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Damping factor function in AC electric arc models. Part 4: Arc model selection criteria and determination of time constant in low current arc

Antoni Sawicki, Maciej Haltof
2017.05.22 by Marek Dragan

Causes of problems in strict classification of arcs into two categories: low and high current have been described. Assumption has been taken that processes in column can be approximated with one of two models: Mayr or Cassie. A new criterion of arc classification has been proposed, based on minimal deviation of harmonic relation of real voltage on arc column comparing to theoretically estimated data. Using MATLAB-Simulink program, errors in determining time constant value have been analyzed in Mayr model of arc described with different mathematical models with and without random noise.

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