Abstract—This project “implementation of bidirectional dc-dc converter for aerospace applications” composed of a bi directional dc to dc converter which can operate in buck and boost modes. This will be useful in regenerative applications. This project presents simulation of the proposed bidirectional dc to dc converter in both operational modes. The proposed model can be used to predict the converter efficiency at any desired operating point. The new model can serve as an important teaching cum-research tool for Dual Active Bridge hardware design (devices and passive components selection), soft-switching-operating range estimation, and performance prediction at the design stage. The operation of the DAB dc–dc converter has been verified through extensive simulations. A Dual Active Bridge converter prototype was designed on the basis of the proposed model.