Results 161 to 170 of about 4,438 (211)
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Measurement Science and Technology, 1991
The Rogowski coil is a flux-to-voltage transducer for non-intrusive current measurement. The authors describe fabrication methods for improving mechanical stability and increasing sensitivity.
P N Murgatroyd +5 more
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The Rogowski coil is a flux-to-voltage transducer for non-intrusive current measurement. The authors describe fabrication methods for improving mechanical stability and increasing sensitivity.
P N Murgatroyd +5 more
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Magnetic shielding of Rogowski coils
2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2017This paper describes the impact of Rogowski coil (RC) construction imperfections on measurement errors. A procedure is shown for detecting RC non-homogeneity using a rotary dipole magnetic field inducing a current inside an RC. The influence of RC magnetic shielding on reducing spurious fields is described.
Karel Draxler, Renata Styblikova
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Rogowski coils: theory and experimental results
Review of Scientific Instruments, 1979The theory is given of the voltage output of a Rogowski coil excited by a current pulse flowing along the axis of the coil. In this theory the Rogowski coil is considered as a delay line. The results do not differ from those obtained usually by considering the coil as a voltage source dφ/dt with an inductive output impedance.
NASSISI, Vincenzo, A. LUCHES
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IEEE Potentials, 2008
This study has analyzed the performance of an alternating electric current measuring system using a Rogowski coil as a transducer, applied to magnitudes of milliamps to hundreds of amperes. It has been noticed that for low amplitudes, as well as for low frequencies, noise interferes with precision.
Mauricio Rigoni +5 more
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This study has analyzed the performance of an alternating electric current measuring system using a Rogowski coil as a transducer, applied to magnitudes of milliamps to hundreds of amperes. It has been noticed that for low amplitudes, as well as for low frequencies, noise interferes with precision.
Mauricio Rigoni +5 more
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Determination of Rogowski Coil Constant
2006 International Conference on Applied Electronics, 2006Method of determination of Rogowski coil (RC) constant at 50 Hz frequency is described in the article. The RC constant determining dependence between output voltage and measured current is checked and also a phase displacement of these two quantities is measured. Analysis of measurement uncertainties is also presented.
Karel Draxler, Renata Styblikova
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Bus bar embedded rogowski coil
2018 IEEE Applied Power Electronics Conference and Exposition (APEC), 2018This paper presents a design procedure of a bus bar embedded Rogowski coil in a laminated bus bar from the viewpoint of geometry. The current sensor can detect a current waveform inside the laminated bus bar. The characteristics of the current sensor depend on the both the coil and the laminated bus bar geometry; therefore, the impact of the coil ...
Yoshikazu Kuwabara +4 more
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50 Hz current measurements with Rogowski coils
Conference Digest Conference on Precision Electromagnetic Measurements, 2003The applicability of Rogowski coils for high precision measurements of 50 Hz currents is studied. In the set-up, Rogowski coils serve as current sensors and the amplitude and phase are determined with a sampling voltmeter. Another measurement channel enables current ratio and electrical power measurements.
Helistö, Panu +4 more
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Interlocking Rogowski coils: a fool's transformer
Proceedings of Conference on Precision Electromagnetic Measurements Digest, 2002We have constructed interlocking, air-core, toroidally-wound solenoids. In principle, there should be no coupling between these Rogowski coils (in the absence of return loop and capacitive effects). We have searched for a mutual inductance between two such interlocking coils and report preliminary results. >
D.F. Bartlett, J.H. Thiesen
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High Frequency Rogowski Coil Response Characteristics
IEEE Transactions on Plasma Science, 1982The high frequency response characteristics of differentiating and self-integrating Rogowski coils have been calculated for arbitrary values of the coil terminating resistance assuming Ampere's law to be valid. Effects due to a reactive terminating impedance are also discussed.
W. Stygar, G. Gerdin
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Using Rogowski coils inside protective relays
2013 66th Annual Conference for Protective Relay Engineers, 2013Traditionally, microprocessor-based relays incorporate a secondary current transformer to convert the 5 A or 1 A input current to a lower level for input to an analog-to-digital (A/D) converter as part of the input processing. The limits of this input circuit are well known, and relay designers take them into account when determining operating ...
Veselin Skendzic, Bob Hughes
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