Operation-Oriented Design Procedure of a Three-Phase Dual-Active Bridge Converter for a Wide Operation Range

The operation ranges of the voltage, power and temperature often limit the converter performance. Therefore, it is necessary to consider these limitations during the design. This paper provides an operation-oriented design procedure of a three-phase dual-active bridge converter. The optimal design of the series inductors and the transformer are considered to minimize the loss for the desired voltage and power range. The dc-link capacitors, semiconductors and cooling system are selected according to the minimum electrical and thermal requirements. The design results can be rapidly evaluated for the desired operation range without circuit simulations. The procedure is validated through the design and construction of a 3 kW prototype.