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Medientyp: E-Artikel; Sonstige Veröffentlichung Titel: Wear in wind turbine pitch bearings—A comparative design study Beteiligte: Schwack, Fabian [VerfasserIn]; Halmos, Fabian [VerfasserIn]; Stammler, Matthias [VerfasserIn]; Poll, Gerhard [VerfasserIn]; Glavatskih, Sergei [VerfasserIn] Erschienen: Chichester : Wiley, 2021 Erschienen in: Wind Energy 25 (2021), Nr. 4 ; Wind Energy Ausgabe: published Version Sprache: Englisch DOI: https://doi.org/10.15488/12501; https://doi.org/10.1002/we.2693 ISSN: 1095-4244 Schlagwörter: Outer diameters ; bearing design ; Wind turbines ; Downscaled experiment ; Experimental conditions ; individual pitch control ; Design studies ; Turbomachine blades ; Wind power ; Severe wears ; Oscillating motion ; Wear of materials ; Wind ; Learn+ ; blade bearing ; Bearing designs ; downscaled experiments Entstehung: Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen. Beschreibung: We tested two types of ball bearings with an outer diameter of 750 mm to learn more about the challenges of oscillating motions for pitch bearings. The experimental conditions are derived from aero-elastic simulations, long-term wind speed measurements and a scaling method that considers loads and pitch angles. As a result, the parameters relevant for pitch bearings are represented appropriately, and the findings are transferable to other bearing sizes. For the tested parameter sets, severe wear occurred for over 90% of the exposed contact areas after 12 500 oscillating cycles. Decreasing the number of cycles to 1250 leads to a mix of exposed areas with 13% severe wear, 32% mild wear and 55% no wear, with no apparent pattern. The results demonstrate that a comparatively small amount of consecutive cycles can lead to severe wear. A new type of bearing tested showed less wear for the selected operating conditions. © 2021 The Authors. Wind Energy published by John Wiley & Sons Ltd. Zugangsstatus: Freier Zugang Rechte-/Nutzungshinweise: Namensnennung - Nicht kommerziell (CC BY-NC)