| Title |
Performance Test Circuit and Control Method for Submodule of MMC-HVDC System |
| Authors |
Kwang-Rae Jo ; Byuong-Jun Seo ; Kwon-Sik Park ; Hak-Soo Kim ; Jin-Yong Heo ; Eui-Cheol Nho |
| DOI |
10.6113/TKPE.2019.24.6.452 |
| Keywords |
HVDC(High Voltage Direct Current); MMC(Modular Multi-level Converter); Sub-module test |
| Abstract |
This study proposes a new test circuit and control method for the submodules of modular multilevel converter (MMC)-based HVDC systems. The test current of conventional submodule test circuits cannot provide the DC offset components or may have some distortion in the linearized current with the DC offset. The proposed scheme can provide not only the DC component but also linearized current without distortion. Therefore, the submodule test current waveform is relatively similar to that of a real submodule consisting of an MMC-based HVDC system. The validity of the proposed circuit and control method is verified through a simulation and experiment. |