10.52254/1857-0070.2022.4-56.04.

Full text

Abstract:

This work is devoted to develop the algorithm for determining the optimal switching frequency of a transistor pulse-width converter (PWM) to minimize the total electric losses in a DC drive. Electric losses in the armature winding and in the PWM transistors are divided into two compo-nents: static, from the direct current component, and dynamic. The latter include losses in the armature winding from the harmonic components of the current and losses in transistors from transient switching currents. Since the dynamic losses in transistors increase with increasing frequency, and in the armature w

APA, Harvard, Vancouver, ISO, and other styles

27

Bukhari, Syed Sabir Hussain, Qasim Ali, Jesús Doval-Gandoy, and Jong-Suk Ro. "High-Efficient Brushless Wound Rotor Synchronous Machine Topology Based on Sub-Harmonic Field-Excitation Technique." Energies 14, no. 15 (2021): 4427. http://dx.doi.org/10.3390/en14154427.

Full text

Abstract:

This paper presents a new high-efficient three-phase brushless wound rotor synchronous machine (BL-WRSM) based on a sub-harmonic field excitation technique. In the proposed machine topology, the stator is equipped with two different three-phase windings: (1) main armature winding, and (2) additional armature winding. The main armature winding is based on a 4-pole winding configuration, whereas the additional armature winding is based on a 2-pole winding configuration. Both windings are supplied current from two different inverters, i.e., inverter-1, inverter-2, and simultaneously. Inverter-1 p

APA, Harvard, Vancouver, ISO, and other styles

28

Kang, Jiayu, Yuan Guan, and Xiaobo Wan. "Study on the Selection of Coil Energization Directions in Multistage Synchronous Induction Coil Launcher." Applied Sciences 14, no. 13 (2024): 5663. http://dx.doi.org/10.3390/app14135663.

Full text

Abstract:

In order to enhance the initial velocity and energy conversion efficiency of multi-stage synchronous induction coil launchers, the direction of coil energization for the drive coils is studied. There are typically two energization methods for multi-stage launching devices: (1) PP (Positive-Positive), where positive current is applied to all drive coils, and (2) PN (Positive-Negative), where currents in opposite directions are alternately applied to the drive coils. A finite element model of a four-stage coil launcher is established in ANSYS2022R2, and the acceleration effects of the armature u

APA, Harvard, Vancouver, ISO, and other styles

29

Krasteva, Anka, Donka Ivanova, and Vyara Ruseva. "Determination of the Parameters of a DC Motor with Parallel Excitation by a Genetic Algorithm." Journal of CIEES 4, no. 1 (2024): 7–10. http://dx.doi.org/10.48149/jciees.2024.4.1.1.

Full text

Abstract:

This paper presents a method of determining the parameters of a DC motor with parallel excitation by the use of a genetic algorithm. An approach is described for determining the mutual induction coefficient, the equivalent moment of inertia of the motor armature, the coefficient of friction and the friction torque based on the transient response graphs of the armature current and the rotational frequency of the motor. The measured resistance and inductive reactance of the armature and field windings of the motor are used as input data in the optimization procedure. The determined correlation c

APA, Harvard, Vancouver, ISO, and other styles

30

Cao, Rong Gang, and Xiang Cai Xu. "A Small-Sized and Battery-Supplied Data Acquisition System for the Electromagnetic Launcher to Measure Pulsed Magnetic Fields." Applied Mechanics and Materials 870 (September 2017): 85–92. http://dx.doi.org/10.4028/www.scientific.net/amm.870.85.

Full text

Abstract:

In rail-gun launchers, the main current is pulsed and can reach up to several MA. The width of the pulse is about 2 - 4ms. When pulsed currents are supplied from the pulse power, it will generate a large transient magnetic field around the armature. Meanwhile, the armature will be accelerated up to 2km/s by a large electromagnetic force. In order to research the features of the fields around contact surfaces between rails and the armature, it needs to use a small-sized and battery-supplied data acquisition system to measure pulsed magnetic fields. The B-dot probe acts as a sensor to acquire th

APA, Harvard, Vancouver, ISO, and other styles

31

Bolyukh, V. F., I. S. Schukin, and J. Lasocki. "Influence of the initial winding displacement on the indicators of the electromechanical induction accelerator of cylindrical configuration." Electrical Engineering & Electromechanics, no. 5 (October 18, 2021): 3–10. http://dx.doi.org/10.20998/2074-272x.2021.5.01.

