| Title |
Carrier Based LFCPWM for Leakage Current Reduction and NP Current Control in 3-Phase 3-Level Converter |
| Authors |
Eun-Chul Lee ; Nam-Sup Choi |
| DOI |
https://doi.org/10.6113/TKPE.2022.27.5.446 |
| Keywords |
3-level converter; Leakage current; Neutral point current control; Carrier based PWM |
| Abstract |
This study proposes a carrier-based pulse width modulation (PWM) method for leakage current reduction and neutral point (NP) current control in a three-phase three-level converter, which is a carrier-based PWM version of the previously proposed low-frequency common mode voltage PWM. Three groups of space vectors with the same common mode voltage are used. When the averaged NP current needs to be positive or negative, the specific groups are employed to produce low-frequency common mode voltages. The validity of the proposed PWM method is verified through experiments. |