Modeling algorithms for sags with exponential fronts and other types of electromagnetic disturbances from power supply network

This paper describes modeling algorithms in order to obtain different types of electromagnetic disturbances from the power supply network. The main algorithm is designed for voltage sags with exponential fronts and uses an exponential function for each sag front. It also uses the data range translation to an adequate specified range in order to obtain the desired waveshape and the use of of the algorithm within a virtual signal generator with GUI, obtained with the help of a sound card, for the research of these disturbances which affect the power quality.