Journal
IEEE TRANSACTIONS ON POWER DELIVERY
Volume 30, Issue 4, Pages 1853-1862Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRD.2015.2389758
Keywords
DC fault blocking; dc fault tolerant; hybrid cascaded modular multilevel converter (HC-MMC); soft restart; voltage-source-converter-high-voltage dc (VSC-HVDC) transmission system
Categories
Funding
- Engineering and Physical Sciences Research Council (EPSRC) [EP/K006428/1]
- Engineering and Physical Sciences Research Council [DT/F006381/1, EP/K006428/1] Funding Source: researchfish
- EPSRC [EP/K006428/1, DT/F006381/1] Funding Source: UKRI
Ask authors/readers for more resources
A new hybrid cascaded modular multilevel converter for the high-voltage dc transmission system is presented. The half-bridge cells are used on the main power stage and the cascade full-bridge (FB) cells are connected to its ac terminals. The main power stage generates the fundamental voltages with quite low switching frequency, resulting in relatively low losses. The cascaded FB cells only attenuate the harmonics generated by the main power stage, without contribution to the power transfer. Thus, the energy-storage requirement of the cascaded FB cells is low and the capacitance of FB cells is reduced significantly. Due to the dc fault reverse blocking capability of the cascaded FB cells, the proposed topology can ride-through the pole-to-pole dc fault. In addition, the soft restart is achieved after the fault is eliminated, without exposing the system to significant inrush current. Besides, the average-value model of the proposed topology is derived, based on which the control strategy is presented. The results show the feasibility of the proposed converter.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available