Summary
This paper reviews controllable current source converter technologies enabled by Reverse
Read more Read lessBlocking Integrated Gate Commutated Thyristors (RB-IGCTs) as an alternative pathway for
Ultra-High Voltage Direct Current (UHVDC) transmission amidst increasing renewable penetration and weakening AC grid conditions. Two distinct RB-IGCT-based technical routes are examined: the Hybrid Commutated Converter (HCC), a topology derived from conventional Line Commutated Converters by introducing RB-IGCT valve strings, and the
IGCT based Current Source Converter (IGCT-CSC), an architecture that integrates AC-side capacitors and modulation to achieve fully self-commutated operation. Topology, control, and key technical results are reviewed, with a comparative assessment highlights that, while both routes expand the application envelope of current source-based HVDC technologies, series device coordination and transient stress management remain the key challenges to broad
UHVDC deployment.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B4_11462_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | China, People's Republic of |
| Study committees | |
| File size | 2 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
ZENG Rong - Tsinghua University; TANG Guangfu - Beijing Huairou Laboratory; RAO Hong - Electric Power Research Institute, CSG; SHAN Yunhai - Beijing Huairou Laboratory; LI Song - Beijing Huairou Laboratory; CAI Wantong - Electric Power Research Institute, CSG; JIANG Taosha - Beijing Huairou Laboratory
Keywords
Reverse Blocking IGCT (RB-IGCT), Hybrid Commutated Converter (HCC), UHVDC, Commutation Failure
