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Constrained power reference control for wind turbines

delete2021-12-13
delete19
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OA
AI
D
Daniel Zalkind *
M
Marco M. Nicotra
L
Lucy Y. Pao
DOI:10.1002/we.2705delete
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Abstract

Abstract

En 中文
The cost of wind energy can be reduced by controlling the power reference of a turbine to increase energy capture, while maintaining load and generator speed constraints. We apply standard torque and pitch controllers to the direct inputs of the turbine and use their set points to change the power output and reduce generator speed and blade load transients. A power reference controller increases the power output when conditions are safe and decreases it when problematic transient events are expected. Transient generator speeds and blade loads are estimated using a gust measure derived from a wind speed estimate. A hybrid controller decreases the power rating from a maximum allowable power. Compared to a baseline controller, with a constant power reference, the proposed controller results in generator speeds and blade loads that do not exceed the original limits, increases tower fore-aft damage equivalent loads by 1%, and increases the annual energy production by 5%.
Keywords:
condition monitoring
design constraints
extreme event control
power boost
power control
transient estimation
wind energy
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Wind Energy cover
Wind Energy
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University of Colorado System cover
University of Colorado System
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