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Journal articles on the topic 'Electromagnetic compatibility. Electromagnetic interference. Fourier analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Ding, Qiu Qi, Min Tao, and Yun Xiang Jia. "Analysis of Electromagnetic Interference in Rectifier and Inverter System." Applied Mechanics and Materials 536-537 (April 2014): 1547–50. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.1547.

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Aiming at the problem of electromagnetic interference in design and application of electronic rectifier and inverter system, introduces the electromagnetic interference and electromagnetic compatibility characteristics of common circuit, the interference test of rectifier and inverter system, puts forward the products it has produced inhibition method of interference. The test results show that the method can reduce electromagnetic interference system greatly.

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2

Zhang, Hui Juan, Yan Ting Wang, Shi Tao Wang, and Meng Wu. "Prediction Analysis of Electromagnetic Interference Based on Gray Prediction Theory." Applied Mechanics and Materials 44-47 (December 2010): 3731–35. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.3731.

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The paper introduces a new method for prediction of electromagnetic compatibility in the power system, and use the Electromagnetic simulation software ATP. By comparing the actual test results to the simulation results, it is proved that electromagnetic transient simulation is reliable and effective. It also introduces the Gray prediction theory to predict the next Electromagnetic Interference (EMI) of the substation. It is high practical to research and analyze the substation electromagnetic compatibility, and feasible to use the Gray prediction theory with multivariable for the model EMI pre

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Gao, Yang, Bin Zhou, Yi He, and Wan Jing He. "Electromagnetic Compatibility Analysis Method for FBAR Devices." Applied Mechanics and Materials 719-720 (January 2015): 452–60. http://dx.doi.org/10.4028/www.scientific.net/amm.719-720.452.

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With the increasing of resonant frequency and integration of film bulk acoustic resonator (FBAR), the electromagnetic interference (EMI) of FBAR devices appears to be extremely important. The electric fields of the common electrical model and finite element model are assumed to be quasi-static and cannot simulate the electromagnetic (EM) property. A 3-D EM model of FBAR is achieved by means of high frequency EM simulation software HFSS. A real-time simulation of EM distributed effects, EM coupling and piezoelectric effects is achieved by employing an effective permittivity in the EM model. The

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Sun, Guo Qiang, Gang Guo, Yong Bo Yang, Dong Ping Yang, and Jian Feng Zhang. "Analysis of Electromagnetic Compatibility about Air-Power-Off of Aircraft Power System." Advanced Materials Research 503-504 (April 2012): 983–86. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.983.

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At present, main AC power systems of advanced fighters all apply digital controllers with microprocessors. The signal input and output circuits are vulnerable to the effects of electromagnetic interference, which may cause air-power-off fault. The paper analyzes the electromagnetic environment on the aircraft, discusses the airborne electromagnetic compatibility by comparing domestic and international contents and limitations of the electromagnetic standard. Furthermore, it proposes measures to resolve the electromagnetic compatibility

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Zhang, Wei. "An Improved H-Converter Circuit Electromagnetic Interference Analysis." Advanced Materials Research 569 (September 2012): 525–28. http://dx.doi.org/10.4028/www.scientific.net/amr.569.525.

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H-type converter circuit for the power switch on and off the moment will have a great pulse peak, it Will affect the safe use of components and produce large amounts of electromagnetic interference shortcomings，the paper made some changes of the H-type converter circuit. And in Matlab environment for modeling and simulation, changes before and after the two simulation results show that: the pulse peak is effectively suppressed; also inhibit electromagnetic interference, Improved the electromagnetic compatibility of equipment.Simulation and experimental results show that the technique is feasib

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Chi, Yao Dan, Sheng Qian Zhang, Hai Long Gu, and Yu Song Mu. "Car GPS Antenna Electromagnetic Compatibility of the Simulation Study." Applied Mechanics and Materials 457-458 (October 2013): 1144–47. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.1144.

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With the rapid development of the automotive industry,there will be automotive electrical presence of strong electromagnetic interference problems. he functionality of the car electronics electromagnetic interference problem has become increasingly prominent, car antenna by the degree of interference is particularly serious, people are urgently looking for a car antenna to solve electromagnetic immunity, which Anosft HFSS software GPS antenna modeling and simulation designing The GPS antenna field pattern and 3D simulation of electromagnetic fields effect analysis designed to provide a theoret

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7

Xue, Hua, Hai Xia Li, and Yu Fei Wang. "A Numerical Least Squares Analysis of Electromagnetic Compatibility." Applied Mechanics and Materials 672-674 (October 2014): 936–39. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.936.

