Article
Engineering, Electrical & Electronic
Baowei Li, Minghao Wen, Xin Shi, Li Wang, Yu Chen
Summary: This paper analyzes the formation mechanism of transmission distortion in electronic voltage transformer and points out that the integrator magnifies transient transfer error and superimposes dynamic additional components on the output signal, resulting in voltage signal transfer distortion. To minimize the effect of electronic transformer transient variable error on distance relay, a method using instantaneous values after equal transfer processes is proposed. By using output differential signals of the capacitor voltage divider and Rogowski coil, this method decomposes these components into several typical variable links in series. A virtual digital transfer link constructed by a digital filter is used to compensate for the difference parts of the transfer link, ensuring the voltage and current signals pass through the same transfer link and mitigating the influence of voltage and current signal transfer difference on the calculation accuracy of distance relay. Simulation results show that the proposed distance relay method has fast operation speed and is less affected by abnormal voltage and current signal transfer, and its performance is superior to existing distance relay methods.
IET GENERATION TRANSMISSION & DISTRIBUTION
(2022)
Review
Engineering, Multidisciplinary
Muhammad Shafiq, Brian G. Stewart, Ghulam Amjad Hussain, Waqar Hassan, Maninder Choudhary, Ivo Palo
Summary: The Rogowski coil (RC) is widely used as a robust current measurement solution due to its endorsed electrical performance and flexible geometrical design. It is capable of measuring a wide range of frequencies and signal amplitudes, making it favorable for assessing normal and faulty system operations.
Article
Instruments & Instrumentation
V Nassisi, A. Serra
Summary: This work focuses on the structure of the Rogowski box in electronic devices used for biological stress, particularly exploring the impact of the narrow slit on current conduction and the calibration factor with varying slit dimensions. Experimental results show a wide range of attenuation factor variation, and the device is capable of precise measurements of sub-nanosecond rise time pulses.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Nuclear Science & Technology
Slavomir Entler, Ivan Duran, Martin Kocan, George Vayakis, Petr Sladek, Ondrej Grover, Josef Sebek, Karel Vyborny
Summary: The outer vessel steady-state magnetic field sensors (OVSS) subsystem of ITER magnetic diagnostics consists of 60 units and will be installed on the vacuum vessel outer shell to measure magnetic fields. The calibration process includes various steps to meet ITER's requirements for magnetic field measurement accuracy.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Engineering, Electrical & Electronic
Mohamed E. Ibrahim, Nourhan A. Mohamed, Ahdab El-Morshedy, Mohammed El-Shahat
Summary: This article presents a low-cost shielding method using aluminum foil sheets and examines its effectiveness through experimental results. A shielded coil model is developed and the validity of the model is verified through impedance-frequency measurements.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Analytical
Mohammed El-Shahat, Elsayed Tag Eldin, Nourhan A. Mohamed, Ahdab El-Morshedy, Mohamed E. Ibrahim
Summary: This paper presents a measurement method for the power frequency current of LED luminaires, which includes both low- and high-order harmonics. The proposed method reconstructs the current without using coil parameters and takes into account the required frequency range. The effectiveness of the method is demonstrated through theoretical and experimental evaluations.
Article
Instruments & Instrumentation
Mark B. Moffett, David L. Chesny, Jake M. Cole, Kaleb W. Hatfield, Razvan Rusovici
Summary: This paper proposes a sensor fusion protocol for high-speed pulsed DC current calibrated capacitor discharge systems, allowing the deployment of in-house built Bdot probes and Rogowski coils. The methodology has been demonstrated in a characteristic plasma environment, with relative errors of +/- 13% and +/- 15% for current and magnetic field probes, respectively.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Nuclear Science & Technology
Y. Ma, M. Nakamoto, T. Sakurai, Y. Kiyoshi, M. Iguchi, Y. Hong, B. Bellesia, P. Aprili, C. Luongo, S. Koczorowski, K. Gomikawa, V. Tronza, H. Nishino, B. Peluso, G. Gros, F. Pelcot, A. Hattat, S. Huguenot, F. Bony, J. Lama, E. Fujiwara, Y. Okada, M. Yamane, A. Baratta, D. Battaglia, H. Marteil, G. Counsell, G. Vayakis, M. Walsh
Summary: The integration of Continuous External Rogowski (CER) diagnostics into the ITER Toroidal Field Coils (TF coils) was a marked success, paving the way for future diagnostics development for DEMO and future fusion reactors.
