Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898387
A. Bounouh, G. Almuneau, H. Baumgartner, A. Cuenat, N. Gambacorti, J. Hoffmann, R. Kern, F. Kienberger, J. Krupka, D. Lackner, B. Pollakowski, T. G. Rodriguez, F. Sametoğlu, L. Usydus, S. Winter, F. Witt
End of 2013 EURAMET, the European metrology organization opened a call to advance measurement science and technology in the field of Energy by providing funding for Joint Research Projects (JRP) to be funded jointly by the European Commission and the participating countries in the frame of the European Metrology Research Programme (EMRP). This paper describes a planned project; no technical results will be available at the time of the conference. We feel, however, that CPEM is a suitable platform to discuss our plans.
{"title":"The EMRP project Metrology for III–V materials based high efficiency multi-junction solar cells","authors":"A. Bounouh, G. Almuneau, H. Baumgartner, A. Cuenat, N. Gambacorti, J. Hoffmann, R. Kern, F. Kienberger, J. Krupka, D. Lackner, B. Pollakowski, T. G. Rodriguez, F. Sametoğlu, L. Usydus, S. Winter, F. Witt","doi":"10.1109/CPEM.2014.6898387","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898387","url":null,"abstract":"End of 2013 EURAMET, the European metrology organization opened a call to advance measurement science and technology in the field of Energy by providing funding for Joint Research Projects (JRP) to be funded jointly by the European Commission and the participating countries in the frame of the European Metrology Research Programme (EMRP). This paper describes a planned project; no technical results will be available at the time of the conference. We feel, however, that CPEM is a suitable platform to discuss our plans.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"96 10 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":"127991926","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898588
Marcelo Luiz Lourenco, A. J. Batista, Wander Goncalves da Silva
This paper describes the application of the methodology established in the Supplement 1 to the Guide to the Expression of Uncertainty in Measurement for the evaluation of uncertainties in the measurement of losses in power transformers. Also presented is the criterion for the validation of the software used for these measurements based on the original Guide. This additional method was developed since the original one presents some limitations, especially those related to the degree of nonlinearity of the measuring models. The results suggest that this degree of nonlinearity is such that the application of this supplementary method is necessary.
{"title":"Evaluation of uncertainties in testing of losses in power transformers using GUM-S1","authors":"Marcelo Luiz Lourenco, A. J. Batista, Wander Goncalves da Silva","doi":"10.1109/CPEM.2014.6898588","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898588","url":null,"abstract":"This paper describes the application of the methodology established in the Supplement 1 to the Guide to the Expression of Uncertainty in Measurement for the evaluation of uncertainties in the measurement of losses in power transformers. Also presented is the criterion for the validation of the software used for these measurements based on the original Guide. This additional method was developed since the original one presents some limitations, especially those related to the degree of nonlinearity of the measuring models. The results suggest that this degree of nonlinearity is such that the application of this supplementary method is necessary.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"77 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":"127518527","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898344
L. Palafox, R. Behr, J. Schurr, B. Kibble
Josephson impedance bridges have been reported to provide uncertainties close to that from the best conventional bridges when comparing 1:1 impedance ratios. For a 10:1 capacitance ratio (100 pF to 10 pF) a type A uncertainty accuracy of a few parts in 107 has been achieved with 1-V programmable Josephson arrays. The accuracy can be significantly improved when using 10-V Josephson arrays. Preliminary measurements are also presented with type A uncertainties at the level of parts in 108 (k = 1).
{"title":"Precision 10∶1 capacitance ratio measurement using a Josephson impedance bridge","authors":"L. Palafox, R. Behr, J. Schurr, B. Kibble","doi":"10.1109/CPEM.2014.6898344","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898344","url":null,"abstract":"Josephson impedance bridges have been reported to provide uncertainties close to that from the best conventional bridges when comparing 1:1 impedance ratios. For a 10:1 capacitance ratio (100 pF to 10 pF) a type A uncertainty accuracy of a few parts in 107 has been achieved with 1-V programmable Josephson arrays. The accuracy can be significantly improved when using 10-V Josephson arrays. Preliminary measurements are also presented with type A uncertainties at the level of parts in 108 (k = 1).","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":"128807609","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898491
A. Katkov, G. Gubler, J. Lee, R. Behr, J. Nissila
This paper describes the investigation of the influence of harmonics in a signal that is measured by using an AC quantum voltmeter. Equations for parameters of the signal being measured, such as amplitude of the fundamental frequency that depends on the sampling frequency and harmonics are presented.
