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29th Conference on Precision Electromagnetic Measurements (CPEM 2014)最新文献

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On the definition of DC in resistance measurements 电阻测量中直流的定义
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898572
N. Fletcher, M. Gotz, R. Goebel, B. Rolland
{"title":"On the definition of DC in resistance measurements","authors":"N. Fletcher, M. Gotz, R. Goebel, B. Rolland","doi":"10.1109/CPEM.2014.6898572","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898572","url":null,"abstract":"This paper considers the problem of defining measurement conditions that approximate `DC' for resistance standards. A recent on-site comparison between the BIPM and the PTB highlighted this difficulty in dealing with Peltier heating in 1 Ω standards, but it is a general problem with a variety of causes. We aim to draw attention to this potential source of error and to open a discussion on how to mitigate the problems by improved definitions of the measurand.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122744204","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
Electrical waveforms from vibrational energy harvesters: A trilateral measurement comparison 振动能量采集器的波形:三边测量比较
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898551
L. Callegaro, C. Cassiago, M. Sellone, R. Lapuh, B. Voljc, M. Kokalj, T. Funck, T. Möhring
{"title":"Electrical waveforms from vibrational energy harvesters: A trilateral measurement comparison","authors":"L. Callegaro, C. Cassiago, M. Sellone, R. Lapuh, B. Voljc, M. Kokalj, T. Funck, T. Möhring","doi":"10.1109/CPEM.2014.6898551","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898551","url":null,"abstract":"The traceable measurement of the output signals of vibrational energy harvesters is needed in any determination of their electromechanical energy conversion properties. These signals have highly distorted waveforms, for which conventional meters show poor measurement performance. In the framework of the EMRP 2009 Metrology for energy harvesting project we realized three different meters, based on two strongly different measurement principles (ac-dc thermal transfer, and sampling) and performed a comparison of the methods; a summary of the experimental implementations and the results of the comparison are here reported.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122539379","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
A digital input electricity energy measurement standard 一种数字输入电能计量标准
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898382
Lei Wang, Hongtao Huang, Xianlin Pan, Lijuan Liu, Min Li, Zuliang Lu
{"title":"A digital input electricity energy measurement standard","authors":"Lei Wang, Hongtao Huang, Xianlin Pan, Lijuan Liu, Min Li, Zuliang Lu","doi":"10.1109/CPEM.2014.6898382","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898382","url":null,"abstract":"A measurement standard of digital input electricity energy based on the analog based method was developed in NIM China. The resistive voltage divider and current shunt with capacitor compensation were adopted; the non-integral period sampling technology was used to reduce the algorithm error. The working frequency of this standard is 45 to 65 Hz, the voltage range is 60 V to 380 V and current range is 0.2 A to 20 A.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122120137","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
Laboratory Tests in a prototype of a Self-Monitored Current Transformer for monitoring electrical measurement systems 用于监测电测量系统的自监测电流互感器样机的实验室测试
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898233
Cesar Jorge Bandim, J. E. da Rocha Alves, Luiz Carlos Grillo de Brito, Julio Cesar Reis dos Santos, Fernando da Cunha Luiz, Luiz Fernando Pereira Barros
{"title":"Laboratory Tests in a prototype of a Self-Monitored Current Transformer for monitoring electrical measurement systems","authors":"Cesar Jorge Bandim, J. E. da Rocha Alves, Luiz Carlos Grillo de Brito, Julio Cesar Reis dos Santos, Fernando da Cunha Luiz, Luiz Fernando Pereira Barros","doi":"10.1109/CPEM.2014.6898233","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898233","url":null,"abstract":"CEPEL (Centro de Pesquisas de Energia Elétrica) has developed and patented a solution for monitoring measurement systems based on intelligent instrument transformers, called Self-Monitored Current Transformers (TCAMs)1 and Self-Monitored Potential Transformers (TPAMs)2, in order to reduce non-technical losses and monitor the electrical measurement system. This paper presents the main features of the proposed monitoring solution, based on an electronic circuit that is embedded into conventional instrument transformers. Accuracy test results obtained in the laboratory using the prototype of TCAM developed in CEPEL are also presented.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"96 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124571046","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
Recent improvements of the NRC watt balance NRC功率平衡的最新改进
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898445
C. Sanchez, B. Wood
{"title":"Recent improvements of the NRC watt balance","authors":"C. Sanchez, B. Wood","doi":"10.1109/CPEM.2014.6898445","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898445","url":null,"abstract":"We describe the modifications and improvements that have been made over the past two years to reduce the uncertainty of the NRC watt balance.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123944071","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
Coils used in the Joule Balance at the NIM 在NIM焦耳天平中使用的线圈
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898423
Z. Zhang, Z. Li, B. Han, Y. Lu, S. Li, J. Xu, G. Wang, H. Gong
