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The modular multilevel converter (MMC) has become the most attractive converter technology for medium/high-power applications, specifically for high-voltage dc (HVdc) transmission systems. One of the technical challenges associated with the operation and control of the MMC-based system is to precharge the submodule (SM) capacitors to their nominal voltage during the startup process. In this paper,...
In order to reduce the computational complexity of conventional single-phase multilevel space vector pulsewidth modulation (SVPWM) strategy and resource consumption of micro controller chip, a simplified SVPWM strategy adopted for single-phase 5-L/7-L converter is proposed. The proposed strategy simplifies the calculation of single-phase 5-L/7-L SVPWM to single-phase 3-L SVPWM by dividing the voltage...
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