Effect of Generated Harmonics On Transformer Losses Due to Solar Penetration

Abstract

Transformers are the essential component in transferring large amounts of power, and they are often designed and engineered to operate with rated frequency and perfect sinusoidal input supply. When a transformer is fed from the output of a solar PV inverter, its efficiency decreases or harmonic losses increase. A collection of current harmonics data extracted from inverter output as a working explanation of a specific harmonic for analytically assessing transformer losses. This paper examines the increase in the losses generated with and without consideration of even current harmonics of the PV inverter using the Matlab program for Transformers due to the impact of solar inverter output penetration into the grid.