FUSION ENGINEERING AND DESIGN
(2023)
Article
Nuclear Science & Technology
S. Entler, I. Duran, M. Simonovsky, J. Reboun, P. Turjanica, Z. Soban, P. Sladek, L. Viererbl
Summary: The paper introduces new ceramic-metal Hall sensors with an antimony sensing layer. The results of temperature tests on second-generation antimony sensors based on thick printed copper technology are presented, including long-term stability testing of the sensors.
FUSION ENGINEERING AND DESIGN
(2023)
Article
Engineering, Electrical & Electronic
Mohamed E. Ibrahim, Amr M. Abd-Elhady
Summary: This article presents a method for measuring three-phase motor currents using a two-winding Rogowski coil, which reduces measurement complexity. A current reconstruction algorithm is developed and validated in theoretical and experimental studies.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Binxiong Yu, Jian-cang Su, Rui Li, Liang Zhao, Xudong Qiu, Wei Shang, Jinliang Liu
Summary: A novel shielded double-winding Rogowski coil is studied for measuring nanosecond current pulses. The coil is analyzed theoretically and the attenuation factor is obtained. It is found that the coil reduces interference caused by annular displacement current due to mirror-symmetry structure. A double-winding coil is developed for discharge current pulses and a compact connector with low resistance sampling resistor is also developed. The calibration of the coil agrees with the theoretical result and the coil shows good response for rectangular pulses with front times of 4.3 ns.
Article
Engineering, Multidisciplinary
Binxiong Yu, Jian-cang Su, Rui Li, Liang Zhao, Jie Cheng, Bo Zeng
Summary: This paper investigates a shielded Rogowski coil with a return line for measuring nanosecond-range current pulses, finding that the connection mode of the end lead affects the output pulse waveform. By properly connecting the free end of the return line to the ground earth, issues with distorted waveforms and capacitive voltage dividing prepulses are resolved. The developed coil, with a large number of turns and a 4-mm diameter return line, shows good response for measuring heavy-current pulses with fast rise times.
Article
Nuclear Science & Technology
Fateme Shakeri, Ardavan Kouhi, Bahram Jazi, Mahsa Moazzemi-Ghamsari
Summary: The discrete Rogowski coil used in the pickup coils assembly in the vacuum vessel of Damavand tokamak is advantageous in its insensitivity to external magnetic fields. Among the three interpolation methods compared, the piecewise quadratic interpolation method yields the lowest error in estimating current. The approach also shows better accuracy in measuring plasma current compared to a continuous external Rogowski coil.
FUSION ENGINEERING AND DESIGN
(2021)
Article
Nanoscience & Nanotechnology
Liwen Chen, Haibin Chen, Zheng Zhu, Yu Wu, Haohan Zhen, Tao Tong, Lei Yu, Peigang Shen
Summary: This paper introduces the harmonic requirements of a power system transformer and the principle of the Rogowski coil electronic current transformer. It summarizes the simple and practical methods for harmonic measurement of the Rogowski coil electronic current transformer and performs harmonic measurement using high-precision harmonic source, standard current transformer, and transformer calibrator. The results demonstrate the method's strong applicability and simple operation, greatly enriching the harmonic measurement methods.
Article
Chemistry, Analytical
Xiangyu Tan, Wenyun Li, Xiaowei Xu, Gang Ao, Fangrong Zhou, Jingjing Zhao, Qinghua Tan, Wenbin Zhang
Summary: This paper proposes a non-intrusive, AC-DC wide-bandwidth current sensor based on the composite measurement principle, allowing for the measurement of currents from new energy sources such as photovoltaic and wind power in the smart grid. The sensor combines tunneling reluctance and Rogowski coil technologies, and its feasibility is verified through theoretical analysis and simulation.