{"title":"Influence of harmonics on AC measurements using a quantum voltmeter","authors":"A. Katkov, G. Gubler, J. Lee, R. Behr, J. Nissila","doi":"10.1109/CPEM.2014.6898491","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898491","url":null,"abstract":"This paper describes the investigation of the influence of harmonics in a signal that is measured by using an AC quantum voltmeter. Equations for parameters of the signal being measured, such as amplitude of the fundamental frequency that depends on the sampling frequency and harmonics are presented.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"133 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":"122434899","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898279
M. Homklintian, T. Funck, J. Melcher, H. Bachmair
A determination of the frequency behaviour of the PTB calculable capacitor in the audio frequency range is carried out by applying an equivalent circuit model. The circuit model considers the influence of distributed admittances and impedances within the calculable capacitor and has been derived from the main currents flowing inside the calculable capacitor and the voltage drops caused by these currents. It has been found that the frequency dependence of the cross capacitance is proportional to the square of the frequency, whereby mutual inductances of opposite electrodes and capacitances to ground dominate the behaviour at higher frequencies. At a frequency of 1592 Hz, the correction of the PTB calculable capacitor with a value of 1 pF amounts to 9.2×10-8 pF with an expanded uncertainty (k = 2) of 3.1×10-8 pF.
{"title":"Calculated frequency behaviour of the PTB calculable capacitor in audio frequency range","authors":"M. Homklintian, T. Funck, J. Melcher, H. Bachmair","doi":"10.1109/CPEM.2014.6898279","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898279","url":null,"abstract":"A determination of the frequency behaviour of the PTB calculable capacitor in the audio frequency range is carried out by applying an equivalent circuit model. The circuit model considers the influence of distributed admittances and impedances within the calculable capacitor and has been derived from the main currents flowing inside the calculable capacitor and the voltage drops caused by these currents. It has been found that the frequency dependence of the cross capacitance is proportional to the square of the frequency, whereby mutual inductances of opposite electrodes and capacitances to ground dominate the behaviour at higher frequencies. At a frequency of 1592 Hz, the correction of the PTB calculable capacitor with a value of 1 pF amounts to 9.2×10-8 pF with an expanded uncertainty (k = 2) of 3.1×10-8 pF.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"32 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":"128560634","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898458
Yuan Gao, Honghui Li, Zengmin Wang
We developed a magnetic flux measurement system which is based on the binary Josephson system two years ago. After that, we continue researching on the improvement of magnetic flux measurement and start to focus on the precision measurement of the mutual inductance with the flux measurement system we built before. This paper introduces the mutual inductance measurement method which is based on the programmable Josephson system at NIM. Experimental results show that the type A uncertainty of the measurement of mutual inductances of 341 mH and 577 mH is less than 2 ppm, which demonstrates the feasibility and reliability of the flux and mutual inductance measurement method we proposed.
{"title":"Mutual inductance measurement with programmable Josephson system","authors":"Yuan Gao, Honghui Li, Zengmin Wang","doi":"10.1109/CPEM.2014.6898458","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898458","url":null,"abstract":"We developed a magnetic flux measurement system which is based on the binary Josephson system two years ago. After that, we continue researching on the improvement of magnetic flux measurement and start to focus on the precision measurement of the mutual inductance with the flux measurement system we built before. This paper introduces the mutual inductance measurement method which is based on the programmable Josephson system at NIM. Experimental results show that the type A uncertainty of the measurement of mutual inductances of 341 mH and 577 mH is less than 2 ppm, which demonstrates the feasibility and reliability of the flux and mutual inductance measurement method we proposed.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"17 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":"117165998","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898319
E. Paez, R. Callarotti, M. Azpúrua, Y. Sánchez
In this paper we present the calculation of the equivalent circuit's parameters for a magnetic loop-coupled cylindrical resonant cavity. This analysis is valid even for moderated quality factors, Q. The equivalent circuit is determined via field analysis using the Lagrangian formulation considering all terms of the mathematical formalism, whose RLC parameters are determined using a Vector Network Analyzer and the critical points method. This approach offers an interesting insight useful to characterize resonant cavities with potential application in electromagnetic material characterization.
