Modelling the Effect of External Disturbances in Static Characteristics of Unspecified and Determined Ignition Voltages on Dynamic Characteristics of Arc in a Circuit with the Current Source. Part. 1. Primary Analytical Correlations
Author(s) -
A. Sawicki
Publication year - 2019
Publication title -
biuletyn instytutu spawalnictwa
Language(s) - English
Resource type - Journals
eISSN - 2300-1674
pISSN - 0867-583X
DOI - 10.17729/ebis.2019.2/6
Subject(s) - arc (geometry) , ignition system , current (fluid) , voltage , mechanics , materials science , electric arc , electrical engineering , physics , electrode , engineering , mechanical engineering , thermodynamics , quantum mechanics
The article presents a set of functions useful when approximating non-linear current-voltage characteristics of static arc disturbed by external factors. To this end, modified Ayrton and Nottingham functions were used. The study involved characteristics with undefined and determined arc ignition voltages. The mapping of the above-named arc and the simulation of processes in the electric circuit with the current source were performed using the generalized Pentegov model, involving the use of appropriately transformed components of functions approximating static current-voltage characteristics of arc (taking into consideration the effect of single-parameter disturbances of the column length, mass stream or gas pressure.
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