Transient voltages in welding generators

In this paper is given a mathematical analysis of the armature terminal voltage of a d-c welding generator at interruption of the short circuit current, with and without neutralizing transformer. Also, consideration is given to the voltage transients across the field circuit winding of the neutralizing transformer caused by the make and break of the armature circuit. Comparisons are shown between oscillograms and calculations for these transient voltages.