Development and testing of a bidirectional distribution electronic power transformer model

Transformer size can be significantly reduced by increasing the operating frequency, which may be achieved by means of power electronics converters installed as interfaces to the power frequency systems at both transformer sides. In this work, a model for a bidirectional high-frequency power electronic transformer is presented. Several case studies have been carried out in order to evaluate the behavior of the transformer under different operating conditions and test the impact on the power quality. The results show that the electronic power transformer, also known as solid-state transformer, not only matches the functions of a conventional power transformer, but also provides additional capabilities to mitigate dynamic power quality problems. (c) 2013 Elsevier B.V. All rights reserved.