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Journal articles on the topic 'Electric discharges – Computer simulation'

Author: Grafiati

Published: 30 June 2021

Last updated: 29 July 2025

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1

Boiko, M. I., and K. S. Tatkova. "Computer simulation of operation plant effective modes for water disinfection by electrical discharges in gas bubbles." Electrical Engineering & Electromechanics, no. 1 (January 1, 2024): 43–50. http://dx.doi.org/10.20998/2074-272x.2024.1.06.

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Purpose. Determination by means of computer simulation of the most efficient modes of operation of the installation for water disinfection using discharges in gas bubbles, in which (modes) the amplitude of voltage pulses at the processing unit and on the layer of treated water is not less than the voltage amplitude immediately after the switching discharger. Methodology. To achieve this goal, we used computer simulation using Micro-Cap 10. We used two different electrical circuits that simulate the operation of the experimental setup in two different modes: in a mode with a restoring electrica

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2

Boiko, M. I., and K. S. Tatkova. "Computer simulation of operation plant effective modes for water disinfection by electrical discharges in gas bubbles." Electrical Engineering and Electromechanics 2024, no. 1 (2024): 43–50. https://doi.org/10.20998/2074-272X.2024.1.06.

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<strong><em>Purpose.</em></strong><em> Determination by means of computer simulation of the most efficient modes of operation of the installation for water disinfection using discharges in gas bubbles, in which (modes) the amplitude of voltage pulses at the processing unit and on the layer of treated water is not less than the voltage amplitude immediately after the switching discharger. <strong>Methodology.</strong> To achieve this goal, we used computer simulation using Micro-Cap 10. We used two different electrical circuits that simulate the operation of the experimental setu

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SETTAOUTI, A., and L. SETTAOUTI. "NUMERICAL SIMULATION OF THE FORMATION AND PROPAGATION OF STREAMER." International Journal of Modern Physics C 18, no. 06 (2007): 957–71. http://dx.doi.org/10.1142/s0129183107011066.

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There has been considerable interest in non-thermal discharges over the past decade due to the increased number of industrial applications. The properties of discharges in electronegative gases are most frequently used for technological applications. For the improvement of performance in these applications, it is necessary to understand discharge dynamics experimentally and numerically. In this paper, a Monte Carlo simulation is carried out in sulfur hexafluoride (SF6) in uniform electric fields. The streamer propagation, electron, positive and negative ion distributions and space charge field

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Pu, Ziheng, Chenqu Zhou, Yuyao Xiong, et al. "Two Dimensional Axisymmetric Simulation Analysis of Vegetation Combustion Particles Movement in Flame Gap under DC Voltage." Energies 12, no. 19 (2019): 3596. http://dx.doi.org/10.3390/en12193596.

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In recent years, extreme high temperature weather occurs frequently, which easily causes forest fires. The forest fire is prone to the trip accident of the transmission line. Previous studies show that charged combustion particles cause electric field distortion in the gap below the transmission line, and trigger discharges near the conductor area. The motion and distribution characteristics of combustion particles in the gap have an important influence on the discharge characteristics. Therefore, the size and morphology of combustion particles are analyzed through combustion experiments with

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Rodríguez-Serna, Johnatan M., Ricardo Albarracín-Sánchez, Ming Dong, and Ming Ren. "Computer Simulation of Partial Discharges in Voids inside Epoxy Resins Using Three-Capacitance and Analytical Models." Polymers 12, no. 1 (2020): 77. http://dx.doi.org/10.3390/polym12010077.

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Epoxy resin is one of the most common polymers used as part of the insulation system in key electrical assets such as power transformers and hydrogenerators. Thus, it is necessary to know their main characteristics and to evaluate their condition when subjected to High Voltage (HV). A brief review of epoxy resins’ applications as insulating materials is made, their main characteristics as insulating media are given, the improvements with nano-fillers are summarized and the main electric properties required for Partial Discharges (PD) modelling are listed. In addition, the theoretical backgroun

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Rocha, Gabriel Vianna Soares, Raphael Pablo de Souza Barradas, João Rodrigo Silva Muniz, et al. "Optimized Surge Arrester Allocation Based on Genetic Algorithm and ATP Simulation in Electric Distribution Systems." Energies 12, no. 21 (2019): 4110. http://dx.doi.org/10.3390/en12214110.