{"title":"Determination of the equivalent circuit for a cylindrical loop-coupled cavity resonator","authors":"E. Paez, R. Callarotti, M. Azpúrua, Y. Sánchez","doi":"10.1109/CPEM.2014.6898319","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898319","url":null,"abstract":"In this paper we present the calculation of the equivalent circuit's parameters for a magnetic loop-coupled cylindrical resonant cavity. This analysis is valid even for moderated quality factors, Q. The equivalent circuit is determined via field analysis using the Lagrangian formulation considering all terms of the mathematical formalism, whose RLC parameters are determined using a Vector Network Analyzer and the critical points method. This approach offers an interesting insight useful to characterize resonant cavities with potential application in electromagnetic material characterization.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"187 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":"117273652","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898493
G. Granger, Barry Wood
A 10 V programmable Josephson voltage standard system has been installed at the National Research Council Canada. The current margins for the first Josephson step at either current polarity are greater than 1 mA. A preliminary direct comparison of this programmable system with a hysteretic Josephson voltage standard is performed at 10 V.
{"title":"Preliminary comparison of a 10 V programmable josephson voltage standard and a hysteretic josephson voltage standard","authors":"G. Granger, Barry Wood","doi":"10.1109/CPEM.2014.6898493","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898493","url":null,"abstract":"A 10 V programmable Josephson voltage standard system has been installed at the National Research Council Canada. The current margins for the first Josephson step at either current polarity are greater than 1 mA. A preliminary direct comparison of this programmable system with a hysteretic Josephson voltage standard is performed at 10 V.","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":"115162881","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898322
L. Oberto, M. Bisi, D. Jahn, S. Lippert, L. Brunetti
The European Metrology Research Program Project NEW-07 “Microwave and Terahertz metrology for homeland security” is aimed to develop metrological traceability of sources and detectors in sub-mm and THz frequency bands as a prerequisite for the traceability of more complex THz measurement systems, such as spectrometers, body scanners and imaging systems. In this framework, a Time Domain Spectrometer working up to about 3 THz has been set-up at Istituto Nazionale di Ricerca Metrologica, Italy. Its characteristics are here described. First characterization measurements have been done and are here reported in terms of stability and bandwidth and signal to noise ratio achievable with different kind of emitters.
{"title":"Set-up of a THz Time Domain Spectrometer at INRIM","authors":"L. Oberto, M. Bisi, D. Jahn, S. Lippert, L. Brunetti","doi":"10.1109/CPEM.2014.6898322","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898322","url":null,"abstract":"The European Metrology Research Program Project NEW-07 “Microwave and Terahertz metrology for homeland security” is aimed to develop metrological traceability of sources and detectors in sub-mm and THz frequency bands as a prerequisite for the traceability of more complex THz measurement systems, such as spectrometers, body scanners and imaging systems. In this framework, a Time Domain Spectrometer working up to about 3 THz has been set-up at Istituto Nazionale di Ricerca Metrologica, Italy. Its characteristics are here described. First characterization measurements have been done and are here reported in terms of stability and bandwidth and signal to noise ratio achievable with different kind of emitters.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"238 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":"115752033","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}
Pub Date : 2014-10-02DOI: 10.1109/CPEM.2014.6898617
C. H. Hall Barbosa, J. Hallstrom, M. Silva, L. C. Azevedo, L. C. Faria
The International Electrotechnical Commission (IEC) issued in 2010 a revision of the family of standards IEC 60060, describing, among other requirements, how to calculate the various amplitude and time parameters used to evaluate high voltage impulse waveforms. However, the standards are not clear in some aspects, especially when describing tail chopped lightning impulses. This paper aims at describe in detail how to properly estimate the time parameters of such impulses.
{"title":"Estimation of time parameters of tail chopped lightning impulses - Clarification of the standard IEC 60060-1/2010","authors":"C. H. Hall Barbosa, J. Hallstrom, M. Silva, L. C. Azevedo, L. C. Faria","doi":"10.1109/CPEM.2014.6898617","DOIUrl":"https://doi.org/10.1109/CPEM.2014.6898617","url":null,"abstract":"The International Electrotechnical Commission (IEC) issued in 2010 a revision of the family of standards IEC 60060, describing, among other requirements, how to calculate the various amplitude and time parameters used to evaluate high voltage impulse waveforms. However, the standards are not clear in some aspects, especially when describing tail chopped lightning impulses. This paper aims at describe in detail how to properly estimate the time parameters of such impulses.","PeriodicalId":256575,"journal":{"name":"29th Conference on Precision Electromagnetic Measurements (CPEM 2014)","volume":"64 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":"125945823","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}
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