Development of a Mechanical Passive Pitch System for a 500W Horizontal Axis Wind Turbine

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The goal of this paper is to design, analyze, manufacture, and test a mechanical passive pitch mechanism for a small horizontal axis wind turbine. Several pitching concepts were investigated in the wind industry and related fields before ultimately deciding on a centrifugal governor design concept in a pitch-to-stall configuration. Inertial and aerodynamic models were developed in order to predict steady-state performance and an optimization routine was created to optimize the pitch mechanism configuration subject to manufacturing constraints. Dynamic modeling in HAWC2 validated the steady-state design code, aeroelastic simulations were performed in turbulent wind conditions to simulate the pitch system dynamics. Physical testing of the full turbine was not completed, however the hub sub-assembly was tested on its own to validate the passive pitch characteristics and showed good agreement with the simulation tools developed.
Original languageEnglish
Title of host publication35th Wind Energy Symposium
Number of pages16
Publication date2017
ISBN (Print)9781624104565
Publication statusPublished - 2017


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