Design of a PCB Rogowski Coil based on the PEEC Method

Conference: CIPS 2012 - 7th International Conference on Integrated Power Electronics Systems
03/06/2012 - 03/08/2012 at Nuremberg, Germany

Proceedings: CIPS 2012

Pages: 6Language: englishTyp: PDF

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Guillod, T.; Gerber, D.; Biela, J. (Laboratory for High Power Electronic Systems, ETH Zurich, Physikstrasse 3, 8092 Zurich, Switzerland)
Müsing, A. (Power Electronic Systems Laboratory, ETH Zurich, Physikstrasse 3, 8092 Zurich, Switzerland)

In order to measure currents with high di/dt, Rogowski coils are usually used. This work studies the design of a PCB coil by means of electromagnetic field simulation. The PEEC method has been used to extract the parameters of the equivalent circuit of the coil geometry. Different winding arrangements were analyzed with respect to measurement signal strength and noise immunity. The magnetic coupling between the current sensor and the busbar is investigated for the used test setup. Finally, a comparison of the PEEC simulation results with measurements, applying a 400 A current pulse concludes this paper. The results show that the PEEC method allows a simulation of the coil including the setup in which it is used with a reasonable computational effort.