AC resistance evaluation of foil, round and litz conductors in magnetic components

摘要

In this work an evaluation of the AC resistance of various types of transformer’swindings at different frequencies is made. The conductors utilized to build the transformerswere the following ones: Foil, Round Magnetic Wire and Litz Wire.Firs of all, it was necessary to assemble all the transformers with the predefinedcharacteristics parameters. This was done in order to be able to analyze the effects ofvarious characteristics. Then an accurate measuring procedure was chosen. After thatthe theoretical equations were collected with the purpose to compare the theoreticalvalues with the measured ones.The resistance of the foil winding was so low that not all the instruments were ableto measure it with enough precision. Comparing the results that have been obtained forthe research of different types of conductors, it is suggested that it would be valuableto continue future work utilizing foil windings.