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Analysis strategies of nonlinear electromagnetic interference have always been a focus in the literature. This paper designs a identification of scattering pattern by using a improved least squares method (LLM) combined with method of moment for mutual coupling among inner elements and interactions with outside scatterers. The novel LLM is applied to optimize the radiation pattern of arbitrary arrays in the operational environment as well as represses the array gain and phase tracking error caused by electromagnetic compatibility based constraints. The algorithm has a simple control structure

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Qin, De Chun, Dong Lin Su, and Nan Kai Wu. "Electromagnetic Susceptibility Analysis Method of Electro-Explosive Devices." Applied Mechanics and Materials 229-231 (November 2012): 949–52. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.949.

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Electro-explosive device (EED) is easily influenced by electromagnetic interference (EMI) in war-field. To study the electromagnetic susceptibility of EED, the method based on full-wave physical modeling and resonance effect simulation is presented. The EMS of non-contact fuse is analyzed as an example. The test data validate the correction of the EMS analysis method, which is of great value for reference to Electromagnetic compatibility (EMC) design of EED.

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Katulski and Namiotko. "Topological Model of an Electromagnetic Environment Inside a Ship for Electromagnetic Compatibility (EMC) Analysis." Applied Sciences 9, no. 20 (2019): 4293. http://dx.doi.org/10.3390/app9204293.

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The mutual electromagnetic (EM) interactions between electrical and electronic devices in a segmented space, such as a ship’s environment, are described. Knowledge of EM interference signal (EM disturbance) distribution is important when setting correct locations for electrical and electronic equipment in a ship’s environment. Firstly, the topological structure of a ship’s segmented internal environment (under the main deck), which consists of many electrical screening walls (shielding planes), is presented. The planes attenuate the EM disturbances. Then, taking into account the ship’s topolog

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Zunoubi, M. R., C. D. Taylor, A. A. Kishk, and H. A. Kalhor. "Electromagnetic modeling of 2D electronic mode-stirred reverberating chambers for electromagnetic compatibility and interference analysis and design." International Journal of RF and Microwave Computer-Aided Engineering 15, no. 2 (2005): 197–202. http://dx.doi.org/10.1002/mmce.20068.

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Wang, Hong You, and Jin Guang Li. "Research on Interference of Electromagnetic Radiation on Micro-Strip Line." Applied Mechanics and Materials 110-116 (October 2011): 971–76. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.971.

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Micro-strip line is a kind of transmission line that is the most widely used in microwave integrated circuit. With the development of microwave integrated circuits and the increasing work frequency of the micro-strip line, a higher requirement for its electromagnetic compatibility has been raised. Finite-Difference Time-Domain (FDTD) method has characteristics of good adaptability in the analysis of electromagnetic compatibility issues and superiority in complexity of the structure modeling. For these reasons, this Article uses FDTD method which is widely used in electromagnetic field calculat

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12

Huang, Chien-Yi, and Ching-Hsiang Chen. "Improve electromagnetic compatibility of electronic products with multivariate parametric design." Microelectronics International 34, no. 1 (2017): 45–55. http://dx.doi.org/10.1108/mi-11-2015-0088.

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Purpose Differing from previous studies trying to solve the electromagnetic compatibility (EMC) issue by addressing single factor, this study aims to combine measures of shielding, filtering and grounding to design parameters with the Taguchi method at the beginning of product design to come up with the optimal parameter combination. Design/methodology/approach EMC-related performance such as radiated emission, conduction interference and electrical fast transient/burst immunity (EFT) are response variables, whereas the printed circuit board and mechanic design-relevant parameters are consider

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Krivobokov, Yevgeny E. "Calculated estimation of electromagnetic compatibility of radio-electronic means of space systems and complexes." Physics of Wave Processes and Radio Systems 24, no. 2 (2021): 49–54. http://dx.doi.org/10.18469/1810-3189.2021.24.2.49-54.

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This article presents the methods of complex computational and analytical assessment of ensuring electromagnetic compatibility of technical means (electrical, electronic and radio-electronic means of launch vehicles and spacecraft). These methods allow us to conduct a comprehensive computational and analytical assessment of the electromagnetic compatibility of the technical means of rocket and space technology, which in its essence allows us to assess the mutual influence of the technical means of rocket and space technology already at the design stage of rocket and space technology objects. T

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14

Gao, Qiang, Jing Jing Du, and Quan Yang Li. "Research on Anti-Interference of Measurement-Control Device in Substation Automation System." Advanced Materials Research 853 (December 2013): 302–5. http://dx.doi.org/10.4028/www.scientific.net/amr.853.302.

