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    Stability Analysis for Multiple Voltage Source Converters Connected at a Bus

    Access Status
    Fulltext not available
    Authors
    Ghosh, Arindam
    Ledwich, G.
    zare, F.
    Majumder, R.
    Date
    2011
    Type
    Conference Paper
    
    Metadata
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    Citation
    Ghosh, A. and Ledwich, G. and zare, F. and Majumder, R. 2011. Stability Analysis for Multiple Voltage Source Converters Connected at a Bus, in - (ed), ENERGY 2011 : The First International Conference on Smart Grids, Green Communications and IT Energy-aware Technologies, May 22 2011. Venice, Italy: International Academy, Research, and Industry Association ( IARIA ).
    Source Title
    First International Conference on Smart Grids, Green Communications and IT Energy-aware Technologies 2011 (ENERGY 2011)
    Source Conference
    ENERGY 2011 : The First International Conference on Smart Grids, Green Communications and IT Energy-aware Technologies
    ISBN
    978-1-61208-136-6
    URI
    http://hdl.handle.net/20.500.11937/2665
    Collection
    • Curtin Research Publications
    Abstract

    This paper develops a tool for the stability analysis when multiple voltage controlled converters are connected to a distribution bus. In particular, the analysis is applicable to voltage source converters (VSCs) and has been extended to consider current control as well as voltage control. It is assumed that each VSC is controlled by a state feedback linear quadratic regulator (LQR) based switching design. A suitable model of the converter is first developed by including the state feedback gains. The model is then extended to incorporate parallel operation of two VSCs, connected to a bus. To consider autonomous operation, the power sharing arrangements without any explicit communication, i.e., droopcontrollers are incorporated in the model. Finally, a linearized model of the system is developed for Eigen analysis. It has been shown that the system response predicted by the developed model matches PSCAD simulation results very closely, thus confirming that the model developed can be used as an analytical tool.

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