Results 31 to 40 of about 915,622 (300)

Concept level evaluation of the optical voltage and current sensors and an arrayed waveguide grating for aero-electrical system applications [PDF]

, 2007
In this paper we present, for the first time, the hybrid fiber-optic voltage and current sensors interrogated using an arrayed waveguide grating (AWG) device.
Fusiek, G., McDonald, J.R., Niewczas, P.
core   +1 more source

Statistical Behavior of PMU Measurement Errors: An Experimental Characterization

IEEE Open Journal of Instrumentation and Measurement, 2022
Different power system applications based on synchrophasors measured in different nodes of the electric grid require information about the statistical distribution of the errors introduced by the phasor measurement units (PMUs).
Paolo Castello, Carlo Muscas, Paolo Attilio Pegoraro   +2 more
doaj   +1 more source

Four-point probe measurements using current probes with voltage feedback to measure electric potentials

, 2017
We present a four-point probe resistance measurement technique which uses four equivalent current measuring units, resulting in minimal hardware requirements and corresponding sources of noise.
Cherepanov, V., Cuma, D., Korte, S., Lüpke, F., Voigtländer, B.   +4 more
core   +1 more source

Quantum Hall conductance of two-terminal graphene devices [PDF]

, 2008
Measurement and theory of the two-terminal conductance of monolayer and bilayer graphene in the quantum Hall regime are compared. We examine features of conductance as a function of gate voltage that allow monolayer, bilayer, and gapped samples to be ...
C. M. Marcus, C. W. J. Beenakker, D. A. Abanin, J. R. Williams, L. DiCarlo, L. S. Levitov, T. A. Driscoll   +6 more
core   +3 more sources

Semiconductor loss calculation of DC–DC modular multilevel converter for HVDC interconnections

High Voltage, 2018
DC–DC modular multilevel converter (DC–DC MMC) is an attractive candidate for high-voltage DC (HVDC) interconnections since it can provide the required voltage matching, galvanic isolation and flexible power control abilities.
Shanshan Zhao, Yu Chen, Li Peng
doaj   +1 more source

Research on the Influence of Moisture Exchange between Oil and Cellulose on the Electrical Parameters of the Insulating Oil in Power Transformers

Energies, 2022
The article presents an oil moistening method, identical to the oil moistening in power transformers. Moistening took place through the migration of moisture from the moistened pressboard to the brand new oil.
Konrad Kierczynski, Przemyslaw Rogalski, Vitalii Bondariev, Pawel Okal, Daniel Korenciak   +4 more
doaj   +1 more source

Probe-configuration dependent dephasing in a mesoscopic interferometer

, 2003
Dephasing in a ballistic four-terminal Aharonov-Bohm geometry due to charge and voltage fluctuations is investigated. Treating two terminals as voltage probes, we find a strong dependence of the dephasing rate on the probe configuration in agreement with
A. N. Jordan, A.E. Hansen, A.G. Huibers, A.G. Huibers, A.M. Martin, B.L. Altshuler, C. Prasad, C.P. Umbach, C.W.J. Beenakker, D.P. Pivin, Jr., G. Seelig, G. Seelig, J.P. Bird, K. Kobayashi, M. Büttiker, M. Büttiker, M. Büttiker, M. Büttiker, M. Cassé, M.H. Devoret, M.H. Pedersen, P.W. Brouwer, R.M. Clarke, S. Pilgram, U.F. Kayser, Y. Aharonov, Y. Ji, Y. Takane, Y. Takane   +28 more
core   +2 more sources

Study on the ratio change measurement of 1000 kV HVDC divider based on improved DC voltage summation method

High Voltage, 2019
Determining the voltage ratio change is one of the core issues in the traceability of the DC voltage divider. Basing on the previous research results, this study proposes an improved DC voltage summation method to evaluate the voltage division ratio ...
Dengyun Li, Kaipei Liu, Min Lei, Feng Zhou, Changxi Yue, Jicheng Yu   +5 more
doaj   +1 more source

Diagnostics on the Basis of the Frequency-Temperature Dependences of the Loss Angle Tangent of Heavily Moistured Oil-Impregnated Pressboard

Energies, 2022
The aim of this study was to perform precision measurements of the frequency-temperature dependences of the loss angle tangent of the liquid-solid composite with the FDS Dirana meter.
Tomasz N. Kołtunowicz, Konrad Kierczynski, Pawel Okal, Aleksy Patryn, Miroslav Gutten   +4 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source