一种采用Y-Δ连接变压器的三相双向AC/DC变换器

This paper proposes a three-phase bidirectional ac/dc converter with Y-Δ connected transformers. The converter achieves both buck-boost ac/dc bidirectional conversion and electrical isolation with the single-stage structure. By introducing three dc-dc transformers, the total power is distributed and the current stress of the rectifier stage decreases. The Y-Δ connected transformers provide extra s...