Analysis and construction of a 2.5 kVA Medium Frequency Transformer with nanocrystalline core applied in bidirectional converters DAB

• Published in: 2019 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) pp. 1 - 6
• Main Authors: Ortiz-Marin, J., Ruiz-Robles, D., Venegas-Rebollar, V., Moreno-Goytia, E. L., Granados-Lieberman, D.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.11.2019
• Subjects: converter DC-DC; dual active bridge; nanocrystalline material; solid state transformer; vehicles electric
• ISSN: 2573-0770
• DOI: 10.1109/ROPEC48299.2019.9057119

One of the main elements for the development and implementation of bidirectional converters applied to smart grids and micro CD grids is the medium frequency transformer (MFT). This element integrates a high efficiency together with a high power density due to the increase in the design frequency of the transformer, compared to conventional transformers at 60 Hz. This change requires the analysis and development of new methodologies and materials in the design to support the needs of these new transformers applied to DC-DC converters in photovoltaic systems, wind systems, solid-state transformers, and electric vehicles. This article describes the design and construction of an MFT, it's computer simulation and experimental validation by building a prototype in the laboratory. The MFT has an efficiency of 98.71 % which was obtained for a laboratory prototype with 2.5 kVA, 250 V / 670 V and a frequency of 5 kHz.