The application provides a three-level dual active bridge converter
inductance current effective value control method and
system, and the method comprises the following steps: obtaining transmission power and
inductance current of the three-level dual active bridge converter under full-
half bridge mode based on dividing the full-
half bridge mode of the three-level dual active bridge converter; solving
inductance current effective value according to the inductance current, and obtaining an optimized
control table based on numerical optimization of the effective value according to the transmission power; offsetting the optimized effective value under the
half bridge mode with an empirical value, comparing the offset result with the optimized effective value under the
full bridge mode, and determining an ideal
mode switching boundary; obtaining an actual
mode switching boundary according to the ideal
mode switching boundary; and coordinating and controlling the converter based on the actual mode switching boundary and the optimized
control table. The control method can greatly reduce the switching loss of the converter, realize inductance current
impact-free connection between mode switching, and improve the overall operation efficiency under the premise of ensuring the
safe operation of the converter.