Model-Reference Adaptive Control of a Dual Active Bridge dc-dc Converter for Aircraft Applications

The dual active bridge bidirectional dc-dc converter (DAB) is a topology that is gaining increasing interest in many areas of power electronics (aerospace, automotive, energy, etc.) for its many advantages and its ease of control. For this reason many variants of DAB converter have been proposed and many control algorithms are present in the literature. In the paper a new non-linear control based on model-reference adaptive approach (MRAC) is introduced. In the paper after a full dynamic formulation of the converter, MRAC control algorithm is proposed together with its stability and convergence analysis. The performances of the suggested algorithm have been verified with different simulations on a 3kW DAB converter. The results prove an excellent dynamic response of the controlled system even in the presence of strong parametric variations and disturbances.