| Title |
A Study on the Compensation Method for Unbalance Parallel Operation of Parallel Connected Thyristor Dual Converters using Circulating Current |
| Authors |
Sung-An Kim ; Sung-Woo Han ; Dong-Ok Moon ; Young-Woo Kim ; Chang-Hee Lee ; Yun-Hyun Cho |
| DOI |
10.6113/TKPE/2016.21.6.473 |
| Keywords |
Circulating current; Firing angle; Parallel operation; Sharing current control; Thyristor dual converter |
| Abstract |
This study proposes a performance improvement for parallel-connected thyristor dual converters using a circulating current with an unbalanced parallel operation compensator. The proposed control method determines a variable reference value for the voltage PI controller according to voltage error at firing angle control applied to a difference current control. This method uses circulating current control to maintain a stable voltage and excellent current response during parallel operation. The effectiveness of the proposed control is verified with a simulation and an experiment based on the comparison of the performance of the proposed control method with other conventional methods. |