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Advances in Power Electronics
Volume 2013 (2013), Article ID 249146, 8 pages
Research Article

Transformer Model in Wide Frequency Bandwidth for Power Electronics Systems

Electronic Technology Department, Carlos III University of Madrid, Avenida de la Universidad 30, Leganés, 28911 Madrid, Spain

Received 1 June 2012; Revised 30 October 2012; Accepted 30 November 2012

Academic Editor: Francesco Profumo

Copyright © 2013 Carlos Gonzalez-Garcia and Jorge Pleite. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The development of the smart grids leads to new challenges on the power electronics equipment and power transformers. The use of power electronic transformer presents several advantages, but new problems related with the application of high frequency voltage and current components come across. Thus, an accurate knowledge of the transformer behavior in a wide frequency range is mandatory. A novel modeling procedure to relate the transformer physical behavior and its frequency response by means of electrical parameters is presented. Its usability is demonstrated by an example where a power transformer is used as filter and voltage reducer in an AC-DC-AC converter.