Article
Nuclear Science & Technology
Damien Fasel, Yanis Andrebe, Jeremie Dubray, Alexander N. Karpushov, Vyacheslav V. Kolmogorov, Blaise Marletaz, Philippe Marmillod, Lukas Muehle, Albert Perez, Igor V. Shikhovtsev, Ugo Siravo
FUSION ENGINEERING AND DESIGN
(2017)
Article
Nuclear Science & Technology
Alexander N. Karpushov, Rene Chavan, Stefano Coda, Vladimir I. Davydenko, Frederic Dolizy, Aleksandr N. Dranitchnikov, Basil P. Duval, Alexander A. Ivanov, Damien Fasel, Ambrogio Fasoli, Vyacheslav V. Kolmogorov, Pierre Lavanchy, Xavier Llobet, Blaise Marletaz, Philippe Marmillod, Yves Martin, Antoine Merle, Albert Perez, Olivier Sauter, Ugo Siravo, Igor V. Shikhovtsev, Aleksey V. Sorokin, Matthieu Toussaint
FUSION ENGINEERING AND DESIGN
(2017)
Article
Nuclear Science & Technology
G. Pruneri, P. Cara, R. Heidinger, A. Kasugai, J. Knaster, S. Ohira, Y. Okumura, K. Sakamoto
FUSION ENGINEERING AND DESIGN
(2017)
Article
Instruments & Instrumentation
J. Hawke, Y. Andrebe, R. Bertizzolo, P. Blanchard, R. Chavan, J. Decker, B. Duval, P. Lavanchy, X. Llobet, B. Taz Marl, P. Marmillod, G. Pochon, M. Toussaint
JOURNAL OF INSTRUMENTATION
(2017)
Article
Instruments & Instrumentation
Mario A. Chavarria, Alessandro V. Matheoud, Philippe Marmillod, Youjiang Liu, Deyi Kong, Jurgen Brugger, Giovanni Boero
REVIEW OF SCIENTIFIC INSTRUMENTS
(2017)
Article
Nuclear Science & Technology
Braj K. Shukla, Jatin Patel, Hardik Mistry, Harshida Patel, Dharmesh Purohit, K. G. Parmar, Rajan Babu, Joydeep Ghosh, Rakesh Tanna, Kumarpalsinh Jadeja, Kaushal Patel, Moti Makwana, C. N. Gupta, Mahesh Kushwah
FUSION ENGINEERING AND DESIGN
(2019)
Article
Physics, Fluids & Plasmas
K. A. Jadeja, Kiran Patel, K. M. Patel, B. G. Arambhadiya, J. Ghosh, R. L. Tanna, K. S. Acharya, S. B. Bhatt, M. B. Chowdhuri, R. Manchanda, Minsha Shah, S. Ghosh, Vara Prasad Kella, Tanmay Macwan, Harshita Raja, Rohit Kumar, Suman Aich, Devilal Kumawat, M. B. Kalal, Rachana Rajpal, C. N. Gupta, P. K. Chattopadhyay, B. R. Kataria, Y. C. Saxena
Article
Instruments & Instrumentation
H. De Oliveira, P. Marmillod, C. Theiler, R. Chavan, O. Fevrier, B. Labit, P. Lavanchy, B. Marletaz, R. A. Pitts, S. Coda, J. Ahn, R. Albanese, S. Alberti, E. Alessi, S. Allan, H. Anand, G. Anastassiou, Y. Andrebe, C. Angioni, M. Ariola, M. Bernert, M. Beurskens, W. Bin, P. Blanchard, T. C. Blanken, J. A. Boedo, T. Bolzonella, F. Bouquey, F. H. Braunmueller, H. Bufferand, P. Buratti, G. Calabro, Y. Camenen, D. Carnevale, F. Carpanese, F. Causa, R. Cesario, I. T. Chapman, O. Chellai, D. Choi, C. Cianfarani, G. Ciraolo, J. Citrin, S. Costea, F. Crisanti, N. Cruz, A. Czarnecka, J. Decker, G. De Masi, G. De