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    On the improvement of energy efficiency in existing fixed speed WECS

    Access Status
    Fulltext not available
    Authors
    Sugiarto, S.
    Islam, Syed
    Date
    2011
    Type
    Conference Paper
    
    Metadata
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    Citation
    Sugiarto, S. and Islam, S. 2011. On the improvement of energy efficiency in existing fixed speed WECS, in na (ed), 2011 International Conference on Electrical Machines and Systems (ICEMS 2011), Jul 20 2011. Beijing, China: The Korean Institute of Electrical Engineers.
    Source Title
    2011 International Conference on Electrical Machines and Systems, ICEMS 2011
    Source Conference
    2011 International Conference on Electrical Machines and Systems (ICEMS 2011)
    DOI
    10.1109/ICEMS.2011.6073421
    ISBN
    9781457710445
    School
    Department of Electrical and Computer Engineering
    URI
    http://hdl.handle.net/20.500.11937/66497
    Collection
    • Curtin Research Publications
    Abstract

    Due to simplicity and cost advantage, a significant opportunity of an existing and proposed wind farm are presented on fixed speed wind energy conversion systems employing induction machines. These direct connected machines offer converter-less operation but must be tightly controlled to synchronize voltage and frequency for grid connection. In motor technology, excitation control and speed control are well established to achieve better efficiency. This paper aims at explaining fixed speed wind generator efficiency improvement by controlling the generator terminal voltage using tandem control of excitation capacitors and OLTC transformer to match the required rotor speed of the WTG for maximum aerodynamic conversion efficiency. Results show that improvement in energy output is possible. This could translate to millions of additional MWh into the grid for medium to large turbines over their lifetime. © 2011 IEEE.

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