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The efficient protection of electric power distribution networks against lightning discharges is a crucial problem for distribution electric utilities. To solve this problem, the great challenge is to find a solution for the installation of surge arresters at specific points in the electrical grid and in a sufficient quantity that can ensure an adequate level of equipment protection and be within the utility’s budget. As a solution to this problem of using ATP (Alternative Transient Program), this paper presents a methodology for optimized surge arrester allocation based on genetic algorithm (

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Barradas, Raphael Pablo de Souza, Gabriel Vianna Soares Rocha, João Rodrigo Silva Muniz, Ubiratan Holanda Bezerra, Marcus Vinícius Alves Nunes, and Jucileno Silva e. Silva. "Methodology for Analysis of Electric Distribution Network Criticality Due to Direct Lightning Discharges." Energies 13, no. 7 (2020): 1580. http://dx.doi.org/10.3390/en13071580.

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Direct lightning discharges in overhead distribution networks invariably cause serious insulation damage, frequently leading to the electric system’s partial or total shutdown. Installing lightning arresters can be very effective, and it is commonly used to minimize this problem; however, considering that typically, electric distribution grids exhibit a very large number of electrical nodes, the massive use of lightning arresters may not be economically viable. In this way, this article proposes a methodology for allocating lightning arresters that can significantly reduce the number of lightn

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Thabet, Ahmed, and Mohamed Fouad. "Experimental and simulation analysis for insulation deterioration and partial discharge currents in nanocomposites of power cables." International Journal of Electrical and Computer Engineering (IJECE) 14, no. 2 (2024): 1194. http://dx.doi.org/10.11591/ijece.v14i2.pp1194-1202.

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Partial discharge (PD) has a well-established relationship with the lifespan of power cables. This paper has been treated the polyvinyl chloride (PVC) with specified nanoparticles for enhancing dielectric degradation and reducing partial discharge current to extending lifespan of power cables. It has been succeeded to creation new polyvinyl chloride nanocomposites that have been synthesized experimentally via using solution-gel (SOL-GEL) technique and have high featured electric and dielectric properties. The validation of nanoparticles penetration inside polyvinyl chloride during synthesis pr

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Ahmed, Rizwan, Rahisham Abd Rahman, Arshad Jamal, et al. "Field-Dependent Pollution Model under Polluted Environments for Outdoor Polymeric Insulators." Polymers 14, no. 3 (2022): 516. http://dx.doi.org/10.3390/polym14030516.

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In-depth understanding of the pollution problems such as dry bands and the polymeric aging process requires better determination of electric field strength and its distribution over the polymeric surface. To determine the electric field distribution over the insulator surface, this research proposes utilizing a novel approach model based on nonlinear electrical characteristics derived from experimental results for polluted polymer insulators. A case study was carried out for a typical 11 kV polymeric insulator to underline the merits of this new modeling approach. The developments of the propo

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10

He, Miao, Miao Hao, George Chen, et al. "Numerical modelling on partial discharge in HVDC XLPE cable." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 2 (2018): 986–99. http://dx.doi.org/10.1108/compel-07-2017-0297.

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PurposeHigh voltage direct current (HVDC) cable is an important part in the electric power transmission and distribution systems. However, very little research has been carried out on partial discharge under direct current (DC) conditions. Niemeyer’s model has been widely used under alternating current (AC) conditions. This paper aims to intend to modify the Niemeyer’s model considering both electric field and charge dynamics under DC conditions, and therefore proposes a numerical model describing partial discharge characteristics in HVDC cable. Design/methodology/approachThis paper intends to

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11

Jayasinghe, Hasupama, Liliana Arevalo, Richard Morrow, and Vernon Cooray. "Modeling Streamer Discharge in Air Using Implicit and Explicit Finite Difference Methods with Flux Correction." Plasma 8, no. 2 (2025): 21. https://doi.org/10.3390/plasma8020021.

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Implementing a computationally efficient numerical model for a single streamer discharge is essential to understand the complex processes such as lightning initiation and electrical discharges in high voltage systems. In this paper, we present a streamer discharge simulation in air, by solving one-dimensional (1D) drift diffusion reaction (DDR) equations for charged species with the disc approximation for electric field. A recently developed fourth-order space and time-centered implicit finite difference method (FDM) with a flux-corrected transport (FCT) method is applied to solve the DDR equa

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Andrade, Arthur F., Edson G. Costa, Filipe L. M. Andrade, Clarice S. H. Soares, and George R. S. Lira. "Design of Cable Termination for AC Breakdown Voltage Tests." Energies 12, no. 16 (2019): 3075. http://dx.doi.org/10.3390/en12163075.

