NDLI: Hybrid Cascaded Modular Multilevel Converter With DC Fault Ride-Through Capability for the HVDC Transmission System

Content Provider	IEEE Xplore Digital Library
Author	Rui Li Adam, G.P. Holliday, D. Fletcher, J.E. Williams, B.W.
Copyright Year	1986
Abstract	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.
Sponsorship	IEEE Power Engineering Society
Starting Page	1853
Ending Page	1862
Page Count	10
File Size	1965189
File Format	PDF
ISSN	08858977
Volume Number	30
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Circuit faults Capacitors Voltage control HVDC transmission Converters Topology Reactive power voltage-source-converter–high-voltage dc (VSC-HVDC) transmission system DC fault blocking dc fault tolerant hybrid cascaded modular multilevel converter (HC-MMC) soft restart
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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