基于级联H桥的光伏固态变压器直流母线电压平衡的新型高频脉冲置换方案

The cascaded H-bridge (CHB) based solid-state transformer is an attractive solution to integrate large-scale photovoltaic (PV) power plants into medium-voltage grids with high power quality in a controllable and scalable manner. The dc-link voltage balance of the CHB is critical to the lifespan of capacitors and semiconductor devices, grid-current quality, and the system's stable operation. Howeve...