Optimization of Bidirectional DC-DC Buck-Boost Converter with Non-ideal Magnetic Coupling

The non-idealities of the components used in power converters can lead to suboptimal operating solutions if they have not been considered in the preliminary analysis. In particular, the idealization of the coupling in the integrated magnetic components may represent one of the major sources of differences in the final behavior concerning the expected one, with implications for the performance. In this paper, the effects of considering a non-ideal coupling in the Bidirectional Buck-Boost converter with Magnetic Coupling are explored, and an optimized use of the Triple Phase Shifted modulation considering them is proposed to reduce the switching and conduction losses. The validation of the theory is performed through experimental measurements on a prototype in representative scenarios of the boost operation.