{"title":"Coils used in the Joule Balance at the NIM","authors":"Z. Zhang, Z. Li, B. Han, Y. Lu, S. Li, J. Xu, G. Wang, H. Gong","doi":"10.1109/CPEM.2014.6898423","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898423","url":null,"abstract":"In the Joule Balance at the National Institute of Metrology (NIM), the dynamic measurement during the coil movement is avoided. But for this method a rather large current in the primary coil is needed to generate the necessary magnetic field in the force weighing phase. Thus the coil heating becomes an obvious uncertainty contribution. To solve this problem, a new coil system, in which the ferromagnetic material is used to increase the magnetic field and then the coil heating is reduced obviously, is designed and tested recently. But the nonlinear characteristic of the ferromagnetic material brings the difficulty for the measurement. These problems and a solution are discussed in this paper.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123234475","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
A quantum standard for sampled electrical measurements - main goals and first results of the EMRP project Q-WAVE 抽样电测量的量子标准——EMRP项目Q-WAVE的主要目标和初步成果
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898489
J. Kohlmann, R. Behr, O. Kieler, J. Diaz De Aguilar Rois, M. Sira, A. Sosso, B. Trinchera, J. Gran, H. Malmbekk, B. Jeanneret, F. Overney, J. Nissila, T. Lehtonen, J. Ireland, J. Williams, R. Lapuh, B. Voljc, T. Bergsten, G. Eklund, T. Coskun Ozturk, E. Houtzager, H. E. van den Brom, P. Ohlckers
{"title":"A quantum standard for sampled electrical measurements - main goals and first results of the EMRP project Q-WAVE","authors":"J. Kohlmann, R. Behr, O. Kieler, J. Diaz De Aguilar Rois, M. Sira, A. Sosso, B. Trinchera, J. Gran, H. Malmbekk, B. Jeanneret, F. Overney, J. Nissila, T. Lehtonen, J. Ireland, J. Williams, R. Lapuh, B. Voljc, T. Bergsten, G. Eklund, T. Coskun Ozturk, E. Houtzager, H. E. van den Brom, P. Ohlckers","doi":"10.1109/CPEM.2014.6898489","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898489","url":null,"abstract":"Josephson voltage standards are well established for use at dc and low-frequency ac voltages. The increasing demand i) to provide traceability for arbitrary waveforms, ii) to extend the range of use to higher frequencies, and iii) to improve the accuracy is being addressed in the project Q-WAVE, which is jointly funded by the European Union and the participating countries within the European Metrology Research Programme (EMRP). Here, sampling measurements and procedures using binary-divided 1 V and 10 V arrays are investigated. In addition, a quantum-based analogue-to-digital converter for direct measurements of arbitrary waveforms is under development. It will contain several Josephson arrays in series biased by a pulse drive based on opto-electronics, in order to increase the output voltage.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124356266","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: 5
A system for the accurate characterization of wideband wattmeters, power quality analyzers and PMUs 用于准确表征宽带瓦特计、电能质量分析仪和pmu的系统
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898431
U. Pogliano, B. Trinchera, D. Serazio
{"title":"A system for the accurate characterization of wideband wattmeters, power quality analyzers and PMUs","authors":"U. Pogliano, B. Trinchera, D. Serazio","doi":"10.1109/CPEM.2014.6898431","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898431","url":null,"abstract":"A multipurpose system for power measurement is here described. It consists of a six-input high-resolution fast sampling-rate digitizer and suitable transducers. Specific software programs are under development for its use as a system for the accurate measurement of power in a wide frequency band with distorted signals, as an accurate power quality analyzer and as a reference PMU. The present version has been calibrated by an independent procedure and tested in comparison with the primary system for the measurement of electrical power.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126342852","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: 4
Progress on the LNE calculable capacitor 在线可计算电容器的研究进展
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898468
G. Thuillier, O. Thévenot, P. Gournay
{"title":"Progress on the LNE calculable capacitor","authors":"G. Thuillier, O. Thévenot, P. Gournay","doi":"10.1109/CPEM.2014.6898468","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898468","url":null,"abstract":"To improve the determination of the von Klitzing constant RK at a significant level of uncertainty of about one part in 108 a new Thompson-Lampard calculable capacitor has been developed at LNE. This paper presents the progress on different parts of this system, in particular on the implementation of the method used to adjust very precisely the capacitor inter-electrodes cavity geometry.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126438275","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
10 V programmable Josephson voltage standard and its application in direct comparison with conventional Josephson voltage standard 10v可编程约瑟夫森电压标准及其应用与常规约瑟夫森电压标准的直接比较
29th Conference on Precision Electromagnetic Measurements (CPEM 2014) Pub Date : 2014-10-02 DOI: 10.1109/CPEM.2014.6898356
Yi-hua Tang, J. Sims
{"title":"10 V programmable Josephson voltage standard and its application in direct comparison with conventional Josephson voltage standard","authors":"Yi-hua Tang, J. Sims","doi":"10.1109/CPEM.2014.6898356","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898356","url":null,"abstract":"This paper briefly describes the working principle of the 10 V programmable Josephson voltage standard (PJVS) that was developed at the National Institute of Standards and Technology (NIST) and how to use it in a direct comparison with a conventional Josephson voltage standard (JVS). Manual and automatic comparison methods were investigated to verify the agreement between the two types of Josephson standards. The 10 V PJVS will be used as a transfer standard in the 2014 JVS Interlaboratory Comparison (ILC) that is organized by the National Conference of Standard Laboratories International (NCSLI).","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126522955","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
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