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International standards prescribe overvoltage tests to evaluate the insulating material performance of high-voltage cables. However, it is difficult to manage the electric fields at the cable ends when laboratory measurements are carried out because surface and external discharges occur at the cable termination. Therefore, this paper presents a procedure for designing cable terminations to reduce the electric field at the cable ends to appropriate levels even in the case of overvoltage tests. For this purpose, computer simulations of electric field distribution using the finite element method

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Bobkov, S. P., I. A. Astrakhantseva, V. P. Zhukov, and E. S. Bobkova. "Simulation modeling of ozone generator." Vestnik IGEU, no. 6 (December 28, 2024): 81–90. https://doi.org/10.17588/2072-2672.2024.6.081-090.

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Industrial combustion of fuel leads to pollution of the environment with flue gases containing oxides of sulfur, carbon, and nitrogen, which belong to toxic substances. One of the methods of neutralizing exhaust gases is their chemical purification using ozone, which allows accelerating the oxidation reactions of oxides to easily recyclable compounds. One of the industrial methods to obtain ozone is its generation (synthesis) from oxygen-containing mixtures in installations in which high-voltage electrical discharges are used. In this regard, improving the methods of calculation and design of

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Gardan, Giovanni, and Gian Carlo Montanari. "Partial Discharge Inception Modelling of Insulating Materials and Systems: Contribution of Electrodes to Electric Field Profile Calculation." Applied Sciences 14, no. 1 (2023): 201. http://dx.doi.org/10.3390/app14010201.

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Partial discharge inception modeling is a powerful tool for material investigation and insulation system design in order to achieve the objective of PD-free operation of insulation systems. Model validation, however, requires accurate and repeatable testing conditions, and the aim of this paper is to look at the influence of electrodes and electric field simulation on partial discharge inception model prediction accuracy. Awareness of the geometric electrode configuration is important to forecast both the typology of discharge and the corresponding partial discharge inception voltage value. It

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15

Fujiwara, T., T. Shimada, and K. Sugita. "Computer simulation of discharge development under an induced toroidal electric field." Journal of Physics D: Applied Physics 18, no. 6 (1985): 1101–11. http://dx.doi.org/10.1088/0022-3727/18/6/013.

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16

Kholmov, M. A., and D. A. Polyakov. "PARTIAL DISCHARGE PULSE SIMULATION IN THE POWER CABLE GROUNDING CIRCUIT." Dynamics of Systems, Mechanisms and Machines 10, no. 1 (2022): 83–88. http://dx.doi.org/10.25206/2310-9793-2022-10-1-83-88.

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The paper describes the modeling of a partial discharge (PD) pulse in the grounding circuit of power cables in order to evaluate the effectiveness of using a low-resistance resistive element for registering par-tial discharges. Three possible options for constructing the model are considered. The first is based on the classical method for calculating transients. A system of differential equations was compiled, corresponding to the compiled scheme for the occurrence of PD impulses. The system was then solved using the Matlab software package. The Simscape Electrical module built into Matlab/Sim

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Suwanasri, Cattareeya, Thanapong Suwanasri, and Phanupong Fuangpian. "Investigation on Partial Discharge of Power Cable Termination Defects using High Frequency Current Transformer." ECTI Transactions on Electrical Engineering, Electronics, and Communications 12, no. 1 (2013): 16–23. http://dx.doi.org/10.37936/ecti-eec.2014121.170810.

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This paper presents partial discharge (PD) investigation of different cable termination defects. The medium voltage power cables as rated of 3.6/6(7.2) kV are applied. Finite Element Method Magnetic (FEMM) program is used as a simulation tool for electric field stress investigation. The partial discharges patterns are detected by using a commercial High Frequency Current Transformer (HFCT). The simple cases for internal, surface and corona discharge are firstly observed in order to investigate the performance of the HFCT. Then eight different case studies of cable termination defects are furth

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18

Beura, Chandra Prakash, Jorim Wolters, and Stefan Tenbohlen. "Application of Pathfinding Algorithms in Partial Discharge Localization in Power Transformers." Sensors 24, no. 2 (2024): 685. http://dx.doi.org/10.3390/s24020685.

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The introduction of artificial intelligence (AI) to ultra-high-frequency (UHF) partial discharge (PD) monitoring systems in power transformers for the localization of PD sources can help create a robust and reliable system with high usability and precision. However, training the AI with experimental data or data from electromagnetic simulation is costly and time-consuming. Furthermore, electromagnetic simulations often calculate more data than needed, whereas, for localization, the signal time-of-flight information is the most important. A tailored pathfinding algorithm can bypass the time-con

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19

Wan, Yi Peng, and Wei Yao. "Development of Battery Test System for Electric Vehicle." Applied Mechanics and Materials 333-335 (July 2013): 1699–703. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.1699.

