一种基于IGCT串联的直流变压器及其最小回流功率注入准零开关损耗调制技术

An IGCT-series-based dc transformer (IGCT-series-DCT) and a quasi-zero switching loss modulation technique are proposed together to realize the direct access of single module DCT to medium voltage dc network in dc distribution network and dc pooling. Through IGCTs directly in series, IGCT-series-DCT has a medium voltage port. In order to prevent surge current in buffer capacitors used for voltage ...