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박무열(Park Moo Yeol),은성용(Eun Sung Yong),김석현(Kim Seock Hyun) 강원대학교 산업기술연구소 2004 産業技術硏究 Vol.24 No.1
A reduced structure model of a wind turbine generator is designed and manufactured. Mode data are obtained by modal testing and analytical method. Vibration response is measured and investigated under various speed condition by using a waterfall plot. Possibility of severe resonance is observed and the mechanism is explained by using the mode data. Simplified theoretical model gives the 1st resonance frequency of wind turbine structure model. The theoretical model can be applied in the design stage of the wind turbine structure to avoid the severe resonance problem.
김석현(Seokhyun Kim),최승훈(C.X.Cui),박무열(Moo Yeol Park) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
A theoretical model based on Rayleigh-Ritz method is proposed to predict the resonance frequency of a wind turbine(WI) tower structure supported by guy cables. Admissible functions are introduced for tower and cable elements. In order to verify the validity of the theoretical model, a reduced WI tower model is manufactured and tested. On the test model, frequency and mode data are determined by the finite element analysis and measurement. Theoretical analysis results are compared with those by numerical analysis and measurement. By the parametric study using the theoretical model, it is investigated how the cable tension and cable elasticity influence the resonance frequency of the WI tower structure.
박무열,은성용,김석현 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.B
A reduced structure model of a wind turbine generator is designed and manufactured. Mode data are obtained by modal testing and analytical method. Vibration response is measured and investigated under various speed condition by using a waterfall plot. Possibility of severe resonance is observed and the mechanism is explained by using the mode data. Simplified theoretical model gives the 1st resonance frequency of wind turbine structure model. The theoretical model can be applied in the design stage of the wind turbine structure to avoid the severe resonance problem.