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With the wide adoption of relay protection, power grid control and communication equipments in power system based on micro-circuit and micro-processor, the electromagnetic compatibility (EMC) of measurement-control devices has become an urgent and necessary consideration in substation automation system. In this paper, the electromagnetic environment and electromagnetic interference (EMI) problem in substation is presented, and several typical anti-interference methods regarding measurement-control devices are explored based on the analysis of unique characteristics and work environment of this

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15

Wetoszka, Patryk. "Analysis of the elimination of electromagnetic interference in railways security systems." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 12 (2018): 697–700. http://dx.doi.org/10.24136/atest.2018.481.

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The article presents the study of conducted disturbance emission, which was subjected to the alarm control panel on the (+, -) 24V DC power supply ports and the method of elimination of electromagnetic interferences. The measurements were carried out in an accredited testing laboratory on a measurement stand with a standardized configuration of equipment in accordance with the applicable standards in the field of electromagnetic compatibility. During the measurements, exceedances of the limit value at the power terminals were observed. Appropriate steps have been taken to reduce the interferen

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Chi, Yao Dan, Yu Song Mu, Liu Song Yang, and Hai Long Gu. "The Study on the High-Speed Electrified Railway Electromagnetic Interference Impact." Applied Mechanics and Materials 496-500 (January 2014): 1211–14. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.1211.

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With the development of electrified railway, there produced more andmore electromagnetic compatibility problems. It will affect the safety of trainoperation and personnel safety. This paper introduces electromagneticinterference analysis about our electrified railway on the traction powersupply system, the signal equipment, the train structure and the surroundingenvironment in our country.

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17

Mazurek, Paweł. "Chosen Aspects of the Electromagnetic Compatibility of Plasma Reactors with Gliding Arc Discharges." Applied Sciences 10, no. 11 (2020): 3789. http://dx.doi.org/10.3390/app10113789.

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This paper presents an analysis of electromagnetic disturbance interactions inside the three-phase gliding arc plasma generation installation. This is the main part of the electromagnetic compatibility analysis of the reactor installation. All elements of the nonthermal plasma installation are described from the point of view of disturbance generation and their influence on the power supply system. The analysis is based on the results of tests carried out in accordance with the guidelines of the electromagnetic compatibility (EMC) Directive and harmonised standards. The disturbances measured a

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18

Zhang, Zhiwen, and Tao Su. "Behavioral Analysis and Immunity Design of the RO-Based TRNG under Electromagnetic Interference." Electronics 10, no. 11 (2021): 1347. http://dx.doi.org/10.3390/electronics10111347.

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True random-number generators based on ring oscillators (RO-based TRNG) are widely used in the field of information encryption because of their simple structure and compatibility with CMOS technology. However, radiated or conducted electromagnetic interference can dramatically deteriorate the randomness of the output bitstream of the RO-based TRNG, which poses a great threat to security. Traditional research focuses on the innovation of the means of attack and the detection of circuit states. There is a lack of research on the interference mechanism and anti-interference countermeasures. In th

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Lukova-Chuiko, Natali, Volodymyr Nakonechnyi, Volodymyr Saiko, and Serhii Toliupa. "SYNTHESIS OF METHODS OF EVALUATION OF ELECTROMAGNETIC COMPATIBILITY OF RADIO-TECHNICAL SYSTEMS." Information systems and technologies security, no. 1 (1) (2019): 57–65. http://dx.doi.org/10.17721/ists.2019.1.57-65.

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Modern development of radio equipment is characterized by an increase in the speed of processes of transmission and processing of information, miniaturization and integration into unified complexes that physically bridles the sources and receptors of interference. All this leads to the strengthening of the requirements to ensure compliance with the conditions of electromagnetic compatibility and the need for its evaluation at the design stage of radio engineering devices and systems, because the incomplete or incorrect assessment of these requirements leads to a significant increase in time an

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20

Papaika, Yu A., O. G. Lysenko, A. V. Bublikov, and I. G. Olishevskiy. "Problems of electromagnetic compatibility of powerful energy associations during mass connection of renewable energy sources." Electrical Engineering and Power Engineering, no. 1 (March 31, 2021): 34–45. http://dx.doi.org/10.15588/1607-6761-2021-1-4.

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Purpose. Analysis of the problem of energy efficiency and electromagnetic compatibility of powerful energy associations with nonlinear loads and renewable energy sources. Finding promising ways to increase energy efficiency of power supply systems. Methodology. Mathematical modeling of electromagnetic compatibility. Findings. The analysis of the problem of energy efficiency and electromagnetic compatibility of powerful energy associations with nonlinear loads and renewable energy sources allows us to formulate the following provisions that determine the objectives of this study. A promising wa

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21

Lin, Han-Nien, Ya-Ying Chen, Hung-Yun Tsai, and Min-Shan Lin. "Characteristic Analysis and Applications of Electromagnetic Shielding Materials for Wireless Communications Device." Open Materials Science Journal 10, no. 1 (2016): 44–53. http://dx.doi.org/10.2174/1874088x01610010044.

