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

Author: Grafiati

Published: 30 June 2021

Last updated: 15 February 2022

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1

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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3

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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4

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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6

Skiba, Andrzej J. "Simulation of Atmospheric Discharge at Power Line." AUTOMATYKA, ELEKTRYKA, ZAKLOCENIA 11 (September 30, 2020): 8–14. http://dx.doi.org/10.17274/aez.2020.41.01.

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Modelling electrical circuits by application of schemes containing elements with distributed parameters such as transmission lines has been applied in this research. Functions approximating voltage or current atmospheric discharges have been presented together with frequency spectra of these functions. The results of computer simulations obtained with the help of PSpice software have been presented for a simplified three-phase circuit subject to such discharge.

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7

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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8

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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9

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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10

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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11

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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12

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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13

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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14

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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15

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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16

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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17

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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18

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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19

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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20

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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21

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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22

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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23

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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24

Pelletier, Mathew, John Wanjura, Greg Holt, and Paul Funk. "Methods for Protecting a Personal Computer and Data Acquisition Electronics Installed on Mobile Equipment." AgriEngineering 1, no. 1 (2018): 4–16. http://dx.doi.org/10.3390/agriengineering1010002.

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Successful data acquisition on mobile platforms, such as tractors, requires the provision of protection for the sensitive electronics, as these platforms are inherently rife with electrical transients that have sufficient energy to cause damage to unprotected instrumentation. Unfortunately, though there are many protection options for industrial applications (i.e., those installed at 120VAC), off-the-shelf products for mobile protection are extremely limited and, after a survey, were determined to provide insufficient protection. The objective of this study was to identify the requirements for

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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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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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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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28

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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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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30

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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31

Oliveira, Janaína G., Johan Lundin, and Hans Bernhoff. "Power Balance Control in an AC/DC/AC Converter for Regenerative Braking in a Two-Voltage-Level Flywheel-Based Driveline." International Journal of Vehicular Technology 2011 (November 3, 2011): 1–9. http://dx.doi.org/10.1155/2011/934023.

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The integration of a flywheel as a power handling can increase the energy storage capacity and reduce the number of battery charge/discharge cycles. Furthermore, the ability of recovering energy of the vehicle during breaking can increase the system efficiency. The flywheel-based all-electric driveline investigated here has its novelty in the use of a double-wound flywheel motor/generator, which divides the system in two different voltage levels, enhancing the efficiency of the electric driveline. The connection of two AC electrical machines (i.e., the flywheel and the wheel motor) with differ

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32

Alvarez-Diazcomas, Alfredo, Adyr A. Estévez-Bén, Juvenal Rodríguez-Reséndiz, Miguel-Angel Martínez-Prado, and Jorge D. Mendiola-Santíbañez. "A Novel RC-Based Architecture for Cell Equalization in Electric Vehicles." Energies 13, no. 9 (2020): 2349. http://dx.doi.org/10.3390/en13092349.

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Nowadays, research on electric vehicles is increasing because they have the potential to decrease greenhouse-gas emissions dramatically in the transport sector. For these types of vehicles, the battery is one of the main components. The traction system needs a cell series connection to fulfill the energy requirements. Nevertheless, batteries differ from each other due to a normal dispersion in their capacity, internal resistance, and self-discharge rate. This paper presents a novel battery equalizer circuit using an RC-based topology to equalize two adjacent cells of a battery pack. It has the

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Giorgi, Maria Grazia De, Antonio Ficarella, Donato Fontanarosa, Elisa Pescini, and Antonio Suma. "Investigation of the Effects of Plasma Discharges on Methane Decomposition for Combustion Enhancement of a Lean Flame." Energies 13, no. 6 (2020): 1452. http://dx.doi.org/10.3390/en13061452.

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The present work focuses on the impact of dielectric barrier discharge (DBD) plasma actuators (PAs) on non-premixed lifted flame stabilization in a methane CH4-air Bunsen burner. Two coaxial DBD-PA configurations are considered. They are composed of a copper corona, installed on the outer surface of a quartz tube and powered with a high voltage sinusoidal signal, and a grounded needle installed along the burner axis. The two configurations differ in the standoff distance value, which indicates the positioning of the high frequency/high voltage (HV) electrode’s upper edge with respect to the ne

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Lysov, Nikolay, Alexander Temnikov, Leonid Chernensky, et al. "Physical Simulation of the Spectrum of Possible Electromagnetic Effects of Upward Streamer Discharges on Model Elements of Transmission Line Monitoring Systems Using Artificial Thunderstorm Cell." Applied Sciences 11, no. 18 (2021): 8723. http://dx.doi.org/10.3390/app11188723.

