부산대학교 도서관

Due to the ability to withstand high voltage and high power level, the active neutral-point-clamped dual active bridge (ANPC-DAB) converter has attracted attention. In this article, a peak current minimization scheme based on genetic algorithm is proposed for dual-half-bridge ANPC-DAB with all switches zero-voltage switching (ZVS). Firstly, different operation modes of ANPC-DAB under triple-phase-shift (TPS) control are discussed and operation boundaries under each mode are given. Then, in order to reduce switching loss, the prerequisite for achieving all-ZVS operation is discussed in detail. On this basis, a minimum peak current optimization model with the all-ZVS condition is established. Genetic algorithm is used to search the optimal solution of the minimization model, and the transition process between different modes is also discussed. Finally, experimental results are provided to validate the effectiveness of the proposed optimization scheme.