Abstract
This paper describes a control approach that allows the cell capacitors of the full-bridge modular multilevel converter (FB-MMC) to be controlled independent of dc link voltage. Also the control approach offers the possibility of operating the FB-MMC from bi-polar dc link voltages; thus, creating new possibilities for building generic hybrid dc grids with reversible dc link voltage, where conventional line commutated current source converters can operate in conjunction with voltage source converters. Additionally the control approach improves dc fault ride-through of the FB-MMC compared with existing approaches. This is achieved by active control of the arm currents and cell capacitor voltages, and exploitation of the FB-MMC redundant switch states. FB-MMC operation with reversible DC link voltage and decoupled control of the cell capacitor voltages from the dc link voltage are demonstrated using simulations.
| Original language | English |
|---|---|
| Title of host publication | Electrical Power and Energy Conference (EPEC), 2015 IEEE |
| Place of Publication | Piscataway |
| Publisher | IEEE |
| Pages | 326 - 331 |
| Number of pages | 6 |
| ISBN (Print) | 9781479976621 |
| DOIs | |
| Publication status | Published - 26 Oct 2015 |
| Event | 2015 Electrical Power and Energy Conference - London Convention Centre, London, Ontario, Canada Duration: 26 Oct 2015 → 28 Oct 2015 http://epec2015.ieee.ca/ |
Conference
| Conference | 2015 Electrical Power and Energy Conference |
|---|---|
| Abbreviated title | EPEC 2015 |
| Country/Territory | Canada |
| City | London, Ontario |
| Period | 26/10/15 → 28/10/15 |
| Internet address |
Keywords
- dc fault ride-through capability
- dc short circuit proof
- high-voltage DC transmission systems
- half and full bridge modular multilevel converters
- line commutated converter
- bridge circuits
- electric current control
- power grids
- power system control
- power system faults
- power system reliability
- redundancy
- switching convertors
- voltage control