考虑二倍频电流分布的两级式固态变压器直流母线多维设计

In a two-stage solid-state transformer cell, the grid power pulsates at the double-line frequency, yielding second-order harmonic current (SHC) across the unit. SHC into the dc–dc stage causes extra losses in the semiconductors and magnetics, resulting in reduced efficiency and lifetime at the gain of lower dc-link requirement. This article investigates how the dc-link design affects the SHC distr...