Investigation of the Power Source Parameters Influence for the Plasma Jet of DC Plasma Torch

The parameters of the power source are one of the most important factors determining the behavior of the plasma jet. Thus, simulation the operation of the DC plasma torch is impossible without the electrical parameters of the power source. Mathematical model of the DC plasma torch operation taking into account the influence of the parameters of the power source is presented in the article. The model is based on the fundamental physics laws. Parametric simulation is carried out at different flow rates of the plasma-forming gas to assess the influence of the plasma jet parameters on the current-voltage characteristics of the power source. The optimal modes of operation of the plasma torch have been determined to ensure high efficiency of the plasma spraying technology.