| Title |
A Model Predictive Control Method of a Cascaded Flying Capacitor Multi-level Rectifier for Solid State Transformer for DC Distribution System |
| Authors |
Si-Hwan Kim ; Yeong-Hyeok Jang ; June-Sung Kim ; and Rae-Young Kim |
| DOI |
https://doi.org/10.6113/TKPE/2018.23.5.359 |
| Keywords |
DC distribution system ; Finite control set-model predictive control ; Flying capacitor rectifier ; Multi-level converter ; Solid state transformer |
| Abstract |
This study introduces a model predictive control method for controlling a cascaded flying capacitor multilevel rectifier used as an AC-DC rectifier of a solid-state transformer for DC distribution systems. The proposed method reduces the number of states that need to be considered in model predictive control by separately controlling input current, output DC link voltage, and flying capacitor voltage. Thus, calculation time is shortened to facilitate the level expansion of the cascaded flying capacitor multilevel rectifier. The selection of weighting factors did not present difficulties because the weighting factors in the cost function of the conventional model predictive control are not used. The effectiveness of the proposed method is verified through computer simulation using powersim and experiment. |