Abstract
Multilevel diode-clamped converters with more than three levels cannot maintain voltage balance in the DC-link capacitors for some operating conditions due to the existence of DC currents in the middle points. Since capacitors arc either completely charged or discharged for those conditions, this circumstance severely limits practical application of these converters. The limit explored in this work is that the four-level converter cannot achieve voltage balance. Proper redundant vectors are selected in the space-vector diagram so that a quadratic parameter related to the currents in the middle points is minimized.
| Original language | English |
|---|---|
| Pages | 898-902 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2002 |
| Externally published | Yes |
| Event | Proceedings of the 2002 28th Annual Conference of the IEEE Industrial Electronics Society - Sevilla, Spain Duration: Nov 5 2002 → Nov 8 2002 |
Conference
| Conference | Proceedings of the 2002 28th Annual Conference of the IEEE Industrial Electronics Society |
|---|---|
| Country/Territory | Spain |
| City | Sevilla |
| Period | 11/5/02 → 11/8/02 |
ASJC Scopus Subject Areas
- Control and Systems Engineering
- Electrical and Electronic Engineering
Keywords
- Four-level inverter
- Multilevel inverter
- Nearest vector
- Parameter minimization
- Passive front ends
- Space-vector modulation
- Voltage balance