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IEEE 1991 International Symposium on Electromagnetic Compatibility最新文献

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A method for calibration of isotropic, E-field probes 一种校正各向同性电磁场探针的方法
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148236
K. Matloubi
{"title":"A method for calibration of isotropic, E-field probes","authors":"K. Matloubi","doi":"10.1109/ISEMC.1991.148236","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148236","url":null,"abstract":"In order for isotropic E-field (electric field) probes to measure the strength of electric fields accurately, they must be calibrated very accurately. A highly accurate method of calibrating such probes is discussed. The method describes equipment and facilities used to generate standard electric fields up to frequencies in the microwave range. The field strengths are accurately calculated using standard equations. Suggested orientation and positioning of the probe and its elements within the electric field is described.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124565792","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: 3
A new solution to inductive interference borrowed from electric railroad propulsion signal methodology 借鉴电气化铁路推进信号方法，提出了一种新的感应干扰求解方法
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148283
H. Gilcher, J. R. Kwasizur, I. Lipsitz
{"title":"A new solution to inductive interference borrowed from electric railroad propulsion signal methodology","authors":"H. Gilcher, J. R. Kwasizur, I. Lipsitz","doi":"10.1109/ISEMC.1991.148283","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148283","url":null,"abstract":"The mitigation of a severe case of inductive interference by using railroad signaling equipment designed for electrified railroad territory is detailed. In 1983, Consolidated Rail Corporation (Conrail) agreed to permit Philadelphia Electric Company (PECo) to build and operate a 230-kV transmission line on a seven-mile section of main line in suburban Philadelphia. It soon became apparent that only 600 MVA was sufficient to interrupt service and damage Conrail's signal facilities. A low-resistance path to ground for the 60-Hz interference currents was therefore provided. Since existing signal systems operating in electric propulsion territory provide this separate path, such equipment was used to resolve the induction problem in the subject nonelectrified railroad applications. Field measurements were taken with a transmission line load of 828 MVA and were used to predict the performance of the signal system at the maximum projected transmission line loading of 1418 MVA steady-state. Based on the calculated results, it was concluded that the signal system will operate satisfactorily at maximum load.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130272555","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
Note on EMI measurement at open field test site. 7. Stabilization of power line impedance for radiation measurement 关于在露天试验场进行电磁干扰测量的说明。7. 辐射测量用电力线阻抗的稳定
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148280
A. Maeda, S. Kaifuchi
{"title":"Note on EMI measurement at open field test site. 7. Stabilization of power line impedance for radiation measurement","authors":"A. Maeda, S. Kaifuchi","doi":"10.1109/ISEMC.1991.148280","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148280","url":null,"abstract":"For pt.6 see ibid. (1990). Through experiments to establish why measured values of the RF emission level from equipment under test differ according to measuring location, it was confirmed that one of the reasons is derived from the instability in the power line impedance characteristic change. Attempts to define the power line impedance above 30-MHz frequency range provide some solutions to help obtaining identical results in EMI (electromagnetic interference) level.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134319387","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
Undergraduate EMC course at Royal Melbourne Institute of Technology 皇家墨尔本理工学院本科EMC课程
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148244
S. Shihab, K. Debnath
{"title":"Undergraduate EMC course at Royal Melbourne Institute of Technology","authors":"S. Shihab, K. Debnath","doi":"10.1109/ISEMC.1991.148244","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148244","url":null,"abstract":"The contents, problems, and background of establishing an undergraduate electromagnetic compatibility (EMC) course at Royal Melbourne Institute of Technology are described. Other Australian tertiary institutions do not offer such a course. Satisfactory student participation and industry support make the effort of maintaining this course a worthwhile proposition.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129660371","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
On modeling the common mode inductor 关于共模电感的建模
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148275
M. Nave
{"title":"On modeling the common mode inductor","authors":"M. Nave","doi":"10.1109/ISEMC.1991.148275","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148275","url":null,"abstract":"The role of leakage inductance in filter performance and current handling is discussed. It is demonstrated that leakage inductance is desirable. The underlying physics for the common mode (CM) inductor are reviewed. A model which enables the designer to predict the leakage inductance of the CM choke is presented. Experimental data and practical applications are presented. A core selection methodology which incorporates leakage inductance criteria has been defined. Example predictions are demonstrated.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129964662","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: 102
Measurement of radiated emission from PC computer system PC机系统辐射发射量的测量
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148216
Han Fang, Shi Chang-sheng, Lin Deyun, Li Guoding
