Abstract
In this paper, a developed method for measuring power frequency ac current using Rogowski coil is presented. The proposed method uses a differentiator in order to reconstruct the current that is intended to be measured. This method gives accurate results as well as it requires only few samples to successfully reconstruct the power frequency current. These advantages are investigated by experimental testing using two different designs of Rogowski coil. The first Rogowski coil has a higher number of turns as compared with the second one. In addition, a digital signal processor is integrated with the coil to implement the proposed reconstruction method. The obtained results give an evidence for the proposed method validity as well as its efficacy.
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