Tommasi, D. Douai, M. Dunne, B. P. Duval, T. Eich, S. Elmore, B. Esposito, M. Faitsch, A. Fasoli, N. Fedorczak, F. Felici, O. Fevrier, O. Ficker, S. Fietz, M. Fontana, L. Frassinetti, I. Furno, S. Galeani, A. Gallo, C. Galperti, S. Garavaglia, I. Garrido, B. Geiger, E. Giovannozzi, M. Gobbin, T. P. Goodman, G. Gorini, M. Gospodarczyk, G. Granucci, J. P. Graves, R. Guirlet, A. Hakola, C. Ham, J. Harrison, J. Hawke, P. Hennequin, B. Hnat, D. Hogeweij, J. -P. Hogge, C. Honore, C. Hopf, J. Horacek, Z. Huang, V. Igochine, P. Innocente, C. Ionita Schrittwieser, H. Isliker, R. Jacquier, A. Jardin, J. Kamleitner, A. Karpushov, D. L. Keeling, N. Kirneva, M. Kong, M. Koubiti, J. Kovacic, A. Kramer-Flecken, N. Krawczyk, O. Kudlacek, B. Labit, E. Lazzaro, H. B. Le, B. Lipschultz, X. Llobet, B. Lomanowski, V. P. Loschiavo, T. Lunt, P. Maget, E. Maljaars, A. Malygin, M. Maraschek, C. Marini, P. Martin, Y. Martin, S. Mastrostefano, R. Maurizio, M. Mavridis, D. Mazon, R. McAdams, R. McDermott, A. Merle, H. Meyer, F. Militello, I. G. Miron, P. A. Molina Cabrera, J. -M. Moret, A. Moro, D. Moulton, V. Naulin, F. Nespoli, A. H. Nielsen, M. Nocente, R. Nouailletas, S. Nowak, T. Odstrcil, G. Papp, R. Paprok, A. Pau, G. Pautasso, V. Pericoli Ridolfini, P. Piovesan, C. Piron, T. Pisokas, L. Porte, M. Preynas, G. Ramogida, C. Rapson, J. J. Rasmussen, M. Reich, H. Reimerdes, C. Reux, P. Ricci, D. Rittich, F. Riva, T. Robinson, S. Saarelma, F. Saint-Laurent, O. Sauter, R. Scannell, C. Schlatter, B. Schneider, P. Schneider, R. Schrittwieser, F. Sciortino, M. Sertoli, U. Sheikh, B. Sieglin, M. Silva, J. Sinha, C. Sozzi, M. Spolaore, T. Stange, T. Stoltzfus-Dueck, P. Tamain, A. Teplukhina, D. Testa, C. Theiler, A. Thornton, L. Tophoj, M. Q. Tran, C. Tsironis, C. Tsui, A. Uccello, S. Vartanian, G. Verdoolaege, K. Verhaegh, L. Vermare, N. Vianello, W. A. J. Vijvers, L. Vlahos, N. M. T. Vu, N. Walkden, T. Wauters, H. Weisen, M. Wischmeier, P. Zestanakis, M. Zuin
REVIEW OF SCIENTIFIC INSTRUMENTS
(2019)
Article
Physics, Fluids & Plasmas
J. Ghosh, R. L. Tanna, P. K. Chattopadhyay, A. Sen, Harshita Raj, Pravesh Dhyani, Suman Dolui, S. Kulkarni, K. Mishra, Raj Singh, Sunil Kumar, S. B. Bhatt, K. A. Jadeja, K. M. Patel, C. N. Gupta, Moti M. Makwana, K. Shah, Chhaya Chavda, V. K. Panchal, N. C. Patel, J. Raval, Shishir Purohit, S. Joisa, C. V. S. Rao, Raju Daniel, Sameer K. Jha, B. K. Shukla, E. Praveenlal, V Raulji, R. Rajpal, P. K. Atrey, U. Nagora, R. Manchanda, N. Ramaiya, M. B. Chowdhuri, R. Jha, Y. C. Saxena, R. Pal
Summary: Disruptions caused by hydrogen gas puffing in the ADITYA tokamak can be successfully mitigated through stabilization of MHD modes by applying a biased-electrode before the gas injection. In larger tokamaks where biased electrodes cannot be placed inside the plasma, attempts to mitigate disruptions through ion cyclotron waves (ICWs) have been successful. The amplitude of MHD modes is reduced by applying ICWs before disruptions, preventing disruptions by stabilizing the MHD modes.