Full text

Abstract:

Purpose. The purpose of the article is to determine the influence of the initial displacement of the windings on the indicators of an electromechanical induction accelerator of a cylindrical configuration with pulsed excitation from a capacitive energy storage and with short-term excitation from an alternating voltage source. Methodology. To take into account the interrelated electrical, magnetic, mechanical and thermal processes, as well as a number of nonlinear dependencies, we use the lumped parameters of the windings, and the solutions of the equations describing these processes are presen

APA, Harvard, Vancouver, ISO, and other styles

32

Ermawati, Ermawati, Fadhli Fadhli, Machdalena Machdalena, Engla Harda Arya, and Perdi Pernanda Lubis. "Analisa Karakteristik Generator Sinkron Terhadap Perubahan Beban Daya Aktif." Jurnal Surya Teknika 10, no. 1 (2023): 698–705. http://dx.doi.org/10.37859/jst.v10i1.4983.

Full text

Abstract:

Generators are electric machines that are used as generators of electrical energy, namely converting mechanical energy into electrical energy. Mechanical energy is obtained from the primover which can be a diesel engine, or something else. In large generators, conversion tools are often used, namely synchronous generators. so that the performance of the generator to be optimal it must be maintained stability. The purpose of this study is to examine and see the performance of synchronous generators against changes in active power load. From the analysis results, it is found that the lowest exci

APA, Harvard, Vancouver, ISO, and other styles

33

Oti, Stephen Ejiofor, Stephen C. Agada, Chinedu Obe, Ahmed Salihu, and Uche C. Ogbuefi. "Dynamics of Speed Control of Dc Motor using Combine Armature and Field Control with Pi Controller." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 3585–91. https://doi.org/10.35940/ijeat.C6043.029320.

Full text

Abstract:

This work examines the intrigues associated with the speed control of DC motor by nonlinear joint control of the voltage of the armature cum the field current in conjunction with the proportional integral controller. In the case of controlling the armature, the field current component is kept constant while the armature in contained with variable voltage. However, in the case of controlling the field, the voltage of the armature is kept constant while the field contends with a variable voltage. Both the field and the control of armature were used to acquire a DC motor speed control enhancement

APA, Harvard, Vancouver, ISO, and other styles

34

Sulejmanov, R. Ya. "Improvement of the system of auto-regulation of braking modes of an electric train with a pulse converter." Herald of the Ural State University of Railway Transport, no. 1 (2022): 72–80. http://dx.doi.org/10.20291/2079-0392-2022-1-72-80.

Full text

Abstract:

The article discusses the features of automatic regulation of the process of electric braking of a DC electric train. The peculiarity of this process is that traction engines switch to generator mode of operation to reduce the travelling speed. Industrial generators operate at a constant rotational speed and constant voltage. On an electric rolling stock in braking mode, electric machines operate at a continuously changing rotational speed. At the same time, the objective is to maintain a constant level of the set value of the braking force to ensure comfortable conditions for passengers. At t

APA, Harvard, Vancouver, ISO, and other styles

35

Li, Wenchao, Ying Zhang, Zehui Liu, Danni Luo, Youlong Wang, and Yaohong Sun. "Research on Self-exciting Air-core Pulsed Alternator Considering Armature Reaction." E3S Web of Conferences 252 (2021): 02002. http://dx.doi.org/10.1051/e3sconf/202125202002.

Full text

Abstract:

Compared with the traditional synchronous generator with iron core structure, air-core pulse alternator usually adopts self-excitation to establish a higher field current to meet its demand for high flux density. In this paper, the topology of the self-exciting rectifier is determined to be the full bridge rectifier by discussing the respective application scope of the full bridge and the half wave rectifier. Considering the armature reaction, the self-excitation process and the coupling relationship between the field winding and the armature winding are analyzed. According to the commutation

APA, Harvard, Vancouver, ISO, and other styles

36

Dr. Adel M. Dakhil and Dr. Basil H. Jasim. "Speed Sensorless Control Based Artificial Neural Network for Direct Current Motor." University of Thi-Qar Journal for Engineering Sciences 5, no. 1 (2014): 73–84. http://dx.doi.org/10.31663/utjes.v5i1.613.

Full text

Abstract:

In this paper, A robust adaptive speed sensorless by a neural network approach of a separately excited (DC) motor without the use of speed sensors is presented.The simulation carried out by Matlab backage. The actual speed is estimated using a feed-forward neural network, the neural estimator have three inputs which are armature current, armature voltage, and the speed in the previous step of time; and one output which represents the estimated speed. The obtained results are presented to show the validity and efficiency of sensorless control scheme, which in turn obtains high performances.

APA, Harvard, Vancouver, ISO, and other styles

37

Kuznetsov, A. I. "Influence of contact network voltage fluctuations on current transients in the electric locomotive power circuit." Herald of the Ural State University of Railway Transport, no. 2 (2022): 32–40. http://dx.doi.org/10.20291/2079-0392-2022-2-32-40.

Full text

Abstract:

The statistics of electric arc transfers along the collector of traction electric motors of the 2ES6 electric locomotive for 2020 are given. It is noted that half of the failures are associated with a potential spark on the collector, which indicates increased armature currents in the electric locomotive power circuit. The given voltage curve of the contact network also indicates that the power circuit is subject to constant current fluctuations. In the model of the power circuit of the 2ES6 electric locomotive, the mechanical component of the drive has been modified. It takes into account the

APA, Harvard, Vancouver, ISO, and other styles

38

Parks, Paul B. "Current melt‐wave model for transitioning solid armature." Journal of Applied Physics 67, no. 7 (1990): 3511–16. http://dx.doi.org/10.1063/1.345342.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Yan, Rongge, Kang An, Qingxin Yang, and Jinbo Jiang. "Study of Dynamic Inductance Gradient of Augmented Electromagnetic Rail Launcher Considering High-Speed Motion of Armature." Applied Sciences 13, no. 15 (2023): 9028. http://dx.doi.org/10.3390/app13159028.

Full text

Abstract:

The rail inductance gradient is an important parameter of the electromagnetic launcher. The calculation of its value is important for the design of the launcher structure and for predicting the motion behavior of the armature. The current research on the inductance gradient analysis method of the electromagnetic rail launcher mostly does not take into account the effects of launcher size and current diffusion. This method cannot describe its dynamic characteristics, and it results in a large error compared with the actual launch. Therefore, the paper first establishes an electromagnetic rail l

APA, Harvard, Vancouver, ISO, and other styles

40

Oleg, Potap, Kuvaiev Volodymyr, Boyko Oleg, Rybalchenko Maria, Shybakinskyi Volodymyr та Potap Мykhailo. "МІНІМІЗАЦІЯ МІЖКЛІТЬОВОГО НАТЯГУ НА БЕЗПЕРЕРВНИХ СТАНАХ ЗА ЯКІРНИМИ СТРУМАМИ ЕЛЕКТРОПРИВОДІВ ПРОКАТНИХ КЛІТЕЙ". System technologies 6, № 149 (2024): 23–41. http://dx.doi.org/10.34185/1562-9945-6-149-2023-03.

Full text

Abstract:

In the conditions of continuous rolling of graded profiles with no or too little metal deflection between adjacent rolling cages, the most promising is tension regulation based on information about the armature currents of the main electric drives. The effectiveness of the method of minimizing the tension of graded rolled products based on information about the armature currents of the main electric drives was investigated. The method is based on the hypothesis of the constant ratio of the armature current of the drive of the next cage to the armature current of the drive of the previous cage

APA, Harvard, Vancouver, ISO, and other styles

41

Yao, Jinming, Jianbo Bao, Jiandong Sun, Tengfei Zhang, and Qinglei Wang. "Melt Characteristics of a Deposited Layer on Rail Surface under Different Contact Models for Electromagnetic Launching." Electronics 13, no. 21 (2024): 4214. http://dx.doi.org/10.3390/electronics13214214.

Full text

Abstract:

Understanding the melting of the deposited layer is crucial for the armature’s melting process and sliding electrical contact performance. This study first establishes contact models for both the boundary lubrication state (BLS) and squeezed-film lubrication state (SFLS). A three-dimensional magnetic diffusion model is then constructed to simulate interface current distribution in these contact states. It is discovered that the maximum current density on the surface of the armature shows a decreasing trend as the thickness of the deposited layer grows. Then, a calculation model for the deposit

APA, Harvard, Vancouver, ISO, and other styles

42

Bukhari, Syed Sabir Hussain, Ghulam Jawad Sirewal, Faheem Akhtar Chachar, and Jong-Suk Ro. "Dual-Inverter-Controlled Brushless Operation of Wound Rotor Synchronous Machines Based on an Open-Winding Pattern." Energies 13, no. 9 (2020): 2205. http://dx.doi.org/10.3390/en13092205.

Full text

Abstract:

In an open-winding machine, three-phase stator currents can be controlled such that the input armature currents may contain the third-harmonic current component in addition to the fundamental. Considering this attribute of open-winding patterns, a harmonic current field excitation technique for a wound rotor synchronous machine (WRSM) is proposed in this paper based on the control of time-harmonic magneto-motive force. Two inverters connected to both terminals of the stator winding are controlled so that the input armature current generates an additional third-harmonic current component. This

APA, Harvard, Vancouver, ISO, and other styles

43

Kharlamov, V. V., Yu V. Moskalev, and S. N. Naiden. "Methodology for determining permissible operating modes of DC traction motor of quarry dump truck to ensure satisfactory commutation." Omsk Scientific Bulletin, no. 176 (2021): 36–40. http://dx.doi.org/10.25206/1813-8225-2021-176-36-40.

Full text

Abstract:

The article considers an approach to determining the permissible ranges of changes in the armature voltage, armature current and the excitation coefficient of the DC traction motor of a mining dump truck to ensure satisfactory commutation. When the DC motor is running in the specified modes, the probability of sparking in the collector-brush unit with a degree of 2 points will be minimal. A method for determining the permissible operating modes of a mining dump truck traction motor to ensure satisfactory commutation is proposed. The method allows, based on the analysis of experimental data, to

APA, Harvard, Vancouver, ISO, and other styles

44

V., F. Bolyukh, S. Schukin I., and Lasocki J. "Influence of the initial winding displacement on the indicators of the electromechanical induction accelerator of cylindrical configuration." Electrical Engineering & Electromechanics, no. 5 (October 18, 2021): 3–10. https://doi.org/10.20998/2074-272X.2021.5.01.

Full text

Abstract:

<strong><em>Purpose. </em></strong><em>The purpose of the article is to determine the influence of the initial displacement of the windings on the indicators of an electromechanical induction accelerator of a cylindrical configuration with pulsed excitation from a capacitive energy storage and with short-term excitation from an alternating voltage source. <strong>Methodology.</strong></em> <em>To take into account the interrelated electrical, magnetic, mechanical and thermal processes, as well as a number of nonlinear dependencies, we use the lumped parameters of the windings, a

APA, Harvard, Vancouver, ISO, and other styles

45

Altay, Abdullah, and Ali Bekir Yildiz. "Complete Electrical Equivalent Circuit Based Modeling and Analysis of Permanent Magnet Direct Current (DC) Motors." WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS 21 (August 2, 2022): 182–87. http://dx.doi.org/10.37394/23201.2022.21.20.

Full text

Abstract:

The modeling and analysis of permanent-magnet DC motor, whose attractiveness has increased with the availability of high-energy rare earth permanent magnet materials such as SmCo and NdFeB, is very important in recent years. The analysis of the established model is very important for researchers and engineers before siteworks. The most important features of the established model are that the equations are simple to obtain, the model can be set up using a simple platform, and ease of model analysis. Generally, for DC motor models, only the armature circuit model is given and only the equations

APA, Harvard, Vancouver, ISO, and other styles

46

Lazarev, George, Yakov Rybka, Mykola Reutskyi, Oleksandr Kriachok, and Anna Shymanska. "INCREASING THE MAXIMUM TORQUE OF SPECIAL DC MOTORS WITH PERMANENT MAGNETS." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 2(16) (July 4, 2023): 26–32. http://dx.doi.org/10.20998/2413-4295.2023.02.04.

