Abstract
The modular multilevel converter (MMC) is attractive for medium- and high-power applications because of its high modularity, availability, and power quality. In this paper, the current ripple on the dc link of the three-phase MMC derived from the phase-shifted carrier-based pulse-width modulation scheme is analyzed. A control strategy is proposed for the current ripple elimination. Through the regulation of the phase-shifted angles of the carrier waves in the three phases of the MMC, the current ripple on the dc link of the three-phase MMC can be effectively eliminated. Simulations and experimental studies of the MMC were conducted, and the results confirm the effectiveness of the proposed current ripple elimination control.
| Original language | English |
|---|---|
| Journal | I E E E Transactions on Power Electronics |
| Volume | 30 |
| Issue number | 1 |
| Pages (from-to) | 284-296 |
| Number of pages | 13 |
| ISSN | 0885-8993 |
| DOIs | |
| Publication status | Published - Jan 2015 |
Keywords
- Capacitor voltage balancing
- Control strategy
- Modular multilevel converter (MMC)
- Ripple elimination