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In order to satisfy the test demand of Electric Vehicle batteries, after the analysis of the existing battery test systems, aiming at the problems of them, an EV battery test platform with high degree of simulation is designed, based on the upper and lower computer structure. The PC software is compiled, which could control the battery to discharge with constant current or constant power, or to simulate the real road status, by the communication with the lower computer through CAN bus and 485 bus. The corresponding control method to realize the discharging test with constant current is designe

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20

He, He, and Cui. "Charge-Simulation-Based Electric Field Analysis and Electrical Tree Propagation Model with Defects in 10 kV XLPE Cable Joint." Energies 12, no. 23 (2019): 4519. http://dx.doi.org/10.3390/en12234519.

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The most severe partial discharges and main insulation failures of 10 kV cross-linked polyethylene cables occur at the joint due to defects caused by various factors during the manufacturing and installation processes. The electric field distortion is analyzed as the indicator by the charge simulation method to identify four typical defects (air void, water film, metal debris, and metal needle). This charge simulation method is combined with random walk theory to describe the stochastic process of electrical tree growth around the defects with an analysis of the charge accumulation process. Th

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21

Li, Zhang, Wu, Cheng, and Du. "Particle Simulation Model for Self-Field Magnetoplasmadynamic Thruster." Energies 12, no. 8 (2019): 1579. http://dx.doi.org/10.3390/en12081579.

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In order to clarify the discharge principle of the self-field magnetoplasmadynamic thruster (MPDT), a two-dimensional axisymmetric particle-in-cell/Monte Carlo collision (PIC/MCC) model is proposed. The spatial distribution and the collision characteristics of discharge plasma were calculated using this model. In addition, the influence of the operation parameters on the plasma was analyzed including the voltage and mass flow rate. The effectiveness of the model was verified by comparison to the experimentally induced magnetic field. It was found that the electrons were mainly accelerated by t

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Guo, Z. N., T. M. Yue, T. C. Lee, and W. S. Lau. "Computer simulation and characteristic analysis of electrode fluctuation in wire electric discharge machining." Journal of Materials Processing Technology 142, no. 2 (2003): 576–81. http://dx.doi.org/10.1016/s0924-0136(03)00662-9.

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23

Jawad, Mohammed H., and Zahraa T. Turki. "Diagnosis of DC Glow Discharge Plasma of Krypton Gas Under Different Pressures." International Academic Journal of Science and Engineering 11, no. 1 (2024): 98–106. http://dx.doi.org/10.9756/iajse/v11i1/iajse1113.

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In this study, we looked at how various pressure levels affected the plasma produced by the krypton gas blazing electric discharge. Various pressure readings between 0.6 and 1.4 Torr were employed. At 300 K in temperature a three-dimensional computer simulation based on the krypton plasma finite element approach was executed. By acquiring the plasma parameters (electron density, electric potential, and electron temperature), we were able to obtain a higher density plasma based on our findings.

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Liu, Yunpeng, Shuo Jiang, Zheng Zhong, Jianghai Geng, and Fangcheng Lv. "Alternating Current Discharge Characteristics and Simulation Analysis of Rod-Plane Short Air Gaps under Salt Fog Conditions." Energies 11, no. 9 (2018): 2251. http://dx.doi.org/10.3390/en11092251.

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In this paper, smog meteorological conditions in the natural environment is simulated by the salt fog method. The study of the alternating current (AC) discharge characteristics of rod-plane short air gaps in salt fog environments has important guiding significance for how to strengthen the external insulation strength of ultra-high voltage (UHV) transmission lines and electrical equipment in smog environments. The rod-plane short air gap is selected as the model to simulate the extremely uneven electric field. The AC discharge test is carried out in the salt fog environment with different con

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Petri, Lucas de Paula Santos, Emanuel Antonio Moutinho, Rondinele Pinheiro Silva, et al. "A Portable System for the Evaluation of the Degree of Pollution of Transmission Line Insulators." Energies 13, no. 24 (2020): 6625. http://dx.doi.org/10.3390/en13246625.

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Surface pollution is a major cause of partial discharges in high voltage insulators in coastal cities, leading to degradation of their surface and accelerating their aging process, which may cause visible arcing, flashovers and system faults. Thus, this work provides a methodology for the assessment of the condition of insulators based on an instrument which generates a severity degree to help the electric utility team schedule maintenance routines for the structures that really need it. The instrument uses a Raspberry Pi board as the processing core, a PicoScope oscilloscope for the data acqu

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Yu, Kaijiang, Xiaozhuo Xu, Qing Liang, et al. "Model Predictive Control for Connected Hybrid Electric Vehicles." Mathematical Problems in Engineering 2015 (2015): 1–15. http://dx.doi.org/10.1155/2015/318025.

