Computer Based Analysis for the Parameters of a Distribution Transformer in a Non-Sinusoidal Regime

Abstract

Many industrial or domestic applications contain non-linear loads (converters, UPSs, process computers, LED lamps) that generate higher harmonics and distortions in the waveform spectrum of the absorbed current. When operating far from the sinusoidal shape of the current passing through the transformer, its windings generate additional losses, complementary to those of the permanent sinusoidal mode, thus reducing the transformer charging capacity (which has been designed for purely sinusoidal regimes). Therefore, in order not to cause supplementary heating inside its constructive elements, it is necessary to assess its power in relation to the level of the deforming regime.