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Showing 1 to 4 of 4 for “"PhLEX"”.
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Proof of Concept Test for Dual-Axis Resonant Phase-Locked Excitation (PhLEX) Fatigue Testing Method for Wind Turbine Blades
… the dual-axis resonant Phase-Locked Excitation (PhLEX) fatigue test method. The PhLEX method fatigues wind turbine blades by loading both flapwise and lead-lag directions simultaneously at the leadlag fundamental frequency while controlling the phase between the directional loadings. The PhLEX …
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The Development of an Adaptive Control System for a Phase-Locked Excitation (PhLEX) Method for Advanced Wind Turbine Blade Fatigue Testing
<p>The National Renewable Energy Laboratory's (NREL) National Wind Technology Center (NWTC) provides the means necessary for advanced wind turbine blade testing. To improve on the current testing methods, a new testing method is being developed using the existing dual-axis fatigue testing …
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The Development of a Phase Locked Excitation Testing Method for Full‐Scale Wind Turbine Blades
… when compared to actual field gathered data. The PhLEX (Phase Locked Excitation System) testing method outlined herein utilizes resonant excitation system in order to reduce energy requirements, decrease test duration and improve overall loading distributed.</p>
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The Development of a Phase Locked Wind Turbine Blade Finite Element Model to Predict Loads and Deflections During Fatigue Testing
… and flap directions are allowed to vary. The PhLEX (Phase Locked Excitation System) under development utilizes a resonant excitation system in order to reduce hydraulic requirements, decrease test duration and improve distributed load matching. Control of the phase angle will allow for more …