Modified half-bridge modular multilevel converter for HVDC systems with DC fault ride-through capability

K.H. Ahmed; A.A. Aboushady

doi:10.1109/IECON.2014.7049207

Modified half-bridge modular multilevel converter for HVDC systems with DC fault ride-through capability

K.H. Ahmed, A.A. Aboushady

Electrical Power Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

One of the main challenges of voltage source converter based HVDC systems is DC faults. In this paper, two different modified half-bridge modular multilevel converter topologies are proposed. The proposed converters offer a fault tolerant against the most severe pole-to-pole DC faults. The converter comprises three switches or two switches and 4 diodes in each cell, which can result in less cost and losses compared to the full-bridge modular multilevel converter. Converter structure and controls are presented including the converter modulation and capacitors balancing. MATLAB/SIMULINK simulations are carried out to verify converter operation in normal and faulty conditions.

Original language	English
Title of host publication	IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society
Publisher	IEEE
Pages	4676-4682
Number of pages	7
ISBN (Electronic)	978-1-4799-4032-5
ISBN (Print)	9781479940325
DOIs	https://doi.org/10.1109/IECON.2014.7049207
Publication status	Published - 26 Feb 2015

Keywords

capacitors
topology
circuit faults
power conversion
modulation
bridge circuits

Documents and Links

10.1109/IECON.2014.7049207

Ahmed, K.H., et al (2014) Modified half-bridge modular multilevel converter for HVDC systems with DC fault ride-through capability
This is the accepted author manuscript of a conference contribution published by IEEE. Available at http://ieeexplore.ieee.org/document/7049207/ Copyright: IEEE
Accepted author manuscript, 0.99 MB

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Cite this

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N2 - One of the main challenges of voltage source converter based HVDC systems is DC faults. In this paper, two different modified half-bridge modular multilevel converter topologies are proposed. The proposed converters offer a fault tolerant against the most severe pole-to-pole DC faults. The converter comprises three switches or two switches and 4 diodes in each cell, which can result in less cost and losses compared to the full-bridge modular multilevel converter. Converter structure and controls are presented including the converter modulation and capacitors balancing. MATLAB/SIMULINK simulations are carried out to verify converter operation in normal and faulty conditions.

AB - One of the main challenges of voltage source converter based HVDC systems is DC faults. In this paper, two different modified half-bridge modular multilevel converter topologies are proposed. The proposed converters offer a fault tolerant against the most severe pole-to-pole DC faults. The converter comprises three switches or two switches and 4 diodes in each cell, which can result in less cost and losses compared to the full-bridge modular multilevel converter. Converter structure and controls are presented including the converter modulation and capacitors balancing. MATLAB/SIMULINK simulations are carried out to verify converter operation in normal and faulty conditions.

KW - capacitors

KW - topology

KW - circuit faults

KW - power conversion

KW - modulation

KW - bridge circuits

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