A Guide To Designing Your Own Rogowski Sensor (Part 3)

Focus:

Parts 1 and 2 discussed the design of the Rogowski coil and integrator. In part 3, the author checks how the coil and integrator work together as the complete Rogowski sensor through simulation of the previously derived sensor schematic. To verify the sensor’s accuracy, these simulations are carried out for current waveforms over a range of duty cycles and frequencies with different waveshapes and both unipolar and bipolar currents. Sensory accuracy is assessed.

What you’ll learn:

• How to design a low-cost Rogowski coil current sensor
• How to assess performance of a Rogowski coil current sensor design

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Author & Publication:

Gregory Mirsky, Design Engineer, Deer Park, Ill., How2Power Today, Jun 15 2024

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