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