Electrical power should be transmitted around the aircraft at a high voltage (HV) with low current and low conduction losses in order to reduce the weight. In this view, dual active bridge converter is found to be the most reliable configuration for sustaining aircraft operations even under severe supply transients. This converter enables significant energy savings, but requires high-power-density dc-dc converter for a variety of applications such as battery-based uninterrupted power supplies

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... mission critical aerospace applications, e.g., actuators and avionics. The dual active bridge (DAB) topology for dc-dc conversion has been popular due to its high performance, high efficiency, galvanic isolation, and inherent soft-switching property. These features make the DAB dc-dc converter suitable for high-power-density aerospace applications. Bidirectional power flow capability is a key feature of DAB dc-dc converters, permitting flexible interfacing to energy storage devices. Trapezoidal and triangular modulation methods achieve triangular and trapezoidal currents in the DAB converter ac link. Simulation and performance evaluation of the DAB and double dual active bridge converter shown in which can act as an interface between energy storage devices such as an ultracapacitor bank and the aircraft electrical power network. Ultracapacitors constitute one form of energy storage device, which can be used to meet transient power demands and smooth the load on the generators. Prototype and its results of dual active bridge converter is presented.