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Journal of Sensors and Sensor Systems An open-access peer-reviewed journal
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Volume 7, issue 2
J. Sens. Sens. Syst., 7, 569-575, 2018
https://doi.org/10.5194/jsss-7-569-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
J. Sens. Sens. Syst., 7, 569-575, 2018
https://doi.org/10.5194/jsss-7-569-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Regular research article 30 Oct 2018

Regular research article | 30 Oct 2018

Magnetic-field CMOS microsensor for low-energy electric discharge detection

Mohamed Hadj Said1, Farès Tounsi1, Libor Rufer2, Hatem Trabelsi1, Brahim Mezghani1, and Andrea Cavallini3 Mohamed Hadj Said et al.
  • 1METS Research Group, National Engineering School of Sfax, University of Sfax, 3038 Sfax, Tunisia
  • 2Université Grenoble Alpes, CNRS, Grenoble INP, TIMA, 38000, Grenoble, France
  • 3Innovazione Tecnologica Lab., Scuola di Ingegneria e Architettura, University of Bologna, 40136 Bologna, Italy

Abstract. This paper addresses the development and characterization of a non-intrusive silicon-based microsensor, which can detect electric partial discharges in electrical insulation equipment. Early partial discharge detection prevents failures and can be used to optimize maintenance operations. Despite the potential that CMOS technology offers, miniaturized electric discharge detector has neither been investigated nor implemented, until now. The developed microsensor demonstrates its ability to record electric discharge emission thanks to the presence of a miniaturized planar inductor. The squared inductor of 50 turns with a side length of 1.5mm used in our sensor has been fabricated on top of a silicon substrate in a CMOS technology. The total inductor wire length of loop antenna is 30cm to achieve 100MHz bandwidth. Using the microsensor at 1cm from the discharge site, a damped sinusoidal induced voltage with an amplitude of 2V has been measured at its output. We observed that the output signal spectrum is highly concentrated around a central resonance frequency, which remains constant. The main advantage of such design resides in its monolithic integration added to the high autonomy, which improves the microsensor efficiency.

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This paper addresses the development and characterization of a non-intrusive silicon-based microsensor, which can detect electric partial discharges in electrical insulation equipment. Early partial discharge detection prevents failures and can be used to optimize maintenance operations. The main advantage of the proposed CMOS-based design resides in its monolithic integration added to the high autonomy, which improves the microsensor efficiency.
This paper addresses the development and characterization of a non-intrusive silicon-based...
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