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The results of a physical simulation using negatively charged artificial thunderstorm cells to test the spectrum of possible electromagnetic effects of upward streamer discharges on the model elements of transmission line monitoring systems (sensor or antennas) are presented. Rod and elongated model elements with different electric field amplification coefficients are investigated. A generalization is made about the parameters of upward streamer current impulse and its electromagnetic effect on both kinds of model elements. A wavelet analysis of the upward streamer corona current impulse and o

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Martinson, Emil, and Jerker Delsing. "Electric spark discharge as an ultrasonic generator in flow measurement situations." Flow Measurement and Instrumentation 21, no. 3 (2010): 394–401. http://dx.doi.org/10.1016/j.flowmeasinst.2010.04.011.

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Kumar, Ravinder, Ankita Kumar, and Inderdeep Singh. "Electric discharge drilling of micro holes in CFRP laminates." Journal of Materials Processing Technology 259 (September 2018): 150–58. http://dx.doi.org/10.1016/j.jmatprotec.2018.04.031.

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Rashidizadeh-Kermani, Homa, Hamid Najafi, Amjad Anvari-Moghaddam, and Josep Guerrero. "Optimal Decision-Making Strategy of an Electric Vehicle Aggregator in Short-Term Electricity Markets." Energies 11, no. 9 (2018): 2413. http://dx.doi.org/10.3390/en11092413.

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This paper proposes the problem of decision making of an electric vehicle (EV) aggregator in a competitive market in the presence of different uncertain resources. In the proposed model, a bi-level problem is formulated where, in the upper-level, the objective of the aggregator is to maximize its expected profit through its interactions and, in the lower-level, the EV owners minimize their payments. Therefore, the objectives of the upper and the lower-level are contrary. To solve the obtained nonlinear bi-level program, Karush-Kuhn-Tucker (KKT) optimality conditions and strong duality are appl

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Guan, Jen-Chiun, Bo-Chiuan Chen, and Yuh-Yih Wu. "Design of an Adaptive Power Management Strategy for Range Extended Electric Vehicles." Energies 12, no. 9 (2019): 1610. http://dx.doi.org/10.3390/en12091610.

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The cruising distance of the range extended electric vehicle (REEV) can be further extended using a range extender, which consists of an engine and a generator, i.e., a genset. An adaptive power management strategy (PMS) based on the equivalent fuel consumption minimization strategy (ECMS) is proposed for the REEV in this paper. The desired trajectory of the state of charge (SOC) is designed based on the energy-to-distance ratio, which is defined as the difference between the initial SOC and the minimum allowable SOC divided by the remaining travel distance, for discharging the battery. A self

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Liu, Yingpei, Yan Li, Haiping Liang, Jia He, and Hanyang Cui. "Energy Routing Control Strategy for Integrated Microgrids Including Photovoltaic, Battery-Energy Storage and Electric Vehicles." Energies 12, no. 2 (2019): 302. http://dx.doi.org/10.3390/en12020302.

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The Energy Internet is an inevitable trend of the development of electric power system in the future. With the development of microgrids and distributed generation (DG), the structure and operation mode of power systems are gradually changing. Energy routers are considered as key technology equipment for the development of the Energy Internet. This paper mainly studies the control of the LAN-level energy router, and discusses the structure and components of the energy router. For better control of the power transmission of an energy router, the energy routing control strategy for an integrated

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Panchal, Satyam, Krishna Gudlanarva, Manh-Kien Tran, Roydon Fraser, and Michael Fowler. "High Reynold’s Number Turbulent Model for Micro-Channel Cold Plate Using Reverse Engineering Approach for Water-Cooled Battery in Electric Vehicles." Energies 13, no. 7 (2020): 1638. http://dx.doi.org/10.3390/en13071638.

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The investigation and improvement of the cooling process of lithium-ion batteries (LIBs) used in battery electric vehicles (BEVs) and hybrid electric vehicles (HEVs) are required in order to achieve better performance and longer lifespan. In this manuscript, the temperature and velocity profiles of cooling plates used to cool down the large prismatic Graphite/LiFePO4 battery are presented using both laboratory testing and modeling techniques. Computed tomography (CT) scanning was utilized for the cooling plate, Detroit Engineering Products (DEP) MeshWorks 8.0 was used for meshing of the coolin

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Lai, Ching-Ming, Jiashen Teh, Yuan-Chih Lin, and Yitao Liu. "Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage." Energies 13, no. 5 (2020): 1234. http://dx.doi.org/10.3390/en13051234.