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This paper presents a new model predictive control system for connected hybrid electric vehicles to improve fuel economy. The new features of this study are as follows. First, the battery charge and discharge profile and the driving velocity profile are simultaneously optimized. One is energy management for HEV forPbatt; the other is for the energy consumption minimizing problem of acc control of two vehicles. Second, a system for connected hybrid electric vehicles has been developed considering varying drag coefficients and the road gradients. Third, the fuel model of a typical hybrid electri

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Florkowski, Marek, Barbara Florkowska, and Pawel Zydron. "Partial Discharges in Insulating Systems of Low Voltage Electric Motors Fed by Power Electronics—Twisted-Pair Samples Evaluation." Energies 12, no. 5 (2019): 768. http://dx.doi.org/10.3390/en12050768.

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Power electronics switching devices currently represent the dominant technology for supplying low voltage (LV) electric motors. The fast switching processes exert a different class of stress on dielectric insulating materials than standard sinusoidal excitations. Such stresses result in an increase in the dynamic activity of the working electric field, which in turn lead to an increased likelihood of partial discharges (PD). The stator design of low voltage motor is often in form of random-wound windings, where the magnet wires (copper or aluminum round wires coated with thin layer of insulati

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28

Wan, Yi Peng, and Wei Yao. "Study on Mechanical Automation with Improvement of Battery Test System for Electric Vehicle." Advanced Materials Research 738 (August 2013): 287–91. http://dx.doi.org/10.4028/www.scientific.net/amr.738.287.

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Aiming at the problems of the existing battery test system, a EV battery test platform with high degree of simulation is designed, based on the upper and lower computer structure after a lot of analysis. The PC software is also compiled, which could simulate the real road status, or to control the battery to discharge with constant current or constant power, by the communication with the lower computer through 485 bus and CAN bus. The corresponding control method to realize the discharging test with constant current is designed, also an interface to Excel which can read the configure informati

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Li, Jinsong, Hua Yu, Min Jiang, Hong Liu, and Guanliang Li. "Numerical Modeling of Space–Time Characteristics of Plasma Initialization in a Secondary Arc." Energies 12, no. 11 (2019): 2128. http://dx.doi.org/10.3390/en12112128.

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A numerical model based on the finite element simulation software COMSOL was developed to investigate the secondary arc that can limit the success of single-phase auto-reclosure solutions to the single-phase-to-ground fault. Partial differential equations accounting for variation of densities of charge particles (electrons, positive and negative ions) were coupled with Poisson’s equation to consider the effects of space and surface charges on the electric field. An experiment platform was established to verify the numerical model. The brightness distribution of the experimental short-circuit a

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Blanch-Fortuna, Alexandra, David Zambrano-Prada, Martín Gállego-Casals, and Luis Martinez-Salamero. "Simulation of an Ultrafast Charging Station Operating in Steady State." Electronics 12, no. 23 (2023): 4811. http://dx.doi.org/10.3390/electronics12234811.

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This report presents the analysis, study, and simulation of an ultrafast charging station (UFCS) for electric vehicles (EVs) operating in steady state. The electrical architecture of the charging station uses an ac bus plus two dc buses and it is supported by a storage system based on batteries and super-capacitors. The power demand of the EVs is established taking into account the electric characteristics of their batteries and the availability of the station charging points. The analysis introduces a supervisory control based on a state machine description for different operating modes, whic

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31

Vvedenskii, Nikolay, Vladimir Gildenburg, and Andrei Solodov. "Sharpening self-similar structures in the law-pressure high-frequency discharge." Izvestiya VUZ. Applied Nonlinear Dynamics 8, no. 1 (2000): 3–14. http://dx.doi.org/10.18500/0869-6632-2000-8-1-3-14.

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The nonlinear dynamics of the cylindrically symmetric high—frequency discharge produced by а circular polarized electric field is considered. Three main stages of discharge evolution are analyzed by computer simulation. These stages are е following: (i) self—acceleratlng avalanche—like process which develops up to plasma density maximum corresponding to «geometric» resonance of the plasma cylinder; (ii) diffusion propagation of the fast ionization wave which contains the plasma resonance region at its leading edge; (iii) transition to the steady—state. The sharpening regimes for the field ampl

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32

Yang, Fan, Yuchen Zhang, Xingwang Wu, and Jie Wu. "Study on the Partial Surface Discharge Process of Oil-Paper Insulated Transformer Bushing with Defective Condenser Layer." Applied Sciences 13, no. 13 (2023): 7621. http://dx.doi.org/10.3390/app13137621.

