Combined Low-Bandwidth Platform Actuation and Floating Feedback Control for an Offshore Wind Turbine with an Ultraflexible Substructure | IEEE Conference Publication | IEEE Xplore

Combined Low-Bandwidth Platform Actuation and Floating Feedback Control for an Offshore Wind Turbine with an Ultraflexible Substructure


Abstract:

As many countries set goals to transition to cleaner power sources, offshore wind technology is an attractive option for power generation since it increases the available...Show More

Abstract:

As many countries set goals to transition to cleaner power sources, offshore wind technology is an attractive option for power generation since it increases the available area for wind turbines to be located. Floating offshore wind turbines (FOWTs) remain in the developmental stage with levelized cost of energy (LCOE) still higher than that of onshore or fixed-bottom offshore turbines. FOWTs are critical to achieving significant penetration of offshore wind in the U.S. because of the relatively deep water near most coastlines, making fixed-bottom turbines cost prohibitive in many areas. Because they are excited by both wind and waves and have more degrees of freedom than fixed-bottom turbines, FOWT operation can be substantially improved using advanced control design approaches. Keeping the system upright and minimizing platform motion is critical to maximize energy capture and reduce turbine loads to facilitate lower LCOE. This paper investigates the interdependencies of a parallel compensation blade pitch controller (referred to as a floating feedback controller) and platform control via low-bandwidth buoyancy can ballasting. Simulations are performed using the Ultra-flexible Smart FLoating Offshore Wind Turbine (USFLOWT) modeled with NREL’s OpenFAST simulation tool. Results show that static buoyancy can ballasting and floating feedback control can be used simultaneously to reduce platform motion and structural loads.
Date of Conference: 08-10 June 2022
Date Added to IEEE Xplore: 05 September 2022
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Conference Location: Atlanta, GA, USA

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