{"title":"Measurement of radiated emission from PC computer system","authors":"Han Fang, Shi Chang-sheng, Lin Deyun, Li Guoding","doi":"10.1109/ISEMC.1991.148216","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148216","url":null,"abstract":"The model of the radiated emission from a personal computer (PC) system is discussed by treating the components as electric dipoles and/or magnetic dipoles. The measurement results of the radiated emissions from each component or device of the PC system are introduced and discussed using the model. The measurement was carried out in an open site in which the background noise was also measured and compared with the radiated emission of the PC. The frequency range for the measurement spread from 20 MHz up to 200 MHz. Both periodic signal and random signal are measured. It is found that the main source of the radiation is the video channel including the video cable. the drive circuit in the VDU, and the CRT. The radiated level from these devices may reach as high as 40 dB above background noise. Other components such as the PCB, the disc drive, and the CPU may also produce radiation, but not as high as the video channel. It should be noted that the metal box may have some shielding effect on the component in the box.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129656106","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: 11
Shielding effectiveness study on a transportable shelter 移动式遮蔽物的遮蔽效能研究
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148196
Y. Rosenberg, D. McDonald
{"title":"Shielding effectiveness study on a transportable shelter","authors":"Y. Rosenberg, D. McDonald","doi":"10.1109/ISEMC.1991.148196","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148196","url":null,"abstract":"Under the US Army Defense Standardization and Specifications Program (DSSP) a number of shielding effectiveness experiments were performed on a transportable equipment shelter. Shielding effectiveness measurements were performed on the shelter utilizing MIL-STD-285, MIL-STD-907b, and the fixed facility requirements of MIL-STD-188-125 procedures. This was performed as a part of a hardness maintenance/hardness surveillance (HM/HS) study. Special attention was paid to shield penetrations, such as, doors, panels and power-data entry vaults. The difference in requirements and results were evaluated in an attempt to resolve such issues as test frequency selection, number of measurement locations, and test probe equipment.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129996607","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
EMC effects of the lightning protection system: shielding properties of the roof-grid 防雷系统的电磁兼容效应:屋顶电网的屏蔽特性
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148188
S. Cristina, A. Orlandi
{"title":"EMC effects of the lightning protection system: shielding properties of the roof-grid","authors":"S. Cristina, A. Orlandi","doi":"10.1109/ISEMC.1991.148188","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148188","url":null,"abstract":"A suitable set of parameters is used to evaluate the shielding performance of the roof-grid constituted by a mesh of conductors, electrically interconnected, laying on top of buildings with a large-area roof. The influence of the roof-grid on the electromagnetic field inside the building due to a direct lightning strike is shown. The values of the electromotive force induced in loops set at the most significant positions within the structure are calculated for six possible roof-grid configurations. The values of attenuation as a function of frequency and the geometric arrangement of the grid are also indicated. The presence of reinforced concrete walls is not directly taken into account.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117243783","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: 16
Coordination of surge suppressors in low-voltage AC power circuits 低压交流电源电路中浪涌抑制器的协调
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148277
M. Stringfellow, B.T. Stonely
{"title":"Coordination of surge suppressors in low-voltage AC power circuits","authors":"M. Stringfellow, B.T. Stonely","doi":"10.1109/ISEMC.1991.148277","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148277","url":null,"abstract":"A theoretical and experimental study on the coordination of surge suppressors on an indoor low-voltage power system is reported. The system studied was a 120-V three-wire power line, equipped with phase, neutral, and ground conductors. Metal-oxide varistor surge suppressors were applied at three points on the system. These were at the service entrance, at a distribution panel, and at the load. Total line length studied was 30 m (100 ft), with the distribution panel and its suppressors being located at the central point. When unidirectional surges typical of lightning were applied at the service entrance, both experimental and theoretical studies showed similar results: removal of a suppressor at either load or distribution panel resulted in unacceptably large oscillatory voltages. Best load protection was achieved with suppressors in all three locations. Distribution of surge current between the three suppressors was shown to be good for both low and high surge currents. Coordination of protective levels was shown to be achieved, even with the very long surge waves typical of lightning.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117028806","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: 11
Tailoring MIL-STD-461 RE02 electric field radiated emission limit 定制MIL-STD-461 RE02电场辐射发射限值
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148249
L. Edelman
{"title":"Tailoring MIL-STD-461 RE02 electric field radiated emission limit","authors":"L. Edelman","doi":"10.1109/ISEMC.1991.148249","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148249","url":null,"abstract":"MIL-STD-461 EMC (electromagnetic compatibility) requirements and test limits, and companion MIL-STD-462 test techniques, are imposed widely at the unit level to ensure system operational compatibility. An analytical approach is presented for tailoring MIL-STD-461 RE02 electric field radiated emission limits dictated by system performance requirements, based on emissions entering receiving antennas. Tailoring RE02 limits is based on worst-case simplifying assumptions, system performance requirements, and a 6-dB EMI (electromagnetic interference) design margin stated in MIL-E-6051.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124413713","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: 3
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