一种通过切换不同变压器等效匝比实现宽电压范围的高效双有源桥变换器

This article proposes a variable transformer equivalent turns ratio dual-active-bridge (VTDAB) dc–dc converter, which aims to increase the efficiency of the conventional dual-active-bridge (CDAB) dc–dc converter over a wide voltage range. By changing the driving logic of the secondary-side three bridge legs, the VTDAB controls the voltages across the dual transformers with two different turns rati...