Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Assessment and modelling of switching technologies for application in HVDC-circuit breakers
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
2011 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

A key element for future DC-grids is a DC circuit breaker that in case of a short circuit fault reliably can turn off a short circuit current. AC circuit breakers are well known components that has been in use for a long time in AC-grids. The AC circuit breaker is designed to interrupt the current at its natural current zero crossings. In DC grids such does not exists, therefore AC breakers can not be directly applied in DC grids. Different concepts and technologies to solve this problem is available. In this work three different DC-Circuit breaker topologies that show good potential in the medium voltage range has been modeled namely

• Resonance Hybrid DC Circuit Breaker

• Active Turn-off Hybrid DC Circuit Breaker

• Snubbered Hybrid DC Breaker

The three different breaker concepts has been analyzed and compared for their ability to limit short circuit current. The comparison shows that the Snubbered DC Circuit breaker has the best short circuit current limiting performance. The maximum short circuit current during the turn-off process is 20 % lower than for the other two DC breaker topologies which shows the aproximately the same sort circuit current limiting performance.

Place, publisher, year, edition, pages
2011. , 74 p.
Series
EES Examensarbete / Master Thesis, XR_EE-ETK 2011:001
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-53482OAI: oai:DiVA.org:kth-53482DiVA: diva2:470146
Educational program
Master of Science in Engineering - Electrical Engineering
Uppsok
Technology
Examiners
Available from: 2012-01-19 Created: 2011-12-28 Last updated: 2012-03-15Bibliographically approved

Open Access in DiVA

fulltext(1906 kB)913 downloads
File information
File name FULLTEXT01.pdfFile size 1906 kBChecksum SHA-512
ee375eeeca2cdd1ef891e973a14f201f21bae810fdc839dddffdb0af468aed248d6257a603574dcc668c2dd5c5f9fe47b3df11dafa2aefcbd5ae701b7af5758a
Type fulltextMimetype application/pdf

By organisation
Electromagnetic Engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 913 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 409 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf