DC Fault Ride Through of Multilevel Converters
File(s)
Accepted version
Author(s)
Chaffey, GP
Judge, PD
Merlin, MMC
Clemow, PR
Green, TC
Type
Conference Paper
Abstract
Modular Multilevel Converters (MMC) can provide
significant advantages for power transmission applications, how-
ever there are remaining challenges trading off DC fault response,
losses and controllability. Alternative multilevel converter topolo-
gies using combinations of full bridge and half bridge submodules
or series switches allow for competitive efficiency whilst retaining
control over the DC fault current. Several possible fault responses
are analysed to evaluate appropriate converter control actions.
Experimental results from a 60 submodule 15 kW demonstrator
are presented to validate the DC fault performance of the full
bridge MMC, the mixed stack MMC and the alternate arm
converter. It is shown that each can control the current into
a low impedance DC fault, and there no requirement to block
the semiconductor devices.
significant advantages for power transmission applications, how-
ever there are remaining challenges trading off DC fault response,
losses and controllability. Alternative multilevel converter topolo-
gies using combinations of full bridge and half bridge submodules
or series switches allow for competitive efficiency whilst retaining
control over the DC fault current. Several possible fault responses
are analysed to evaluate appropriate converter control actions.
Experimental results from a 60 submodule 15 kW demonstrator
are presented to validate the DC fault performance of the full
bridge MMC, the mixed stack MMC and the alternate arm
converter. It is shown that each can control the current into
a low impedance DC fault, and there no requirement to block
the semiconductor devices.
Date Acceptance
2016-07-01
Copyright Statement
© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EEZ1245616 (RMS96012)
EP/I013636/1
EP/I031707/1
Source
2016 IEEE Energy Conversion Congress and Exposition (ECCE)
Subjects
Science & Technology
Technology
Energy & Fuels
Engineering, Electrical & Electronic
Engineering
Publication Status
Accepted
Start Date
2016-09-18
Finish Date
2016-09-22
Coverage Spatial
Milwaukee