Results 161 to 170 of about 1,212 (202)
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Temperature characteristics of Rogowski coil current sensors
2018 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2018Rogowski coils are commonly used as a current sensor head in electronic current transformers. Due to the absence of a magnetic core, the temperature has a greater impact on its error characteristics. The relationship between temperature rises and coil ratio error was analyzed by thermoelasticity theory and be verified by simulation method of this paper.
Peng Wang +3 more
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Analysis of the mutual inductance of a precise Rogowski coil
2007 IEEE Instrumentation & Measurement Technology Conference IMTC 2007, 2007A Rogowski coil is well-known current-to-voltage transducer, and in order to use it for the high-accuracy measurement of AC current (at power supply frequency) all influencing quantities and their contribution should be recognized and analyzed. Therefore, in this paper the analysis of the partial influence due to the deviation from the central position
Ilić, Damir +2 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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Calibration of Rogowski Coils With an Integrator at High Currents
IEEE Transactions on Instrumentation and Measurement, 2011This paper describes the calibration of Rogowski coils with an integrator for current measurement in the current range of up to 30 kA, at mains frequency. A current loop of ten turns with a current of 3 kA was used for calibration. The magnetic field generated in this way differs from the field of one turn placed at the center and passed with a current
Karel Draxler +3 more
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A device for calibrating Rogowski coils in time domain
Review of Scientific Instruments, 2008In this article a device for calibrating Rogowski coils in time domain is designed, which can obtain the sensitivity and dynamic response of the Rogowski coil by means of measuring currents of long pulse durations and few nanoseconds rise time. Its key device is a current step wave generator, which can generate the output with rise time of <3ns ...
Liang, Lu, Jianjun, Huang, Yanming, Li
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Digital Compensation of Rogowski Coil's Output Voltage
IEEE Transactions on Instrumentation and Measurement, 2013Due to inherent characteristics of Rogowski coils, measured signals by these transducers are distorted, and hence, it is a need to compensate their output voltages in order to reconstruct their input current. Using analog circuits for the reconstruction of the input current of a Rogowski coil is a very common technique, but this technique has no ...
Esmaeil Hemmati +1 more
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The Application of Rogowski Coil in Power System
Advanced Materials Research, 2014The traditional current transformer measurement device cannot meet the requirements of the rapid development in the current power system because of the outdated structure while the Rogowski coil has significant advantages. This article introduces some applications of Rogowski coil in power system.
Qing Hao Wang +9 more
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The Design and Calibration of Rogowski Coils
NCSLI Measure, 2009Abstract:In spite of a large number of publications on new Rogowski coil designs and applications, there are relatively few papers that deal with their calibration, and even fewer that address the traceability of these calibrations. This paper describes some of the improvements in the design and performance of Rogowski coils.
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Calibration of Rogowski coils at high currents
CPEM 2010, 2010This paper describes the calibration of a Rogowski coil (RC) with an integrator assigned for current measurement in the range up to 25 kA at 50 Hz mains frequency. A current loop with 10 turns with a current of 2.5 kA is used for calibration. The magnetic field generated in such a way differs from the field of one turn placed in the centre and passed ...
K. Draxler, R. Styblikova
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A Rogowski coil for high voltage applications
2008 IEEE Instrumentation and Measurement Technology Conference, 2008The design of a large bandwidth Rogowski probe for very high voltage applications is considered, based on the analysis of stray capacitance and shielding issues. The Rogowski is interfaced to the measuring instrument through a high CMRR instrumentation amplifier.
MARISCOTTI, ANDREA, VACCARO, LUIS RAMON
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