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Title:
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LMI-based Robust LPV Control of Wind Turbines: Literature Review and Problem Statement
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Author(s):
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Published by:
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Publication date:
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ECN
Wind Energy
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30-10-2014
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ECN report number:
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Document type:
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ECN-E--14-036
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ECN publication
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Number of pages:
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Full text:
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41
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Download PDF
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Abstract:
Wind power has proven to be one of the most versatile forms of renewable energy.
In a similar fashion, offshore wind is emerging as the most promising method of
addressing the increased power production requirements, given the massive potential of wind at sea. The Dutch consortium for innovation in offshore wind energy
TKI Wind op Zee performs active research with the main goal of allowing higher penetration of offshore wind power. D4REL (Design for Reliable Power Performance) is
one such research project which, within the consortium, is coordinated by the Energy
Research Centre of the Netherlands (ECN). Within D4REL, ECN works in close
cooperation with TU Delft and have established a definite goal of developing novel
control tools for the reduction of uncertainty in the design and operation of offshore
wind farms.
Offshore wind turbines are subject to large variations in terms of their physical parameters.
Aerodynamic performance can change dramatically based on weather
conditions and the passage of time. Modal characteristics for bottom-supported
structures experience considerable variations due to environmental conditions such
as rise and fall of sea levels, formation of ice around the turbine tower and scour.
Control systems designed only based on an ideal fixed-parameter model will, therefore,
perform suboptimally in such situations. In this literature review attention is
first given to introducing the practicalities associated with the mentioned problem
into a model structure. A framework for the robust and linear parameter-varying
control theory is then established. Up-to-date efforts in wind turbine control are
described in strict relation to the goals of the D4REL project. Subsequently, a new
control problem is formulated and a research direction towards addressing it is proposed.
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