Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Tapio Lehtonen"'
Autor:
Tapio Lehtonen
Publikováno v:
Lehtonen, T A 2019, ' Harmonic Power Standard of VTT MIKES ', IEEE Transactions on Instrumentation and Measurement, vol. 68, no. 6, 8556073, pp. 2047-2052 . https://doi.org/10.1109/TIM.2018.2880056
Lehtonen, T 2018, Harmonic Power Standard of VTT MIKES . in CPEM 2018-Conference on Precision Electromagnetic Measurements . IEEE Institute of Electrical and Electronic Engineers, Conference on Precision Electromagnetic Measurements, CPEM 2018, Paris, France, 8/07/18 . https://doi.org/10.1109/CPEM.2018.8501017
Lehtonen, T 2018, Harmonic Power Standard of VTT MIKES . in CPEM 2018-Conference on Precision Electromagnetic Measurements . IEEE Institute of Electrical and Electronic Engineers, Conference on Precision Electromagnetic Measurements, CPEM 2018, Paris, France, 8/07/18 . https://doi.org/10.1109/CPEM.2018.8501017
This paper describes the new single-phase harmonic power standard developed at VTT MIKES. The standard is based on a custom digitizer, which is designed for both laboratory and on-site power metrology. Test signals are generated using a dual-channel
Autor:
Jari Hällström, Tapio Lehtonen
Publikováno v:
Lehtonen, T A & Hällstrom, J 2017, ' Optimizing Temperature Coefficient and Frequency Response of Rogowski Coils ', IEEE Sensors Journal, vol. 17, no. 20, 8022679, pp. 6646-6652 . https://doi.org/10.1109/JSEN.2017.2743259
This paper describes a new method for optimizing both Rogowski coil's temperature coefficient and its high frequency response. The proposed scheme is based on finding a value for coil termination resistance and for its temperature coefficient, which
Publikováno v:
Lehtonen, T, Hällström, J & Suomalainen, E-P 2016, A three-phase calibration and field measurement setup based on a custom digitizer . in Precision Electromagnetic Measurements (CPEM 2016), 2016 Conference on . IEEE Institute of Electrical and Electronic Engineers, pp. 1-2, Conference on Precision Electromagnetic Measurements, CPEM 2016, Ottawa, Canada, 10/07/16 . https://doi.org/10.1109/CPEM.2016.7540738
This paper describes a new three-phase power measurement setup to be used as a national power standard in Finland. A custom 6-channel digitizer was previously developed for the purpose together with measurement software, which can be extended at will
Autor:
Matthias Schmidt, Serkan Dedeoglu, C. Weber, J. Meisner, Tatu Nieminen, Ahmet Merev, Joni Kluss, Esa-Pekka Suomalainen, A. P. Elg, Anders Bergman, W. Lucas, Tapio Lehtonen, Jari Hällström, Ernest Houtzager
Publikováno v:
Hällström, J, Bergman, A, Dedeoglu, S, Elg, A-P, Houtzager, E, Klüss, J, Lehtonen, T, Lucas, W, Meisner, J, Merev, A, Nieminen, T, Schmidt, M, Suomalainen, E-P & Weber, C 2015, ' Performance of a modular wideband HVDC reference divider for voltages up to 1000 kV ', IEEE Transactions on Instrumentation and Measurement, vol. 64, no. 6, pp. 1390-1397 . https://doi.org/10.1109/TIM.2015.2408795
This paper describes the design and performance of a modular wideband high-voltage dc (HVDC) reference divider with a ratio uncertainty of less than 0.005% at 1000 kV. The divider has a maximum nominal voltage of 1000 kV when five 200-kV modules are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5f96fe36b3595d3b70abd0b35740af7
https://aperta.ulakbim.gov.tr/record/100659
https://aperta.ulakbim.gov.tr/record/100659
Autor:
Tapio Lehtonen, Jari Hällström
Publikováno v:
Lehtonen, T & Hällström, J 2014, A Modular USB 2.0 digitizer for electrical power measurements . in 29th Conference on Precision Electromagnetic Measurements (CPEM 2014) ., 6898267, IEEE Institute of Electrical and Electronic Engineers, pp. 78-79, 29th Conference on Precision Electromagnetic Measurements, CPEM 2014, Rio de Janeiro, Brazil, 24/08/14 . https://doi.org/10.1109/CPEM.2014.6898267
A metrology grade digitizer aimed for electrical power and power quality measurements is presented. The digitizer has seven simultaneously sampling floating analog-to-digital converter channels and a modular structure. Each channel has a temperature
Autor:
Jari Hällström, Ahmet Merev, Anders Bergman, W. Lucas, Tapio Lehtonen, J. Meisner, Serkan Dedeoglu, Meic H. Schmidt, A. P. Elg, Esa-Pekka Suomalainen, C. Weber, Joni Kluss, Ernest Houtzager, Tatu Nieminen
Publikováno v:
29th Conference on Precision Electromagnetic Measurements (CPEM 2014).
