2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE最新文献_第10页

System Level Risk Analysis for Immunity in Automotive Functional Safety Analyses 汽车功能安全分析中免疫系统级风险分析

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245692

L. Devaraj, A. Ruddle, A. Duffy

引用次数: 6

Time-Domain EMI Measurements using a Low Cost Digitizer to Optimize the Total Measurement Time for a Test Receiver 使用低成本数字化仪进行时域EMI测量以优化测试接收机的总测量时间

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245801

Tom Hartman, R. Grootjans, N. Moonen, F. Leferink

{"title":"Time-Domain EMI Measurements using a Low Cost Digitizer to Optimize the Total Measurement Time for a Test Receiver","authors":"Tom Hartman, R. Grootjans, N. Moonen, F. Leferink","doi":"10.1109/EMCEUROPE48519.2020.9245801","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245801","url":null,"abstract":"By analyzing electromagnetic interference (EMI) based on its spectral components important time-domain information is lost. Conventional super-heterodyne frequency band stepping EMI test receivers have to use long dwell times for every frequency which makes the total measurement time too long. Often dwell times are set too short, causing time-varying interference, or cyclo-stationary interference, to be detected improperly. The concept of time-varying EMI is also not incorporated in standards, which are only based on frequency domain limits. To catch these time-varying interferences the receiver has to measure for at least one repetition period. Measuring many spectral components for at least the repetition of a cyclo-stationary signal causes detrimental measurement times. Time-domain electromagnetic interference (EMI) analyzers have been proposed to reduce these long measurement times, but remain expensive. To reduce costs the utilization of time-domain EMI measurements using a low cost digitizer is examined. A PicosScope in conjunction with Digital Signal Processing (DSP) is used to create the possibility to estimate the total measurement time of a conventional EMI receiver based on the dwell times. This can be used to optimize the total measurement time needed for the test receiver, while still complying to standards, resulting in reduced measurement times otherwise needed in expensive test labs. A short-time Fast-Fourier transform (STFFT) is used to examine the interfering source in both frequency and time simultaneously. It was also shown that the conventional EMI receiver perceives certain time varying signals as continuous waves due to the spectral nature of this receiver.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125997038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Design approach for high efficiency NFC systems with magnetic shielding materials 采用磁屏蔽材料的高效近场通信系统设计方法

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245861

J. Victoria, P. A. Martinez, A. Suarez, A. Alcarria, Sebastian Mirasol, J. Torres

{"title":"Design approach for high efficiency NFC systems with magnetic shielding materials","authors":"J. Victoria, P. A. Martinez, A. Suarez, A. Alcarria, Sebastian Mirasol, J. Torres","doi":"10.1109/EMCEUROPE48519.2020.9245861","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245861","url":null,"abstract":"The performance of a Near Field Communication (NFC) antenna may be diminished when it is placed close to any conductive surface such as a metallic case or a battery. This degradation is caused due to the stray magnetic field created by the eddy currents induced on the surface, which is opposite to the intended field generated by the NFC antenna. One of the first solutions that come to mind to designers when facing this problem is the use of high permeability magnetic shielding based on sintered ferrite sheets. This is a good approach but something that is not generally taken into account is that these materials introduce an additional inductance to the NFC antenna. If the permeability of the material is too high (respecting the necessary value for solving the problem), this additional inductance results in shifting the resonance frequency to lower values than the desired (13.56 MHz). Thereby this contribution focuses on the analysis of a ferrite-polymer composite magnetic shielding that provides lower relative permeability (µr = 25) at the communication frequency. This approach is more effective against the presence of a metallic element when there is a gap of some millimeters between the conductive surface and the NFC antenna. Therefore, different thicknesses of the same ferrite-polymer material are evaluated and the effect of introducing this kind of shielding between the conductive surface and the NFC antenna is analyzed from the standpoint of the loop antenna equivalent circuit. The results presented are based on the Smith Chart measurement as well as a simulation model that corroborates the results obtained experimentally.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130987929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development of an Experimental System for Current Perception from 1 to 10 MHz 1 ~ 10mhz电流感知实验系统的研制

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245791

Y. Kamimura, Kenshu Daimon, Naoya Matsumoto, Shunai Kimura, Ken Sato

引用次数: 2

Investigation of a High Frequency Coupling Path Between HV and Shaft of an Electric Machine 电机高压与轴间高频耦合路径的研究

