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  <doc>
    <id>3021</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>IEEE Computer Society Press</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Generic modeling of a self-commutated multilevel VSC HVDC system for power system stability studies</title>
    <abstract language="eng">This paper provides a generic stability model of a self-commutated multilevel VSC (Voltage Source Converter) HVDC (High Voltage Direct Current) and its appropriate control. At first the approach of modeling depicts the independence of the AC and DC quantities and therefore two separate models - one for the AC and one for the DC side - can be figured out. The AC side model is developed in the dq frame out of the according differential equations. For the DC side no further transformation is required. Regarding the fact of balanced energy terms the two models can be merged. The consolidation of both models reveals a comprehensive large signal model of a multilevel based HVDC system which can be used for detailed analyses in power system stability studies. Due to the comparison of the generic stability model with an EMT (Electro-Magnetic Transient) HVDC model the consistence of the dynamic behavior is shown.</abstract>
    <parentTitle language="eng">2015 IEEE Applied Power Electronics Conference and Exposition</parentTitle>
    <identifier type="doi">10.1109/apec.2015.7104728</identifier>
    <identifier type="isbn">978-1-4799-6735-3</identifier>
    <author>Christoph Hahn</author>
    <author>Matthias Burkhardt</author>
    <author>Anatoli Semerow</author>
    <author>Matthias Luther</author>
    <author>Olaf Ruhle</author>
  </doc>
  <doc>
    <id>3022</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>Institute of Electrical and Electronics Engineers</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Generic modeling of a line commutated HVDC system for power system stability studies</title>
    <abstract language="deu">This paper will reveal a novel comprehensive approach for generic modeling and control design of line commutated HVDC systems. The model will be developed based on the essential HVDC equations and transfer functions. Due to comparing the generic model with an EMT (Electro-Magnetic Transient) HVDC model the consistence of the dynamic behavior will be shown. Furthermore modeling of additional HVDC system facilities like transformer tap-changers and AC filters will be annotated. Control design schemes for line commutated HVDC systems will be derived and the interactions of the controllers applied to the developed model will be investigated. © 2014 IEEE.</abstract>
    <parentTitle language="eng">Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference</parentTitle>
    <identifier type="isbn">978-1-4799-3655-7</identifier>
    <identifier type="doi">10.1109/TDC.2014.6863308</identifier>
    <author>Christoph Hahn</author>
    <author>Anatoli Semerow</author>
    <author>Matthias Luther</author>
    <author>Olaf Ruhle</author>
  </doc>
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