Full text

Abstract:

In the article proposes methods of increasing the maximum torque of built-in direct current torque motors by varying their design (the diameter of the armature winding wire; the dimensions of the armature in order to increase the number of conductors located on its outer surface; by changing the winding scheme) while maintaining the connection dimensions, which is an urgent task when designing or modernizing electric motors for autonomous transport devices. A number of calculations and experiments were carried out, the analysis of which showed that when the diameter of the winding wire increas

APA, Harvard, Vancouver, ISO, and other styles

47

Sirewal, Ghulam Jawad, and Syed Sabir Hussain Bukhari. "Cost-Effective Scheme for a Brushless Wound Rotor Synchronous Machine." World Electric Vehicle Journal 12, no. 4 (2021): 194. http://dx.doi.org/10.3390/wevj12040194.

Full text

Abstract:

This paper proposes a new scheme for a brushless wound rotor synchronous machine (WRSM) by generating an additional, two-pole component of magneto-motive force (MMF) with a series-connected additional three-phase winding with the armature three-phase winding. Unlike existing brushless excitation schemes, which use the inverter to inject harmonic currents in the stator windings, the proposed scheme uses series-connected additional winding on the stator with the armature winding in a two-pole configuration. Consequently, as the current flows in the armature winding, it creates a fundamental rota

APA, Harvard, Vancouver, ISO, and other styles

48

Ogboi, Williams Uwabor, C. Idoniboyeobu D., and L. Braide S. "Performance Analysis of a Direct Current Motor Speed Control using Single-Phase H-Bridge Thyristor Rectifier." Journal of Recent Trends in Electrical Power System 6, no. 2 (2023): 5–13. https://doi.org/10.5281/zenodo.7947278.

Full text

Abstract:

<em>Direct Current (D.C.) motor is an important drive configuration for many applications that is required in automation movements. Thyristors are used to regulate the supply voltage in order to control the speed of the direct current motor. Thyristors have problem of overheating during installation hence, the need for a better cooling means via heat sink which reduces the heat level of the semiconductor for proper performance and good efficiency of the system. The aim of this research is to analyze the performance of a direct current motor speed using Thyristor. Armature Voltage Control metho

APA, Harvard, Vancouver, ISO, and other styles

49

Ryzhova, Elena L., and Vladislav Yu Osipov. "The use of technical means for diagnosing traction engines rolling stock." Modern Transportation Systems and Technologies 10, no. 4 (2024): 556–76. https://doi.org/10.17816/transsyst635142.

Full text

Abstract:

Aim. Demonstrate the practical significance of assessing the technical condition of traction electric locomotives during unsteady operating modes by analyzing the nature and causes of an emergency increase in the armature current of the NB–520V traction motor in traction mode. This study uses comparative analysis of trip file fragments from EP1 series electric locomotives at a locomotive depot. Methods. A review was conducted on innovative methods for studying the unsteady operating modes of traction electric motors in locomotives. These methods help determine the causes of emergency armature

APA, Harvard, Vancouver, ISO, and other styles

50

Li, Gen, Tao Shu, Hanchao Zheng, Chenjie Lin, Pengxiang Zhang, and Yingying Wang. "Research on Material Selection and Electromagnetic Characteristics of Composite Electromagnetic launcher." Journal of Physics: Conference Series 2450, no. 1 (2023): 012007. http://dx.doi.org/10.1088/1742-6596/2450/1/012007.

Full text

Abstract:

Abstract The armature and rail thermal ablation caused by the current concentration phenomenon will affect the service life of the guideway during the operation of the compound four-rail electromagnetic emitter. With different rail materials simulated and analyzed using the finite element analysis method and the ANSYS software, the composite four-rail electromagnetic launcher’s current density distribution and electromagnetic field distribution were designed to optimize and improve the thermal ablation of the armature and rail of the composite electromagnetic launcher. The results show that th

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!