In this paper, we present a contribution to the electrical modeling of positive dc point-to-plane corona discharges in dry air (20%O 2 and 80%N 2 ) at atmospheric pressure. The electrical equivalent circuit of the proposed model is regarded as a variable resistor in series with a variable capacitor. The evolutions of the electrical parameters are obtained using a mathematical method of identification based on the recursive least squares algorithm. For the same experimental conditions, the comparison between the measured discharge current and the calculated currents obtained using the identified electrical parameters of the proposed equivalent model shows good agreement, which validates the model as well as the method of identification. To validate this work, results and discussions are given in two different operating points.Index Terms-Corona discharges, dry air, electrical modeling, point-to-plane plasma reactor, recursive least squares algorithm (RLSA).
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