Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application

Abstract

A design procedure for the dual active bridge (DAB) converter is presented, which aims to optimised power density and computational effort. When designing a DAB, the selection of circuit design parameters such as switching frequency, leakage inductance and semiconductor technologies is a complex question when targeting losses and weight minimisation of the final design. In this study, analytical models of the operating waveforms, the losses and the weight of all DAB components are developed. The proposed design algorithm is used for designing a 3 kW high-frequency DAB for an aircraft DC power system.

Keywords

• bridge circuits
• optimisation
• aircraft power systems
• DC-DC power convertors
• aircraft DC power system
• power density optimisation
• single phase dual active bridge
• aircraft application
• design procedure
• dual active bridge converter
• optimised power density
• computational effort
• circuit design parameters
• leakage inductance
• semiconductor technologies
• complex question
• targeting losses
• weight minimisation
• final design
• analytical models
• DAB components
• design algorithm
• 3 kW high-frequency DAB
• power 3.0 kW