ABSTRACT This paper introduces the integration of an asymmetric active neutral point clamped (ANPC) topology with the dual active bridge (DAB) converter, incorporating a hybrid SiC/Si component design to leverage the advantages of SiC devices in high‐frequency and high‐voltage scenarios. The proposed five‐level ANPC DAB converter offers a wide voltage power transfer range, maintaining soft‐switching conditions and providing a significant degree of control flexibility. To enhance the efficiency of the converter, this paper analyses the redundant switching states of the topology and proposes an optimized switching sequence that helps reduce switching losses. The operating principles are analysed, and the peak inductor current and power transfer functions are derived for various operating modes. An optimization strategy is subsequently proposed to minimize the peak inductor current. Moreover, to simplify the optimization process, a genetic algorithm is employed in conjunction with soft‐switching conditions to reduce redundancy in the selection of operating modes. Finally, an experimental platform is established to test current stress and efficiency under different operating conditions and modulation strategies, thereby validating the effectiveness of the proposed strategies.
Li et al. (Thu,) studied this question.