Performance analysis of an analytical calculation tool for dual-active-bridge converters

The design process of converters usually requires investigations with different abstraction levels. In this paper, an analytical calculation tool for dual-active-bridge DC-to-DC converters is introduced. This tool is used during a pre-simulation design stage. Its calculations are based on idealized current shapes. One of the most important advantages is the high calculation speed: the tool is faster by a factor of 10⁵ to 10⁶ compared to the simulation of an ideal sample-based model. It is capable of including loss descriptions of devices to provide an insight into parameter sensitivity with respect to losses and efficiency. Ultimately, the presented approach can save a significant amount of time within the design process and make subsequent simulations more target-oriented.