Modular multilevel converter composite submodule topology and control
| Autor: | Jianpo Zhang, Chang Jiang, Yanan Han |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
HVDC power convertors
circuit breakers capacitors network topology fault currents power convertors power transmission faults HVDC power transmission short-circuit currents fault diagnosis voltage control switching convertors improved composite SM topology full-bridge SM multilevel capacitor storage structures different operation modes capacitor voltage balancing control DC-side short-circuit fault suppression characteristics control strategies modular multilevel converter composite submodule topology DC transmission technical problem different location study first analyses three possible suppression schemes AC/DC circuit breaker bridge arm damper MMC submodule topologies SM topologies DC fault current self-blocking capability Engineering (General). Civil engineering (General) TA1-2040 |
| Zdroj: | The Journal of Engineering (2019) |
| Druh dokumentu: | article |
| ISSN: | 2051-3305 |
| DOI: | 10.1049/joe.2018.8660 |
| Popis: | The DC-side short-circuit fault suppression of modular multilevel converter (MMC) applied to DC transmission has been a technical problem. According to the different location of cutting off fault current, this study first analyses three possible suppression schemes: AC/DC circuit breaker, bridge arm damper, and MMC submodule (SM) topologies and their respective features. Then, characteristics of SM topologies with DC fault current self-blocking capability are summarised, and an improved composite SM topology is designed based on the full-bridge SM and multilevel capacitor storage structures. The suppression characteristics of the proposed topology under different operation modes, capacitor voltage balancing control during blocking, and self-starting process are also studied. Finally, a simulation model is built in the PSCAD/EMTDC to verify the DC-side short-circuit fault suppression characteristics and control strategies. |
| Databáze: | Directory of Open Access Journals |
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