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Oil-impregnated paper condenser transformer bushings are an important part of transformer equipment, and partial discharge (PD) occurred when defects exist on the condenser aluminum foil layers. Firstly, to study the PD process of the oil-paper insulated capacitance graded bushing with the defect of broken aluminum foil, a defective oil-paper bushing discharge sample is constructed to study the PD parameters and capacitance, and to discharge carbonization traces at different voltage levels. Then, in order to verify the process of condenser aluminum foil layer discharge and the space charge var

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Wang, Xucheng, Shuhan Gao, and Yuantao Zhang. "Influence of Gap Width on Temporal Nonlinear Behaviors in CO2 Dielectric Barrier Discharges under Martian Conditions." Applied Sciences 12, no. 21 (2022): 10990. http://dx.doi.org/10.3390/app122110990.

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In recent years, the in situ resource utilization of CO2 on Mars for oxygen and carbon monoxide production has attracted increasing attention. Dielectric barrier discharges (DBDs) have great potential for large-scale industrial application of CO2 decomposition, and the nonlinear behaviors of DBDs are directly related to the discharge stability. In this paper, a fluid model is built to investigate the influence of gap width on temporal nonlinear behaviors in CO2 DBDs driven by tailored voltages under Martian conditions (the pressure and temperature are 4.5 Torr and 210 K, respectively). The sim

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Chen, R., Z. N. Guo, J. W. Liu, T. M. Yue, and S. W. Chen. "A numerical model and computer simulation for machining particle reinforced metal matrix composites in electric discharge machining." Materials Research Innovations 19, sup1 (2015): S1–392—S1–396. http://dx.doi.org/10.1179/1432891715z.0000000001577.

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Chankuson, Pitchasak, Paramee Chumsri, and Apinun Plodkaew. "The Simulation of Dielectric Barrier Discharge for Breakdown Voltage in Starch Modification." Applied Sciences 13, no. 22 (2023): 12143. http://dx.doi.org/10.3390/app132212143.

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This paper presents the simulation results for dielectric barrier discharge (DBD) at atmospheric pressure in argon gas for different relative permittivity, granule shape, thickness layer, and granule diameter measurements for starch on the breakdown voltage. DBD is commonly utilized to generate cold plasma for starch modification. The electric field was computed using COMSOL Multiphysics 5.3a software. The breakdown voltage was calculated employing Paschen’s law for this electric field. The voltage was found according to the breakdown criterion for gap distance 0.2–1.0 cm, and then the Paschen

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SETTAOUTI, A., and L. SETTAOUTI. "MONTE CARLO SIMULATION OF POSITIVE CORONA DISCHARGE IN NITROGEN." International Journal of Modern Physics C 21, no. 07 (2010): 943–54. http://dx.doi.org/10.1142/s0129183110015609.

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The corona discharge commonly occurs in many engineering devices and processes. Their application is still largely based on empirical knowledge; accordingly it is very important to predict the physical properties of corona discharge by the appropriate numerical method. To control corona discharge properly by understanding of corona discharge properties at different discharge stages, time-varying characteristics of discharge which are resulted from electron collision with the gas molecules should be investigated. A numerical study of a corona discharge in nitrogen in a point to plane geometry i

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Wang, Yulong, Xiaohong Zhang, Lili Li, Jinyang Du, and Junguo Gao. "Design of Partial Discharge Test Environment for Oil-Filled Submarine Cable Terminals and Ultrasonic Monitoring." Energies 12, no. 24 (2019): 4774. http://dx.doi.org/10.3390/en12244774.

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Based on the principle of operating an oil-filled-cable operation and the explanation of the oil-filling process provided in the cable operation and maintenance manual of submarine cables, this study investigated oil-pressure variation caused by gas generated as a result of cable faults. First, a set of oil-filled cables and their terminal oil-filled simulation system were designed in the laboratory, and a typical oil-filled-cable fault model was established according to the common faults of oil-filled cables observed in practice. Thereafter, ultrasonic signals of partial discharge (PD) under

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Barkhordari, Ali, Saeed Karimian, Antonio Rodero, Dorota Anna Krawczyk, Seyed Iman Mirzaei, and Amir Falahat. "Carbon Dioxide Decomposition by a Parallel-Plate Plasma Reactor: Experiments and 2-D Modelling." Applied Sciences 11, no. 21 (2021): 10047. http://dx.doi.org/10.3390/app112110047.

