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    Wind farm stabilization by using DFIG with current controlled voltage source converters taking grid codes into consideration

    245849.pdf (1.117Mb)
    Access Status
    Open access
    Authors
    Okedu, K.
    Muyeen, S.M.
    Takahashi, R.
    Tamura, J.
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Okedu, K. and Muyeen, S.M. and Takahashi, R. and Tamura, J. 2012. Wind farm stabilization by using DFIG with current controlled voltage source converters taking grid codes into consideration. IEEJ Transactions on Power and Energy. 132 (3): pp. 251-259.
    Source Title
    IEEJ Transactions on Power and Energy
    DOI
    10.1541/ieejpes.132.251
    ISSN
    0385-4213
    School
    Department of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/44282
    Collection
    • Curtin Research Publications
    Abstract

    Recent wind farm grid codes require wind generators to ride through voltage sags, which means that normal power production should be re-initiated once the nominal grid voltage is recovered. However, fixed speed wind turbine generator system using induction generator (IG) has the stability problem similar to the step-out phenomenon of a synchronous generator. On the other hand, doubly fed induction generator (DFIG) can control its real and reactive powers independently while being operated in variable speed mode. This paper proposes a new control strategy using DFIGs for stabilizing a wind farm composed of DFIGs and IGs, without incorporating additional FACTS devices. A new current controlled voltage source converter (CC-VSC) scheme is proposed to control the converters of DFIG and the performance is verified by comparing the results with those of voltage controlled voltage source converter (VC-VSC) scheme. Another salient feature of this study is to reduce the number of proportionate integral (PI) controllers used in the rotor side converter without degrading dynamic and transient performances. Moreover, DC-link protection scheme during grid fault can be omitted in the proposed scheme which reduces overall cost of the system. Extensive simulation analyses by using PSCAD/EMTDC are carried out to clarify the effectiveness of the proposed CC-VSC based control scheme of DFIGs.

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