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Design and Development of Rogowski Coil Sensors for Eddy Currents Measurement on Toroidal Vessel

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Abstract

In tokamak, eddy currents are produced due to change in plasma positions during plasma instabilities that result into generation of electromagnetic forces on interaction with the induced currents. Measurement of this current is essential to design a mechanical structure that can withstand this force. Principle objective of this paper is the development of Rogowski coil sensor to measure eddy currents on a toroidal vessel. The paper presents an elaborative and practical construction technique of a Rogowski coil. The calibration method for the Rogowski coil is also presented. Rogowski coils as an eddy currents diagnostics are tested and experiments to measure induced currents on the toroidal vessel are performed using the coils. Experimental values of eddy currents are compared with the ANSYS simulation results.

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Acknowledgments

The authors are grateful and indebted to Institute for Plasma Research. Special thanks to Dr. P.K. Kaw for the opportunity to work on this project work. Lastly we are grateful to all those, who have contributed directly or indirectly towards the project.

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Authors and Affiliations

  1. Institute for Plasma Research, Gandhinagar, India

    N. Ravi Prakash, Rajan Babu & R. Gangradey

  2. Institute of Technology, Nirma University, Ahmedabad, India

    Kanikdeep Flora & H. K. Patel

Authors
  1. N. Ravi Prakash
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  2. Kanikdeep Flora
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  3. Rajan Babu
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  4. R. Gangradey
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  5. H. K. Patel
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Correspondence to H. K. Patel.

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Prakash, N.R., Flora, K., Babu, R. et al. Design and Development of Rogowski Coil Sensors for Eddy Currents Measurement on Toroidal Vessel. J Fusion Energ 32, 263–267 (2013). https://doi.org/10.1007/s10894-012-9562-0

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  • DOI: https://doi.org/10.1007/s10894-012-9562-0

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