Abstract

This paper presents a sliding mode control (SMC) strategy for bidirectional isolated DC-DC dual active bridge (DAB) converter, feeding a generalized load composed of a resistor and a constant power load (CPL). This non-linear control of the voltage in the load is developed from the averaged model of the DAB converter with a generalized load. From the proposed sliding surface, the ideal sliding dynamics is studied to ensure the system stability. Finally, to validate the presented analysis, simulation results with various loading conditions are included. The proposed control for the DAB converter has a fast dynamic response and robustness against load variations with a stable behavior.

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