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    Quantitative Feedback Theory design of line current commutated HVDC control systems.

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    Journal Article (907.8Kb)
    Date
    2013
    Author
    Chetty, Leon.
    Ijumba, Nelson Mutatina.
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    Abstract
    Line Current Commutated (LCC) HVDC systems consists of uncertain plants. These uncertainties are result of changes/disturbances in the ac networks or in the LCC HVDC system itself. Further uncertainties can be introduced due to simplified system modelling techniques. Quantitative Feedback Theory is a frequency-domain technique that utilises the Nichols chart to achieve a robust design over a specified region of uncertainty. The Quantitative Feedback Theory design philosophy was applied to design the LCC HVDC control system parameters. The stable start-up and step responses of the LCC HVDC system, for varying ac system conditions, conclusively validate the Quantitative Feedback Theory design method of the LCC HVDC control system parameters.
    URI
    http://hdl.handle.net/10413/9267
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    • Research Articles (Electrical Engineering) [15]

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