This paper describes the performance of a wideband HVDC reference divider. The divider concept is a shielded modular divider and it is intended for traceable calibration of HVDC measuring systems u ...
Publikováno v:
SPIE Proceedings.
The paper reviews the state-of-the-art color measuring systems used for the control of newspaper printing. The printing process requirements are specified and different off-line and on-line color quality control systems, commercially available and un
Autor:
Anders Bergman, Mathias Nordlund, Alf-Peter Elg, Johann Meisner, Stephen Passon, Jari Hällström, Tapio Lehtonen
Publikováno v:
VTT Technical Research Centre of Finland-PURE
Bergman, A, Nordlund, M, Elg, A-P, Meisner, J, Passon, S, Hällström, J & Lehtonen, T 2017, Charcterization of a Fast Step Generator . in R Díaz (ed.), 2017 ISH : 20th International Symposium on High Voltage Engineering ., ISH2017_484, Conseil international des grands réseaux électriques (CIGRE), 20th International Symposium on High Voltage Engineering, ISH 2017, Buenos Aires, Argentina, 28/08/17 . < https://e-cigre.org/publication/ISH2017_484-characterization-of-a-fast-step-generator >
Bergman, A, Nordlund, M, Elg, A-P, Meisner, J, Passon, S, Hällström, J & Lehtonen, T 2017, Charcterization of a Fast Step Generator . in R Díaz (ed.), 2017 ISH : 20th International Symposium on High Voltage Engineering ., ISH2017_484, Conseil international des grands réseaux électriques (CIGRE), 20th International Symposium on High Voltage Engineering, ISH 2017, Buenos Aires, Argentina, 28/08/17 . < https://e-cigre.org/publication/ISH2017_484-characterization-of-a-fast-step-generator >
Lighting impulse measurements are made as a matter of routine in high voltage testing of high-voltage electrical equipment. The test is often decisive for acceptance of the equipment under test, and consequently proper and precise calibration of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::94d7587247f33f150eac75a6c3dd93f4
https://cris.vtt.fi/en/publications/f507fc3d-24fd-45fc-b8bc-f50d9a7d40c3
https://cris.vtt.fi/en/publications/f507fc3d-24fd-45fc-b8bc-f50d9a7d40c3
Publikováno v:
VTT Technical Research Centre of Finland-PURE
Södergård, C, Lehtonen, T, Launonen, R & Äikäs, J 1995, ' A system for inspecting colour printing quality ', Paper presented at TAGA '95 Conference, Orlando, United States, 2/04/95-5/04/95 .
Södergård, C, Lehtonen, T, Launonen, R & Äikäs, J 1995, ' A system for inspecting colour printing quality ', Paper presented at TAGA '95 Conference, Orlando, United States, 2/04/95-5/04/95 .
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::87e48d11b638dc48664dc166ca6dcff8
https://cris.vtt.fi/en/publications/2fcbdfe6-4980-4613-a15d-b876a93fcc6f
https://cris.vtt.fi/en/publications/2fcbdfe6-4980-4613-a15d-b876a93fcc6f