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As the trend of consumer electronics and mobile communications devices is obviously developing toward to miniature and high-speed processing, the problem involving with electromagnetic compatibility (EMC) or radio frequency interference (RFI) is becoming more critical for the system integration of high-speed digital and RF mixed signal platforms. This paper is mainly focusing on the characteristics analysis of various electromagnetic shielding materials by utilizing the various shielding effectiveness (SE) measuring methods developed by TDK and ASTM (ASTM D4935). We also adopt the electromagne

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22

Nedobegkin, M. I., V. A. Sinitsyn, E. A. Sinitsyn, and S. Yu Strakhov. "ENSURING ELECTROMAGNETIC COMPATIBILITY OF RADIONAVIGATION SYSTEMS OF AIRCRAFT AND CELLULAR FACILITIES." Issues of radio electronics, no. 6 (June 21, 2019): 53–59. http://dx.doi.org/10.21778/2218-5453-2019-6-53-59.

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The paper considers the results of the analysis of the causes of unintentional interference to on‑Board and ground equipment of the radio system of near navigation and landing radio beacon landing group, as well as the basic methods and means to ensure the noise immunity of standard equipment on airfields of the Russian Federation. It is noted that the most significant sources of unintended radio interference affecting the operation of on‑Board equipment of radio systems of short‑range navigation of aircraft in its operation with the radio beacons of radio systems of short‑range navigation and

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23

Chen, Dan, Jian Ping Wan, Feng Yuan Yang, Peng Hui Yang, and Yu Jian Qin. "Automatic Control Technique for EMC Analysis Using the Scripting Language of HFSS." Applied Mechanics and Materials 850 (August 2016): 63–70. http://dx.doi.org/10.4028/www.scientific.net/amm.850.63.

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The electromagnetic compatibility (EMC) of the whole system should be guaranteed to ensure the electronic and electrical equipments can work without interference from each other. The article introduces the scripting language of HFSS and details the architecture of automatic control technique for EMC. Finally, the antenna isolation analysis among 3 wire monopole antennas set on an oval carrier was taken as an example to demonstrate the calculation process.

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24

Morava, Jan, and Aleš Richter. "THE CHANGE OF CARDIOSTIMULATION DEVICE PROGRAMMING DUE TO DETECTION OF ELECTROMAGNETIC INTERFERENCE." Lékař a technika - Clinician and Technology 50, no. 2 (2020): 65–68. http://dx.doi.org/10.14311/ctj.2020.2.04.

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The study deals with the interdisciplinary topic of the electromagnetic compatibility of the cardiac implantable electronic devices that are used in patients with a defect of heart conduction system. We are focusing on the detection of disturbing signals on electrodes of cardiostimulation device and its interpretation. The detection of electromagnetic interference (EMI) is related to electrode choice, device placement, its configuration and programming. The aim of the study is the analysis of the pacemaker response in the presence of an external source of the disturbance fields. We point to po

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Li, Zi Hua, Chun Yan Xiao, and Shuai Gao. "Study of Blind Source Separation on Transmission Line EMI." Advanced Materials Research 846-847 (November 2013): 493–99. http://dx.doi.org/10.4028/www.scientific.net/amr.846-847.493.

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The transmission line is an important part of electrical system. Electromagnetic interference (EMI) signals can be picked up by transmission lines in a way of conduction or radiation, and interfere the sensitive devices located in the power source end and the load end, so it is important and necessary to separate and identify the EMI source signals coupling to the transmission lines in order to guide the electromagnetic compatibility (EMC) design and the further EMI diagnosis and suppression. Fast independent component analysis (FastICA) algorithm is studied and programmed, and its feasibility

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Zhang, Zhong, Wei Ming Tong, Feng Ge Li, and Yin Shen Wang. "Filter Design of Anti-Electrical Fast Transient /Burst and Parameter Selection." Applied Mechanics and Materials 143-144 (December 2011): 627–33. http://dx.doi.org/10.4028/www.scientific.net/amm.143-144.627.

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In order to solve the difficulties for the electrical and electronic equipment in passing through the EFT/B test, a filter design method of the anti-EFT/B interference is presented, and the standard of parameter selection is given. The EFT/B interference source transfer function is given, based on the analysis of the EFT/B mechanism, and an equivalent circuit mode is established. An anti-EFT/B interference filter design is presented thorough the spectrum analysis of the EFT/B interference. Experiments show that the designed filter can inhibit the EFT/B interference effectively, and meet the re

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Kharrat, Mouna, Olivia Penas, Nourhen Abdeljabbar Kharrat, et al. "Topological approach for assessment of electromagnetic interferences to support mechatronic conceptual design." Mechanics & Industry 21, no. 6 (2020): 609. http://dx.doi.org/10.1051/meca/2020080.