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The applicability of high voltage electrical discharges for the decomposition of CO2 has been extensively demonstrated. In this study, a new AC parallel-plate plasma reactor is presented which was designed for this purpose. Detailed experimental characterization and simulation of this reactor were performed. Gas chromatography of the exhaust gases enabled calculation of the CO2 conversion and energy efficiency. A conversion factor approximating 25% was obtained which is higher in comparison to existing plasma sources. Optical emission spectroscopy enabled the determination of the emission inte

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Zhou, Quan, Mingqian Wen, Taotao Xiong, et al. "Study on Insulation Breakdown Characteristics of Printed Circuit Board under Continuous Square Impulse Voltage." Energies 11, no. 11 (2018): 2908. http://dx.doi.org/10.3390/en11112908.

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The widely distributed interconnects in printed circuit boards (PCBs) easily couple with high voltage under the action of electromagnetic pulses, which leads to insulation failure. In this study, the dielectric breakdown characteristics of four typical PCBs are studied under continuous square impulse voltage conditions. First, the electric field distribution in the four electrode models is simulated with the ANSYS software (ANSYS Maxwell 17.0). Electric field simulation results show the weak area of electric field distribution. On this basis, the possible breakdown patterns of PCB are analyzed

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Krok, Roman. "Influence of work environment on thermal state of electric mine motors." Archives of Electrical Engineering 60, no. 3 (2011): 357–70. http://dx.doi.org/10.2478/v10171-011-0031-6.

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Influence of work environment on thermal state of electric mine motors The paper presents a model for calculations of the temperature field in electric mine motors with a water cooled frame. That model was worked out with use of modified and improved thermal networks developed by the author for determining the temperature distributions in different types of ac machines. Thermal calculations for a selected type of 400 kW mining motor were performed with use of an original computer program. Their results were compared with those obtained from measurements. On the basis of the verified simulation

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Qu, Lu, Yu Wang, Gang Liu, et al. "Simulation Study on Positive Corona Discharge of Receptors on Rotating Wind Turbine Blade Tips under Thundercloud Electric Fields." Energies 12, no. 24 (2019): 4696. http://dx.doi.org/10.3390/en12244696.

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Recent lightning simulation experiments have not simulated the influence of blade rotation in the long term after corona inception. This study uses a finite element method and considers the adhesion and collision processes of positive ions, aerosol ions, and neutral particles to establish a two-dimensional positive corona discharge model based on a multicomponent diffusion transport equation. The microscopic distribution of these three types of particles and the influence mechanism of charged particles’ migration under electric fields and wind were studied. The results show that ion migration

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Yang, Shi-Chun, Hong He, Xiao-Yu Yan, et al. "Segmental Track Analysis in Dynamic Wireless Power Transfer." Energies 12, no. 20 (2019): 3875. http://dx.doi.org/10.3390/en12203875.

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Electric vehicles have gained more and more attention because of the serious oil crisis and environmental problems. However, the disadvantages of the electric vehicle, such as short driving range, high battery cost, and inconvenient charging, are hindering its market development and expansion. The realization of on-road wireless power transfer technology can effectively solve the problems of short driving range, prevent the battery from being completely discharged to prolong its service life, and reduce requirement of on-board battery. In this paper, the charging mode and the compensation topo

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Wang, Li, Hui Chen, and Qian Ye. "Simulation analysis and research of cylindrical lithium battery pack automation equipment system." Journal of Physics: Conference Series 2396, no. 1 (2022): 012040. http://dx.doi.org/10.1088/1742-6596/2396/1/012040.

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Abstract The performance difference of the single battery has a significant impact on the cruising range, service life, charge and discharge control of an electric vehicle that uses multiple batteries as the power battery. Highly consistent performance is an essential process for lithium battery production. In order to verify the performance of the lithium battery automatic pack system, this paper used Flexsim software to establish a system simulation model, used the Dashboard data statistical method to analyze the running data of the simulation model, completed the system construction and tes

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Martyushev, Nikita V., Boris V. Malozyomov, Svetlana N. Sorokova, Egor A. Efremenkov, and Mengxu Qi. "Mathematical Modeling of the State of the Battery of Cargo Electric Vehicles." Mathematics 11, no. 3 (2023): 536. http://dx.doi.org/10.3390/math11030536.

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In this paper, a mathematical simulation model of an electric vehicle traction battery has been developed, in which the battery was studied during the dynamic modes of its charge and discharge for heavy electric vehicles in various driving conditions—the conditions of the urban cycle and movement outside the city. The state of a lithium-ion battery is modeled based on operational factors, including changes in battery temperature. The simulation results will be useful for the implementation of real-time systems that take into account the processes of changing the characteristics of traction bat

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Mikeš, Jan, Ivan Soukup, and Stanislav Pekárek. "A 3D Numerical Study of the Surface Dielectric Barrier Discharge Initial Phase." Mathematics 11, no. 4 (2023): 1025. http://dx.doi.org/10.3390/math11041025.