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A patented bidirectional power converter was studied as an interface to connect the DC-bus of driving inverter, battery energy storage (BES), and ultracapacitor (UC) to solve the problem that the driving motor damages the battery life during acceleration and deceleration in electric vehicles (EVs). The proposed concept was to adopt a multiport switch to control the power flow and achieve the different operating mode transitions for the better utilization of energy. In addition, in order to improve the conversion efficiency, the proposed converter used a coupled inductor and interleaved-pulse-w

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Baboraik, Abdulrahman, and Alexander Usachev. "New model of explanation for phase angle pattern of online partial discharge measurement in winding insulation of turbine generator." Journal of Electrical Engineering 72, no. 1 (2021): 66–77. http://dx.doi.org/10.2478/jee-2021-0010.

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Abstract On-line partial discharge (PD) measurement in electrical insulation of the turbine generator (TG) is an essential approach to control the quality of insulation and to avoid any undesired shutdowns of TG. Although in the last few decades the number of research in PD on-line monitoring methods in the stator winding of TG has increased significantly, it is still not clear yet why PD only appears at certain phase angles of the AC cycle in the phase resolved partial discharge (PRPD) pattern. Moreover, there is not yet any clarification on how the winding configuration of stator may affect

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Mehta, Dhruvesh, Prasanta Kundu, and Anandita Chowdhury. "Development of energy efficient, cost-optimized transformer with low partial discharges." Modelling, Measurement and Control A 91, no. 2 (2018): 59–65. http://dx.doi.org/10.18280/mmc_a.910205.

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Campagna, Nicola, Vincenzo Castiglia, Rosario Miceli, et al. "Battery Models for Battery Powered Applications: A Comparative Study." Energies 13, no. 16 (2020): 4085. http://dx.doi.org/10.3390/en13164085.

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Battery models have gained great importance in recent years, thanks to the increasingly massive penetration of electric vehicles in the transport market. Accurate battery models are needed to evaluate battery performances and design an efficient battery management system. Different modeling approaches are available in literature, each one with its own advantages and disadvantages. In general, more complex models give accurate results, at the cost of higher computational efforts and time-consuming and costly laboratory testing for parametrization. For these reasons, for early stage evaluation a

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Chen, S. L., and Q. C. Hsu. "Studies on electric-discharge machining of non-contact seal face grooves." Journal of Materials Processing Technology 140, no. 1-3 (2003): 363–67. http://dx.doi.org/10.1016/s0924-0136(03)00761-1.

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Zeng, Miaomiao, Peng Zhang, Yang Yang, Changjun Xie, and Ying Shi. "SOC and SOH Joint Estimation of the Power Batteries Based on Fuzzy Unscented Kalman Filtering Algorithm." Energies 12, no. 16 (2019): 3122. http://dx.doi.org/10.3390/en12163122.

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In order to improve the convergence time and stabilization accuracy of the real-time state estimation of the power batteries for electric vehicles, a fuzzy unscented Kalman filtering algorithm (F-UKF) of a new type is proposed in this paper, with an improved second-order resistor-capacitor (RC) equivalent circuit model established and an online parameter identification used by Bayes. Ohmic resistance is treated as a battery state of health (SOH) characteristic parameter, F-UKF algorithms are used for the joint estimation of battery state of charge (SOC) and SOH. The experimental data obtained

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Rubtsov, N. M., G. I. Tzvetkov, and V. I. Chernysh. "The effect of the electric field on the kinetics of dichlorosilane oxidation in the absence of discharge." Kinetics and Catalysis 41, no. 3 (2000): 307–12. http://dx.doi.org/10.1007/bf02755366.

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Matsugi, K., Y. Wang, T. Hatayama, O. Yanagisawa, and K. Syakagohri. "Application of electric discharge process in joining aluminum and stainless steel sheets." Journal of Materials Processing Technology 135, no. 1 (2003): 75–82. http://dx.doi.org/10.1016/s0924-0136(02)01040-3.

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Kumar, Ravinder, and Inderdeep Singh. "A modified electrode design for improving process performance of electric discharge drilling." Journal of Materials Processing Technology 264 (February 2019): 211–19. http://dx.doi.org/10.1016/j.jmatprotec.2018.09.014.

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Wang, Tingzhang, Chunya Wu, Henan Liu, Mingjun Chen, Jian Cheng, and Su Dingning. "On-machine electric discharge truing of small ball-end fine diamond grinding wheels." Journal of Materials Processing Technology 277 (March 2020): 116472. http://dx.doi.org/10.1016/j.jmatprotec.2019.116472.

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