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The conceptual design is a crucial phase for the System Architects to evaluate 3D architecture concepts of mechatronic systems mainly with regard to the ElectroMagnetic Compatibility (EMC). Our research work deals with the combination of electromagnetic modeling and a topological approach to support the qualitative and quantitative ElectroMagnetic Interferences (EMI) evaluation process within the MBSE SAMOS approach as of the conceptual design. For a given interference, the analysis of topological models allows the qualitative identification of the existence of victims with their associated po

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Chu, James. "Learning about Electromagnetic Compatibility (review of Intersystem EMC Analysis, Interference, and Solutions, Vered, U.; 2018) [book review]." IEEE Microwave Magazine 20, no. 1 (2019): 113–18. http://dx.doi.org/10.1109/mmm.2018.2876818.

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Wang, Weijie, Yannan Liu, Zhenguo Zhao, and Haijing Zhou. "Parallel Multiphysics Simulation of Package Systems Using an Efficient Domain Decomposition Method." Electronics 10, no. 2 (2021): 158. http://dx.doi.org/10.3390/electronics10020158.

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With the continuing downscaling in feature sizes, the thermal impact on material properties and geometrical deformations can no longer be ignored in the analysis of the electromagnetic compatibility or electromagnetic interference of package systems, including System-in-Package and antenna arrays. We present a high-performance numerical simulation program that is intended to perform large-scale multiphysics simulations using the finite element method. An efficient domain decomposition method was developed to accelerate the multiphysics loops of electromagnetic–thermal stress simulations by con

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El Hajji, Moine, Hassane Mahmoudi, and Moussa Labbadi. "The electromagnetic interferance caused by high voltage power lines along the electrical railway equipment." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 5 (2020): 4581. http://dx.doi.org/10.11591/ijece.v10i5.pp4581-4591.

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The identification of risks linked to electromagnetic compatibility (EMC) in the electric railway is a major concern in identifying EMC problems and analyzing the unintentional various external disturbing sources as well as the probability of occurrence of interference, the level of interference along the railway system. The purpose of this analysis is to determine the electromagnetic interaction coupling generated by the high voltage (HV) lines located along the railway line by analyzing the voltage induced in the signaling transmission cables such as the European rail traffic management syst

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Zeng, Xiang-jun, Xu Yang, and Zhao-an Wang Xi'an. "Analysis of Capacitive and Inductive Coupling inside Hybrid Integrated Power Electronic Module." Journal of Microelectronics and Electronic Packaging 1, no. 3 (2004): 169–75. http://dx.doi.org/10.4071/1551-4897-1.3.169.

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Electromagnetic compatibility has to be given enough attention in the design of hybrid Integrated Power Electronic Module (IPEM) due to the sharply decreased distances between power devices and the control/driving circuits as compared to such distances for conventional power electronic equipment built with discrete devices. The high dν/dt, di/dt and high frequency parasitic ringing emanating from the switching circuit can cause serious EMI within the control/driving circuit due to cross-coupling. This paper analyzes the capacitive and inductive cross-coupling problems inside an IPEM. Finite El

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Ma, Feng Ying. "EMI Soft-Sensing and Filter Based on Wavelet Applied in Underground Monitoring System." Advanced Materials Research 503-504 (April 2012): 1360–64. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.1360.

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In order to enhance Electromagnetic Compatibility (EMC) of monitoring system, the EMI distribution should be obtained. But the measurement could not be accomplished perfectly because of underground condition. A novel EMI soft-sensing method was proposed to measure the electromagnetic interference(EMI) indirectly. The wavelet time-frequency analysis was introduced to monitoring system and the EMI source could be ascertained. The startup time, duration and waveform could be detected based on the running records of underground electric equipments. The electrical fast transient/burst (EFT/B), the

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Moreno, Yerai, Gaizka Almandoz, Aritz Egea, Beñat Arribas, and Ander Urdangarin. "Analysis of Permanent Magnet Motors in High Frequency—A Review." Applied Sciences 11, no. 14 (2021): 6334. http://dx.doi.org/10.3390/app11146334.

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Electric drives consume a great amount of the world’s energy, and it will keep increasing due to the electromobility trend. Thus, the efficiency of electric drives must be improved to reach the desired sustainability goal. The Silicon Carbide devices contribute to this objective due to their high working frequency and lower switching losses. However, working at higher frequencies may bring serious Electromagnetic Compatibility (EMC) problems, as well as insulation stress and higher bearing currents. Hence, it is important to have an electrical machine electrical equivalent circuit model to pre

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Yalcin, Turgay, Muammer Ozdemir, Pawel Kostyla, and Zbigniew Leonowicz. "Investigation of Supra-Harmonics through Signal Processing Methods in Smart Grids." Transactions on Environment and Electrical Engineering 2, no. 2 (2017): 80. http://dx.doi.org/10.22149/teee.v2i2.114.

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Nowadays supra-harmonic distortion studies are gaining attention day by day in power quality research area. When handling communication systems especially Power Line Carrier (PLC) systems in frequency range 2- 150 kHz, they are suitable for causing electromagnetic interference (EMI) to other systems. This study shows results of analysis employing advanced method called ensemble empirical mode decomposition (EEMD) to describe supra-harmonic distortion. Unlike the traditional method (short time fourier transform- STFT), EEMD gives extensive representation for supra-harmonic components

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Papaika, Yurii, Oleksandra Lysenko, and Grzegorz Kosobudzki. "Power Quality and Resonances in Power Supply Systems with Non-Sinusoidal Loads." Advanced Engineering Forum 25 (November 2017): 143–50. http://dx.doi.org/10.4028/www.scientific.net/aef.25.143.

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The stress is made on the necessity to take into account the impact of higher while analysing the quality of voltage in power supply systems of coal mine. The process of resonances in power supply systems is explained in terms of physics, the sources generating this kind of interference are described. Mathematical dependences that allow to identify resonances in power supply systems are provided. The focus is placed on the feasibility of using spectral analysis in computations. To investigate the understudied aspects of voltage quality and electromagnetic compatibility and provide mathematical

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Huang, Chao, Yang Zhao, Wei Yan, et al. "Analysis of Crosstalk Problem in Multi-Twisted Bundle of Multi-Twisted Wire Based on BSAS-BP Neural Network Algorithm and Multilayer Transposition Method." Applied Computational Electromagnetics Society 35, no. 8 (2020): 941–50. http://dx.doi.org/10.47037/2020.aces.j.350814.

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Twisted wire used in complex systems has the ability to reduce electromagnetic interference, but crosstalk within the wire is not easy to obtain. This paper proposes a method to predict the crosstalk of multi-twisted bundle of multi-twisted wire (MTB-MTW). A neural network algorithm based on back propagation optimized by the beetle swarm antennae search method (BSAS-BPNN) is introduced to mathematically describe the relationship between the twist angle of the wire harness and the per-unit-length (p.u.l) parameter matrix. Considering the symmetry of the model, the relationship between the unres

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Zhang, Dongmin, Cheng Liao, Ju Feng, Xiaochuan Deng, and Youfeng Cheng. "Modeling of Electromagnetic Wave Coupling to Thin-Wire Structures in Terrain Environments Using Hybrid PE/TPIE Method." International Journal of Antennas and Propagation 2019 (July 4, 2019): 1–10. http://dx.doi.org/10.1155/2019/2839630.

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Analysis of electromagnetic wave coupling to thin-wire structures plays a very important role in electromagnetic compatibility (EMC). In this paper, a hybrid method, which is integrated parabolic equation (PE) and two-potential integral equation (TPIE), is presented to analyze the coupling problems in terrain environments. To model the realistic scenarios, PE based on the split-step Fourier transform (SSFT) technique is applied to solve the three-dimensional field distribution to obtain the external excitations for the wires. According to the boundary conditions, the high-precision TPIE solved

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Kantartzis, N. V., A. I. Dimitriadis, and T. D. Tsiboukis. "Combined FVTD/PSTD Schemes with Enhanced Spectral Accuracy for the Design of Large-Scale EMC Applications." Advanced Electromagnetics 1, no. 3 (2012): 41. http://dx.doi.org/10.7716/aem.v1i3.46.

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A generalized conformal time-domain method with adjustable spectral accuracy is introduced in this paper for the consistent analysis of large-scale electromagnetic compatibility problems. The novel 3-D hybrid schemes blend a stencil-optimized finite-volume time-domain and a multimodal Fourier-Chebyshev pseudo-spectral time-domain algorithm that split the overall space into smaller and flexible areas. A key asset is that both techniques are updated independently and interconnected by robust boundary conditions. Also, combining a family of spatial derivative approximators with controllable preci

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Dikun, Jelena, and Emel Onal. "Coherence and time-frequency analysis of impulse voltage and current measurements." Journal of Energy in Southern Africa 26, no. 2 (2017): 118. http://dx.doi.org/10.17159/2413-3051/2015/v26i2a2207.

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The aim of this paper is to point out the advantages of the use of the time-frequency analysis in the digital processing of waveforms recorded in high voltage impulse tests. Impulse voltage tests are essential to inspect and test insulation integrity of high voltage apparatus. On the other hand, generated impulse currents are used for different test applications such as investigation of high current effects, electromagnetic interference (EMI) testing, etc. Obtained voltage and current waveforms usually have some sort of interferences originated from the different sources. These interferences h

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Ahmad, Ahmad Fahad, Sidek Ab Aziz, Zulkifly Abbas, et al. "Chemically Reduced Graphene Oxide-Reinforced Poly(Lactic Acid)/Poly(Ethylene Glycol) Nanocomposites: Preparation, Characterization, and Applications in Electromagnetic Interference Shielding." Polymers 11, no. 4 (2019): 661. http://dx.doi.org/10.3390/polym11040661.

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In this study, a nanocomposite of reduced graphene oxide (RGO) nanofiller-reinforcement poly(lactic acid) (PLA)/poly(ethylene glycol) (PEG) matrix was prepared via the melt blending method. The flexibility of PLA was improved by blending the polymer with a PEG plasticizer as a second polymer. To enhance the electromagnetic interference shielding properties of the nanocomposite, different RGO wt % were combined with the PLA/PEG blend. Using Fourier-transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FE-SEM) and X-ray diffraction, the structural, microstructure,

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Li, Bing, and Daniel Månsson. "Impact evaluation of conducted UWB transients on loads in power-line networks." Advances in Radio Science 15 (September 21, 2017): 189–98. http://dx.doi.org/10.5194/ars-15-189-2017.

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Abstract. Nowadays, faced with the ever-increasing dependence on diverse electronic devices and systems, the proliferation of potential electromagnetic interference (EMI) becomes a critical threat for reliable operation. A typical issue is the electronics working reliably in power-line networks when exposed to electromagnetic environment. In this paper, we consider a conducted ultra-wideband (UWB) disturbance, as an example of intentional electromagnetic interference (IEMI) source, and perform the impact evaluation at the loads in a network. With the aid of fast Fourier transform (FFT), the UW

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Mordachev, V. I. "FREQUENCY-INDEPENDENT LIMITS OF VALUES OF SYSTEM PARAMETERS OF CELLULAR COMMUNICATIONS AT MULTIPATH PROPAGATION OF RADIO WAVES IN URBAN AREA." Doklady BGUIR, no. 7-8 (December 29, 2019): 117–24. http://dx.doi.org/10.35596/1729-7648-2019-126-8-117-124.

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The analysis was carried out in order to clarify the estimates of the expected restrictions on characteristics of new-generation mobile communications (4G, 5G) under the existing restrictions on radiated power of subscriber radio equipment, as well as in conditions where the boundaries of urban sites are outside of the area of free radio waves propagation (RWP) between subscriber and base stations. Analysis was performed using the basic principles and ensemble models of statistical theory of electromagnetic environment, as well as the basic principles of information theory that determines the

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Monteiro, Catarina S., António V. Rodrigues, Duarte Viveiros, et al. "Optical Fiber Sensors for Structural Monitoring in Power Transformers." Sensors 21, no. 18 (2021): 6127. http://dx.doi.org/10.3390/s21186127.

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Power transformers are central elements of power transmission systems and their deterioration can lead to system failures, causing major disruptions in service. Catastrophic failures can occur, posing major environmental hazards due to fires, explosions, or oil spillage. Early fault detection can be accomplished or estimated using electrical sensors or a chemical analysis of oil or gas samples. Conventional methods are incapable of real-time measurements with a low electrical noise due to time-consuming analyses or susceptibility to electromagnetic interference. Optical fiber sensors, passive

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Zhuang, Shuangyong, Wei Zhao, Qing Wang, Zhe Wang, Lei Chen, and Songling Huang. "A High-Resolution Algorithm for Supraharmonic Analysis Based on Multiple Measurement Vectors and Bayesian Compressive Sensing." Energies 12, no. 13 (2019): 2559. http://dx.doi.org/10.3390/en12132559.

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Supraharmonics emitted by electrical equipment have caused a series of electromagnetic interference in power systems. Conventional supraharmonic analysis algorithms, e.g., discrete Fourier transform (DFT), have a relatively low frequency resolution with a given observation time. Our previous work supplied a significant improvement on the frequency resolution based on multiple measurement vectors and orthogonal matching pursuit (MMV-OMP). In this paper, an improved algorithm for supraharmonic analysis, which employs Bayesian compressive sensing (BCS) for further improving the frequency resoluti

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Poursoltan mohammadi, Amir hossein, M. Chehel Amirani, and Faghihi Faghihi. "Comparison of Shielding Effectiveness in Complex Curved Structure with Different Numerical Methods, FDTD, MOM and Equivalent Circuit." Indonesian Journal of Electrical Engineering and Computer Science 12, no. 3 (2018): 1010. http://dx.doi.org/10.11591/ijeecs.v12.i3.pp1010-1019.

