PCB Rogowski coils for high di/dt current measurement

Karrer, N.; Hofer-Noser, P.

doi:10.1109/pesc.2000.880497

Cited by 26 publications

(7 citation statements)

References 6 publications

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“…As current flows around the conductor, it creates a magnetic field. This field is converted into a signal by Faraday's induction law, which is proportional to the current or proportional to the rate of change of the current flowing in the conductor [14]. The voltage induced in the coil is proportional to the current rate of change (derivative) in the straight current conductor.…”

Section: Principle Of Rogowski Coil (Rc)mentioning

confidence: 99%

Series Arc Fault Detection Sensor Based on an ABS Rogowski Coil in Medium Voltage

Nanyan

Rohani

Hamid

et al. 2022

J. Phys.: Conf. Ser.

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Three types of Rogowski coils were designed and constructed by utilising 3D printing technology: RC1, RC2, and RC3, with the sensors having the same geometrical dimensions but varying number of turns: 20, 50, and 100 respectively. To verify the feasibility and effectiveness of the proposed sensors, a series arc fault generator was set up and high voltage of up to 3-kV was injected. The analysis of the Fast Fourier Transform (FFT) was done by using MATLAB to determine frequency and voltage amplitude. From the analysis, it was determined that the higher the number of turns, the greater the sensitivity. The resonance frequency (MHz) dropped significantly as the number of turns increased. Furthermore, sensor features such as frequency bandwidth and sensitivity are affected by the number of turns, which was thoroughly investigated in this study. The Rogowski coil was created to detect the high frequency component of the series arc fault signal. All the designed sensors reliably detect the series arc fault signal, according to the experimental results.

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Section: Principle Of Rogowski Coil (Rc)mentioning

confidence: 99%

Series Arc Fault Detection Sensor Based on an ABS Rogowski Coil in Medium Voltage

Nanyan

Rohani

Hamid

et al. 2022

J. Phys.: Conf. Ser.

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“…It is this frequency band, and its interaction with the higher bandwidth driving frequency, which may be used to assess the plasma discharge regime as shown in section 3. The effect of capacitor damping is also visible in the results presented in section 3, though is visualized through the coil current rather than power supply voltage by means of a Hofer-Noser Karrer (HOKA) probe [14]. The HOKA probe is placed around the generator inductive coil and uses the magnetic field produced by current flow over the coil surface to perform integral measurements of the current itself (hereafter denoted as I HOKA as opposed to I rf ).…”

Section: Experimental Set-upmentioning

confidence: 99%

Transient electromagnetic behaviour in inductive oxygen and argon–oxygen plasmas

Chadwick

Herdrich

Kim

et al. 2016

Plasma Sources Sci. Technol.

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In order to develop inductive electric propulsion as a flexible, throttleable technology for future space operations, a greater understanding of discharge transitions within the inductive plasma generator discharge chamber is required. This paper presents a non-intrusive method to determine the conditions under which transitions between the capacitive, low inductive, and high inductive regimes occur with greater accuracy, as well as determining the proportion of a single discharge cycle the plasma spends in either capacitive or inductive regime. Such a method allows a more robust method of classification of inductive discharges than previously available and can be applied to numerous gases. This approach presents an advantage over previous methods which relied on strongly radiating or thermally reactive gases to exhibit certain behaviour (due to the restriction of classical diagnostics on such high power sources) before a transition could be confirmed. This paper presents results from the proposed method applied to a pure oxygen plasma as well as two combinations of argon and oxygen (at 1:1 and 3:2 Ar:O 2 volumetric ratios) in order to assess the tunability of electromagnetic regime transitions through modifications of gas composition rather than mechanical alterations. Transitions to the higher inductive mode were observed for much lower input powers for the argon-oxygen blends, as was expected, allowing final discharge conditions to occupy the inductive regime for 94% and 85% of a single discharge cycle for the 3:2 and 1:1 Ar:O 2 mixtures, respectively. Pure oxygen achieved a maximum inductive proportion of 71% by comparison.

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“…At the end of the twentieth century, the development of PCB technology provided new ideas for the development of traditional Rogowski coils [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39], with its digital wiring…”

Section: Introductionmentioning

confidence: 99%

PCB Rogowski Coils for Capacitors Current Measurement in System Stability Enhancement

et al. 2023

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In terms of high-current measurement of capacitors, PCB Rogowski coils have attracted much attention because of their small size and easy installation. However, they are vulnerable to electromagnetic interference. In order to improve the immunity of the coil, this paper studies the influence of the structure and parameter changes of the double-layer PCB coil on the measurement accuracy of mutual inductance. By testing the frequency response of four common coil structures, a differential winding coil structure is proposed. Based on the measurement of large capacitance current, the influence of non-electrical parameters of coils on the measurement accuracy of mutual inductance is experimentally verified.

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PCB Rogowski coils for high di/dt current measurement

Cited by 26 publications

References 6 publications

Series Arc Fault Detection Sensor Based on an ABS Rogowski Coil in Medium Voltage

Series Arc Fault Detection Sensor Based on an ABS Rogowski Coil in Medium Voltage

Transient electromagnetic behaviour in inductive oxygen and argon–oxygen plasmas

PCB Rogowski Coils for Capacitors Current Measurement in System Stability Enhancement

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