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Adaptive Control of In-Stream Ocean Current Turbines for Load Reduction

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Date Issued:
2016
Summary:
The ocean currents off Florida are a renewable and energy dense resource capable of providing Florida with about 25% of its electricity needs. This current is strongest at the sea surface and decreases in strength with depth such that the individual rotor blades on ocean current turbines (OCT) deployed to harness this resource will operate in stronger currents when positioned vertically upwards than when vertically downwards. This current shear will induce cyclic loadings on the rotor blades unless active control is used to reduce these load variations. A direct adaptive individual blade pitch controller is implemented into a numerical model simulating an OCT operating in the Gulf Stream. The adaptive controller is analyzed with the OCT simulated in both stationary and moored configurations. The results concluded that the IBP controller reduced the amplitude of the loads in the stationary and moored simulations by 91.18% and 92.3%, respectively.
Title: Adaptive Control of In-Stream Ocean Current Turbines for Load Reduction.
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Name(s): Lee, Louis M.
VanZwieten, James H.
Office of Undergraduate Research and Inquiry
Type of Resource: text
Genre: Poster
Date Created: 2016
Date Issued: 2016
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Florida
Physical Form: application/pdf
Extent: 1 p.
Language(s): English
Summary: The ocean currents off Florida are a renewable and energy dense resource capable of providing Florida with about 25% of its electricity needs. This current is strongest at the sea surface and decreases in strength with depth such that the individual rotor blades on ocean current turbines (OCT) deployed to harness this resource will operate in stronger currents when positioned vertically upwards than when vertically downwards. This current shear will induce cyclic loadings on the rotor blades unless active control is used to reduce these load variations. A direct adaptive individual blade pitch controller is implemented into a numerical model simulating an OCT operating in the Gulf Stream. The adaptive controller is analyzed with the OCT simulated in both stationary and moored configurations. The results concluded that the IBP controller reduced the amplitude of the loads in the stationary and moored simulations by 91.18% and 92.3%, respectively.
Identifier: FA00005582 (IID)
Subject(s): College students --Research --United States.
Held by: Florida Atlantic University Libraries
Sublocation: Digital Library
Persistent Link to This Record: http://purl.flvc.org/fau/fd/FA00005582
Restrictions on Access: Author retains rights.
Owner Institution: FAU