A Study on Robust Control of Three Phase AC/DC Converter under Unbalanced Grid Voltage
This thesis presents “a robust control technique for three-phase AC/DC converter under unbalanced grid conditions”. The control method consists of inner-loop robust grid-current control and outer-loop proportional integral control for constant voltage (CV) control. A dual-current control for the inner-loop positive and negative sequence is employed to eliminate the unbalanced current caused by the grid…