PHYSICS OF PLASMAS
(2021)
Article
Physics, Fluids & Plasmas
Kiran Patel, Umesh Nagora, Hem C. Joshi, Surya Pathak, Kumarpalsinh A. Jadeja, Kaushal Patel, Rakesh L. Tanna
Summary: This article reports on the development of phase extraction method in a heterodyne interferometer using a field-programmable gate array (FPGA) for real-time density estimation in tokamak plasma diagnostics. The FPGA technology provides parallel processing, minimum control delay, efficient processing architecture, and jitter-free synchronization between different control layers, enabling accurate and real-time electron density measurements.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2021)
Article
Physics, Fluids & Plasmas
Tanmay Macwan, Kaushlender Singh, Suman Dolui, Ankit Kumar, Harshita Raj, Pramila Gautam, Praveenlal Edappala, J. Ghosh, R. L. Tanna, Rohit Kumar, K. A. Jadeja, K. M. Patel, Suman Aich, Sameer Kumar, D. Raju, P. K. Chattopadhyay, A. Sen, Y. C. Saxena, R. Pal
Summary: The study in the ADITYA-U tokamak revealed that the background plasma poloidal rotation significantly affects the rotation frequency of the drift tearing mode, and that the mode rotation frequency can be modified by adjusting the rotation velocity and electric field of the background plasma.
PHYSICS OF PLASMAS
(2021)
Article
Physics, Fluids & Plasmas
Rohit Kumar, J. Ghosh, Tanmay Macwan, Suman Aich, R. L. Tanna, Kaushal Patel, Kumarpal Jadeja, S. K. Jha
Summary: This study investigates the characteristics of induced eddy currents in a tokamak device and their impact on magnetic diagnostics, equilibrium field penetration, and plasma column displacement. Eddy current measurements were conducted in the ADITYA-U tokamak, and a filament model was used to describe the spatial and temporal distribution of the eddy currents.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2022)
Article
Instruments & Instrumentation
N. Ramaiya, R. Manchanda, M. B. Chowdhuri, N. Yadava, R. Dey, A. Kumar, K. Shah, S. Patel, K. A. Jadeja, K. M. Patel, R. Kumar, S. Aich, S. K. Pathak, R. L. Tanna, J. Ghosh, ADITYA-U team
Summary: Spectroscopy in vacuum ultraviolet (VUV) and visible ranges is important in the investigation and diagnosis of tokamak plasmas. Near-infrared (NIR) spectroscopy has become an effective tool in understanding edge plasma dynamics. A NIR spectroscopic diagnostic has been developed and installed on the ADITYA-U tokamak.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Instruments & Instrumentation
K. Shah, J. Ghosh, G. Shukla, M. B. Chowdhuri, R. Manchanda, N. Yadava, N. Ramaiya, K. A. Jadeja, K. M. Patel, R. L. Tanna, K. B. K. Mayya
Summary: Spectroscopic studies of medium and high Z impurities are important in fusion research to understand impurity behavior in plasma and their role in mitigating disruptions. This study in Aditya-U tokamak observed spatially resolved Ar II line emissions using a high resolution multi-track spectroscopic diagnostic.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Proceedings Paper
Physics, Particles & Fields
Matteo Fontana, Laurie Porte, Philippe Marmillod
19TH JOINT WORKSHOP ON ELECTRON CYCLOTRON EMISSION AND ELECTRON CYCLOTRON RESONANCE HEATING
(2017)