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Title: Influence of wind turbine design parameters on linearized physics-based models in OpenFAST

Journal Article · · Wind Energy Science (Online)

While most physics involved in wind energy are nonlinear, linearization of the underlying nonlinear wind system equations is often important for understanding the system response and exploiting well-established methods and tools for analyzing linear systems. Linearized models are important for eigenanalysis (to derive structural natural frequencies, damping ratios, and mode shapes), controls design (based on linear state-space models), etc. In controls co-design, wherein methods often rely on linearized time-domain models of the physics, the physical structure (often called the plant) and controller are designed and optimized concurrently, so it is important to understand how changes to the physical design affect the linearized system. This work summarizes efforts done to understand the impact of design parameter variations in the physical system (e.g., mass, stiffness, geometry, and aerodynamic and hydrodynamic coefficients) on the linearized system using OpenFAST.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AC36-08GO28308; WEIS: A Tool Set to Enable Controls Co-Design of Floating Offshore Wind Energy Systems
OSTI ID:
1854394
Alternate ID(s):
OSTI ID: 1863943
Report Number(s):
NREL/JA-5000-82662; MainId:83435; UUID:952f26e9-35f2-46cd-9733-c8a32dc009b9; MainAdminID:64336
Journal Information:
Wind Energy Science (Online), Vol. 7, Issue 2; ISSN 2366-7451
Publisher:
Copernicus PublicationsCopyright Statement
Country of Publication:
United States
Language:
English