Reliability analysis of a power electronic integrated generator for wind energy conversion systems
Lawanson, Isaac
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https://hdl.handle.net/2142/115788
Description
Title
Reliability analysis of a power electronic integrated generator for wind energy conversion systems
Author(s)
Lawanson, Isaac
Issue Date
2022-04-29
Director of Research (if dissertation) or Advisor (if thesis)
Dominguez-Garcia, Alejandro
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Reliability
Off-shore wind energy
Abstract
This thesis presents a novel design for off-shore wind turbines. Reliability analysis of AC to DC power converter architectures that are utilized in this wind energy conversion system is performed with Markov reliability and availability modeling. The three architectures under investigation are: the baseline, based on a sole active rectifier; the proposed, comprising an active rectifier and three passive rectifiers; and the proposed outfitted with electromechanical bypass relay switches. The models are used to determine reliability, system failure rate, and availability of all three architectures. Sensitivity analysis of various component failure and repair rates on the reliability metrics just mentioned is also performed. An averaged high-order model of the wind-turbine is presented and reduced using singular perturbation analysis. The reduced-order model is used to calculate the expected power output of the off-shore wind turbine.
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