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Title Dynamic response of a 330-kW horizontal axis wind turbine generator
Creator/Author Wehrey, M. ; Redmond, I. ; Anderson, C. ; Jamieson, P.
Publication Date1988 Feb 01
OSTI IdentifierOSTI ID: 5060652; DE88001136
Report Number(s)SERI/STR-217-3203
DOE Contract NumberAC02-83CH10093
Resource TypeTechnical Report
Research OrgSolar Energy Research Inst., Golden, CO (USA)
Subject170602 -- Wind Energy Engineering-- Turbine Design & Operation; WIND TURBINES-- DYNAMIC LOADS;WIND TURBINES-- PERFORMANCE TESTING; AIR FLOW;CALIBRATION;DATA ACQUISITION SYSTEMS;FLOW STRESS;FLOW VISUALIZATION;FREQUENCY RESPONSE TESTING;STRAINS;TURBINE BLADES
Related SubjectFLUID FLOW;GAS FLOW;MACHINERY;STRESSES;TESTING;TURBINES;TURBOMACHINERY
Description/Abstract This report provides the results of a combined experimental and theoretical study of the dynamic response of a Howden 330/26 wind turbine generator.^The work was undertaken to extend the current knowledge on the dynamic response of wind turbines, and to better understand 3-dimensional air-flow patterns.^Tests involved performance and dynamic strain measurements on one of the three rotor blades and on the structural members of the wind turbine and its tower.^Also, detailed measurements of the ambient wind inflow to the turbine were made using a vertical plane array of anemometers.^The results of the tests were then compared with model predictions.^In general, structural loads computed using the model were lower than their measured counterparts.^Blade and mean flapwise loads, measured using time averaging, agreed reasonably with those derived from machine start/stop sequences.^Tower steady bending loads, also measured from start/stop sequences, agreed fairly well with each other and with theoretical predictions using the dynamic response model.^Power and wind speed are also much as predicted theoretically.^Flow visualization was also conducted, where photographs were taken of the operating blade and correlated with real-time data records.^Binned separation data produced convincing correlations.^The measured separation point data were processed to yield lift coefficient values, which were compared with similarly processed separation data obtained from wind tunnel tufting studies.^Stall appeared to be delayed on the blade, probably due to radial flow.^11 refs., 65 figs., 18 tabs.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 102
AvailabilityNTIS, PC A06/MF A01;1.
System Entry Date2001 May 13

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