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

Ahmed, K.H.; Aboushady, A.A.

Authors

K.H. Ahmed

A.A. Aboushady



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 ompared 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.

Citation

AHMED, K.H. and ABOUSHADY, A.A. 2014. Modified half-bridge modular multilevel converter for HVDC systems with DC fault ride-through capability. In Proceedings of the 40th IEEE Industrial Electronics Society annual conference (IECON 2014), 30 October - 01 November 2014, Dallas, USA. Piscataway: IEEE [online], pages 4676-4682. Available from: https://doi.org/10.1109/IECON.2014.7049207

Conference Name 40th IEEE Industrial Electronics Society annual conference (IECON 2014)
Conference Location Dallas, USA
Start Date Oct 29, 2014
End Date Nov 1, 2014
Acceptance Date Jun 30, 2014
Online Publication Date Nov 1, 2014
Publication Date Feb 26, 2015
Deposit Date Jul 20, 2016
Publicly Available Date Jul 20, 2016
Print ISSN 1553-572X
Publisher Institute of Electrical and Electronics Engineers
Pages 4676-4682
Series ISSN 1553-572X
DOI https://doi.org/10.1109/IECON.2014.7049207
Keywords Modified halfbridge modular multilevel converter; HVDC systems; DC faults
Public URL http://hdl.handle.net/10059/1543

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