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<p>The study of the effect of shielding on high frequency equipment is very important in the electromagnetic compatibility of control and communication equipment. In this paper, while presenting a curved complex structure for the shielding enclosure, the different number of apertures with different dimensions has been investigated. A rectangular structure with two curved parts behind of the enclosure simulated based on numerical methods, FDTD, MOM and equivalent circuit for better analysis of electromagnetic interference. After introducing the proposed structure and presenting the curvat

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Ahmad, Ahmad Fahad, Sidek Ab Aziz, Suzan Jabbar Obaiys, et al. "Biodegradable Poly (lactic acid)/Poly (ethylene glycol) Reinforced Multi-Walled Carbon Nanotube Nanocomposite Fabrication, Characterization, Properties, and Applications." Polymers 12, no. 2 (2020): 427. http://dx.doi.org/10.3390/polym12020427.

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This paper presents the electromagnetic interference properties of multi-walled carbon nanotubes (MWCNTs) as a novel nano-reinforcement filler in poly (lactic acid) (PLA)/poly (ethylene glycol) (PEG) polymer matrix that was prepared via melt blending mode. Plasticization of PLA was first carried out by PEG, which overcomes its brittleness problem, in order to enhance its flexibility. A waveguide adapter technique was used to measure the dielectric properties ε r , and S-parameters reflection (S11) and transmission (S21) coefficients. The dielectric properties, microwave attenuation performance

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Barakou, Steennis, and Wouters. "Accuracy and Reliability of Switching Transients Measurement with Open-Air Capacitive Sensors." Energies 12, no. 7 (2019): 1405. http://dx.doi.org/10.3390/en12071405.

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Contactless capacitive (open-air) sensors are applied to monitor overvoltages near overhead line terminations at a substation or at the transition from underground cables to overhead lines. It is shown that these sensors, applied in a differentiating/integrating measuring concept, can result in excellent characteristics in terms of electromagnetic compatibility. The inherent cross-coupling from open-air sensors to other phases is dealt with. The paper describes a method to calibrate the sensor to line coupling matrix based on assumed 50 Hz symmetric phase voltages and in particular focuses on

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Zheleznyak, V. K., V. B. Tolubko, L. P. Kriuchkova, and A. P. Provozin. "Rationale for the parameters of the measuring transducer in RFID technology with inductive coupling." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 64, no. 1 (2019): 98–109. http://dx.doi.org/10.29235/1561-8358-2019-64-1-98-109.

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In the work the technology of radio-frequency identification of objects with inductive coupling is considered, using passive electric oscillating circuits tuned to fixed frequencies from the working frequency range as identification features of the object. The choice of the primary measuring transducer and the informative parameter is based on the results of the analysis of the system of inductively coupled active and passive electric oscillation circuits, known from the theory of radio engineering circuits. The parameters of the measuring transducer ensuring the fulfillment of the requirement

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Panigrahi, Ritwik, Suneel Kumar Srivastava, and Jürgen Pionteck. "FABRICATION OF ELASTOMER BLENDS INVOLVING CORE (POLYSTYRENE)@SHELL (POLYANILINE) APPROACH, THEIR CHARACTERIZATION AND APPLICATIONS IN ELECTROMAGNETIC SHIELDING." Rubber Chemistry and Technology 91, no. 1 (2018): 97–119. http://dx.doi.org/10.5254/rct.17.83730.

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ABSTRACT Fabrication of rubber blends (EPDM, NBR, and NR) with the polystyrene (PS)-polyaniline (PANI) core-shell (PS@PANI) approach are reported for the first time, and their performance is compared with similar blends prepared by simple individual mixing of PS, PANI, and rubber under identical conditions. It is noted that the unique core-shell morphology accounted for its high surface to volume ratio, leading to the homogeneous dispersion of polyaniline shell and the slow release of polystyrene core into rubber matrix as established by high-resolution transmission electron microscopy. Fourie

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Steczek, Marcin, Piotr Chudzik, and Adam Szeląg. "Application of a Non-carrier-Based Modulation for Current Harmonics Spectrum Control during Regenerative Braking of the Electric Vehicle." Energies 13, no. 24 (2020): 6686. http://dx.doi.org/10.3390/en13246686.

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The regenerative braking of railway vehicles is widely used in DC railway systems all over the world. This mode of operation provides an opportunity to reuse part of the energy consumed by vehicles, and makes the railway system more energy efficient. During regenerative braking, not only energy management is an issue, but also Electromagnetic Compatibility EMC issues, such as interference of generated current harmonics with a railway signaling system. In this paper, the selective harmonic elimination modulation technique (SHE-PWM) was introduced to the traction drive with a three-level inverte

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