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245876

S. Tsiapenko, H. Hirsch

{"title":"Investigation of a High Frequency Coupling Path Between HV and Shaft of an Electric Machine","authors":"S. Tsiapenko, H. Hirsch","doi":"10.1109/EMCEUROPE48519.2020.9245876","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245876","url":null,"abstract":"Electrification of the drivetrain in modern vehicles brings new problems to the front line. High power electronics, high capacity high voltage batteries and electric machines with vast power density are now common attributes for vehicles. Existing low voltage (LV) on-board power network was extended with a high voltage (HV) drivetrain, which made a great impact on electromagnetic compatibility compliance testing. Low voltage supply conducted and radiated emission limits were adapted by to fit new emissions with their much higher amplitudes. In order to fulfill new limits for HV systems the drivetrain must be fully shielded. Due to construction restrains, an application of a shield around the electric shaft of the powertrain is not feasible. Existing magnetic field inside the stator and insulation breakdowns inside of the bearings make coupling to the shaft very effective, which is resulting in undesirable shaft currents. Hence the drivetrain must comply with defined limits for the electromagnetic compatibility of low voltage on-board power systems. In order to comply, the coupling path between HV side and the shaft of the machine should fulfill the limits for coupling attenuation defined in the international standard International Special Committee on Radio Interference 25 (CISPR 25) [1]. This publication describes a method to obtain coupling attenuation of the machine in the operating state and presents results compared with the corresponding limits described in CISPR 25.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134203585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Transient Impedance of the Synchronous Generator Grounding Electrode due to Short Circuit Current 同步发电机接地电极在短路电流作用下的瞬态阻抗

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245753

S. Šesnić, Ante Soldo, D. Poljak

引用次数: 1

Verification of Worst-Case Analytical Model for Estimation of Electromagnetic Background Created by Mobile (Cellular) Communications 移动(蜂窝)通信产生的电磁背景估计的最坏情况分析模型的验证

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245655

V. Mordachev

{"title":"Verification of Worst-Case Analytical Model for Estimation of Electromagnetic Background Created by Mobile (Cellular) Communications","authors":"V. Mordachev","doi":"10.1109/EMCEUROPE48519.2020.9245655","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245655","url":null,"abstract":"Results of experimental verification of the proposed analytical technique for calculation of the average electromagnetic background (EMB) intensity created by base stations of cellular communications, which is based on estimation of the average electromagnetic loading on area (EMLA) created by base stations, are presented. This verification is executed by comparison of the published results of measurements of levels of EMB generated by 2G/3G radio networks in more than 30 countries, with the results of corresponding analytical worst-case estimations of EMLA and average EMB intensity for the real and potential places of EMB measurements. Results of this comparison convincingly confirm the adequacy of the offered analytical technique for worst-case estimation of EMB created by mobile (cellular) communications, and also support its real practical importance for an assessment of electromagnetic ecology of various areas, electromagnetic safety of population and intersystem EMC in conditions of extremely fast development of radio networks and services of 4G/5G/6G.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133243701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Mode Coupling in TEM-Cells due to Variations in the Geometry using Generalized Telegraphist’s Equations 利用广义电报方程求解几何变化引起的tem - cell模式耦合

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245825

Pham Hoang Duc, Garbe Heyno

引用次数: 2

Study and Analysis on Addressing Present Drawbacks of Traditional Surge Protection Devices (SPDs) using Machine Learning

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245830

Tuhan Sapumanage, N. Sapumanage, Chamika Bandara

{"title":"Study and Analysis on Addressing Present Drawbacks of Traditional Surge Protection Devices (SPDs) using Machine Learning","authors":"Tuhan Sapumanage, N. Sapumanage, Chamika Bandara","doi":"10.1109/EMCEUROPE48519.2020.9245830","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245830","url":null,"abstract":"Surge Protection Devices (SPDs) are being extensively used at present to safeguard electronic equipment from lightning generated transient over-voltages. Despite SPDs being employed to protect electronic equipment, every year millions worth damages are being reported. Hence, isolation from the power grid would be considered as the best solution to prevent the infiltration of harmful energy contained in the transient over-voltages. But isolation cannot be performed by humans as they are not sensitive to imminent lightning discharges nor fast enough to respond post lightning events. Thus, there should be an extra-fast mechanism to detect imminent lighting discharge and perform a change-over from the utility supply to a local power supply. This study aims to device a machine learning solution which could be used to overcome such limitations in traditional SPDs. For the convenience of analysis, reported impulses were categorized into three signature types. Namely, pulse-burst, unipolar and bipolar. A data sample was taken which represents all above said signature types, was processed and fed into the Azure Machine Learning Studio in order to train a linear regression model. Such model yielded an R2 value of 0.7547. The strong positive correlation between the strength of the electric field and the magnitude of the induced voltage was thereby confirmed. The deployed solution had a mean accuracy of 87.82% of its predictions, confirming its ability to accurately predict the magnitude of the induced voltages to take proactive action and thereby safeguard electrical and electronic equipment if an incoming induced voltage is beyond the threshold.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128542555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Importance of Cables During HERO Tests 电缆在HERO测试中的重要性

2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE Pub Date : 2020-09-23 DOI: 10.1109/EMCEUROPE48519.2020.9245688

Sena Çınar, Gökçenur Gürbüz, Merve Deniz Kozan

引用次数: 0