The augmented trapezoidal alternate arm converter: a power-group augmented DC fault tolerant voltage source converter

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Title: The augmented trapezoidal alternate arm converter: a power-group augmented DC fault tolerant voltage source converter
Authors: Judge, PD
Merlin, MMC
Green, TC
Trainer, DR
Vershinin, K
Item Type: Conference Paper
Abstract: Achieving DC fault tolerance in modular multilevel converters requires the use of a significant number sub-modules which are capable of generating a negative voltage. This results in an increase in the number of IGBT devices in the current path, resulting in an increase in conduction losses within the converter. This paper introduces a thyristor augmented multilevel structure called a Power-Group, offering both negative voltage capability as well as a low conduction loss state, which can be used to construct high efficiency DC fault tolerant converters. When combined with the Alternate Arm Converter topology the power-group concept has been found to result in a converter topology that exhibits very low power-losses, high quality AC and DC current waveforms, while also achieving DC fault tolerance.
Issue Date: 25-Oct-2016
Date of Acceptance: 13-Sep-2016
URI: http://hdl.handle.net/10044/1/43291
Copyright Statement: © 2016 HVDC
Sponsor/Funder: Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EEZ1245616 (RMS96012)
EP/N030028/1
Conference Name: 2nd International Conference on High Voltage Direct Current
Publication Status: Published
Start Date: 2016-10-25
Finish Date: 2016-10-27
Conference Place: Shanghai, China
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering



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