1D-propagation based equivalent circuits for transformers: accounting for multi-layer structure of windings and ferrite losses

摘要

A previous paper established the link between the electromagnetic power propagation and electrical equivalent circuit of the two-winding transformer. This study pointed out that an electrical equivalent circuit can be associated with each layer (conductor, insulator, ferrite) gone through, and that linking all these elementary circuits together leads to the equivalent circuit of the entire component. Propagation is assumed to be 1D and each winding is supposed by a single layer of turns. The aim of this paper is to follow the same approach to investigate the consequences of first, the multi-layer structure of each winding and second, the observed behavior of Mn-Zn magnetic cores. Theoretical results are compared to experimental data.