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This study presents the results of the numerical modeling of surface dielectric barrier discharge in planar configuration with the strips active electrode. A positive half-period of the sinusoidal driving voltage and the two-species case is assumed in this study. Currently, many numerical models of surface dielectric barrier discharge deal with different electrode geometries, longer timescales, or discharge energizations. However, the main innovation presented in this study is developing a three-dimensional numerical model for the initial phase of the discharge phenomenon and a deeper focus on

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Kaloko, Bambang Sri. "LEAD ACID BATTERY MODELING FOR ELECTRIC CAR POWER SOURCES." Indonesian Journal of Chemistry 9, no. 3 (2010): 414–19. http://dx.doi.org/10.22146/ijc.21508.

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Successful commercialization of electric vehicles will require a confluence of technology, market, economic, and political factors that transform EVs into an attractive choice for consumers. The characteristics of the traction battery will play a critical role in this transformation. The relationship between battery characteristics such as power, capacity and efficiency, and EV customer satisfaction are discussed based on real world experience. A general problem, however, is that electrical energy can hardly be stored. In general, the storage of electrical energy requires its conversion into a

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Li, Chang He, Zhen Lu Han, Lin Gang Li, and Guo Yu Liu. "Theoretical and Experimental Investigation into the Surface Roughness of Small-Hole EDM." Key Engineering Materials 467-469 (February 2011): 656–61. http://dx.doi.org/10.4028/www.scientific.net/kem.467-469.656.

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The characteristic physical properties of titanium alloy materials of the electrical discharge machining (EDM) small hole is studied theoretically and experimentally. From the theory of EDM, based on the phenomenon of microcosmic surface on EDM small hole, the model of surface roughness is built, and the regulation between roughness and pulse width, peak electric current was analyzed, and the roughness empiric formula is developed by use of dyadic linear regression method. Furthermore, by computer simulation technology with established formula the results are derived for other people to public

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Lu, Zhaona, Junlong Wang, Chuanxing Wang, and Guoqing Li. "Application Error Analysis of SOC Estimation of Pure Electric Vehicles Based on Kalman Signal Big Data Algorithm." Advances in Multimedia 2021 (November 24, 2021): 1–9. http://dx.doi.org/10.1155/2021/4991332.

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The state of charge estimation of a pure electric vehicle power battery pack is one of the important contents of the battery management system. Improving the estimation accuracy of the battery pack’s SOC is conducive to giving full play to its performance and preventing overcharge and discharge of a single battery. At present, the open-circuit voltage ampere-hour integral method is traditionally used to estimate the SOC value of the battery pack; however, this estimation method is not accurate enough to correct the initial value of SOC and cannot solve the problem of current time integration e

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Yan, Xinfeng, Xiaoli Zhou, Ze Li, Yong Qian, and Gehao Sheng. "Surface Discharge Characteristics and Numerical Simulation in C4F7N/CO2 Mixture." Applied Sciences 13, no. 3 (2023): 1409. http://dx.doi.org/10.3390/app13031409.

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The environmentally friendly gas C4F7N has been considered a potential replacement gas for SF6 due to its excellent insulation. At present, research on C4F7N and its mixture mainly focuses on its insulation performance, but few people study its surface discharge mechanism and variation law. In order to study the surface discharge characteristics of the C4F7N/CO2 mixture, a fluid model of surface discharge was established and simulated by COMSOL, which was used to study the mechanism of streamers during surface discharge, fit the expression of the maximum photon flux, analyze the influence of v

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Michalczuk, M., L. M. Grzesiak, and B. Ufnalski. "Hybridization of the lithium energy storage for an urban electric vehicle." Bulletin of the Polish Academy of Sciences: Technical Sciences 61, no. 2 (2013): 325–33. http://dx.doi.org/10.2478/bpasts-2013-0030.

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Abstract This paper discusses benefits of introducing an ultracapacitor (UC) bank into a battery electric vehicle (BEV) powertrain. The case of 12kWh LiFePO4 battery pack is studied quantitatively. Simulation results refer, inter alia, to three main scenarios: fresh cells, half-used battery cells, and half-used ultracapacitors and batteries. Thermal modeling is incorporated into the simulation. Data from real world are considered: various driving cycles recorded using GPS receiver (incl. elevation), discharge curves from battery manufacturer, and UC equivalent series resistance (ESR) variation

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