| Title |
Generalized Circulating Current Control Method in Parallel Three-Phase Boost Converters |
| Authors |
Chang-Soon Lim ; 李Kui-Jun Lee ; Rae-Young Kim ; Dong-Seok Hyun |
| DOI |
10.6113/TKPE/2011.16.3.250 |
| Keywords |
Three-phase coupled inductor; Circulating current; Parallel three-phase boost converters. |
| Abstract |
This paper analyzes characteristic of the three-phase coupled inductor connected to ac source to effectively mitigate the high-frequency circulating current generated in parallel three-phase boost converters. The three-phase coupled inductor analysis presented in this paper uses the three-phase coupled inductor structure and voltage equations. Based on this analysis, the three-phase coupled inductor is added to the conventional low-frequency averaged model. As a result, the novel averaged model which can reduce the low and high-frequency circulating current simultaneously is developed. Using the zero-sequence component of the novel averaged model, each total inductance to the circulating current of the three-phase coupled inductor and line inductor can be obtained. Simulation and experiment results verify the usefulness of three-phase coupled inductor in parallel three-phase boost converters. |