Testing the Effect of Column Length Disturbances on the Method used for Determining the Pentegov Model Describing the Electric Arc of the Ayrton Type Static Characteristics

The research involved the determination of physical factors affecting the generation of arc column length disturbances in electrotechnological devices. The article contains a justification related to the selection of the Pentegov model for representing the dynamic characteristics of a sinusoidal current powered arc. The research also included the modification of the Ayrton formula approximating static voltage-current characteristics by taking into consideration arc column length random disturbances as well as the development of an arc macro-model and simulations of processes in a simple circuit using MATLAB-Simulink software. The research demonstrated the efficiency of the three measurement method for determining the Pentegov model parameters in conditions arc column length disturbances.