The lack of aerodynamic damping of wind turbine blades in the edgewise direction causes larger dynamic responses and lowers the reliability. As blades become longer, edgewise fatigue loading increases rapidly. To mitigate the blade edgewise vibration, structural control techniques using a tuned mass damper (TMD) are applied in this paper. The “TMD” module in FASTv8 was upgraded to enable the high-fidelity simulation of structural control of the blade response. With the developed tool, the optimal parameters and generalized design formulas were established through a parametric study. Also, the control effect of the optimal blade-TMD on reducing fatigue and extreme loads of two different multi-megawatts turbine blades is investigated. Fully-coupled non-linear time marching simulations were conducted by running key design load cases (DLCs) with site-specific meteorological conditions. The results provide insight into the potential benefits and impacts of passive structural control to reduce the fatigue and extreme loads of turbine blades.
AksencerTAydogduM (2018) Vibration of a rotating composite beam with an attached point mass. Composite Structures190: 1–9.
2.
ArriganJPakrashiVBasuB, et al. (2011) Control of flapwise vibrations in wind turbine blades using semi-active tuned mass dampers.Structural Control and Health Monitoring18(8): 840–851.
3.
BakCZahleFBitscheR, et al. (2013) The DTU 10-MW reference wind turbine. In Danish Wind Power Research2013.
4.
BirG (2005) User’s Guide to BModes (Software for Computing Rotating Beam-Coupled Modes) (No. NREL/TP-500-39133). Golden, CO: National Renewable Energy Lab.
5.
ChenJLiuYBaiX (2015) Shaking table test and numerical analysis of offshore wind turbine tower systems controlled by TLCD.Earthquake Engineering and Engineering Vibration14(1): 55–75.
6.
ColwellSBasuB (2009) Tuned liquid column dampers in offshore wind turbines for structural control.Engineering Structures31(2): 358–368.
7.
CoudurierCLepreuxOPetitN (2015) Passive and semi-active control of an offshore floating wind turbine using a tuned liquid column damper.IFAC-PapersOnLine48(16): 241–247.
8.
CoudurierCLepreuxOPetitN (2018) Modelling of a tuned liquid multi-column damper. Application to floating wind turbine for improved robustness against wave incidence. Ocean Engineering165: 277–292.
9.
DinhVNBasuB (2015) Passive control of floating offshore wind turbine nacelle and spar vibrations by multiple tuned mass dampers. Structural Control and Health Monitoring22(1): 152–176.
10.
HaymanGJBuhlJr, M (2012) Mlife users guide for version 1.00 (vol. 74). Golden, CO: National Renewable Energy Laboratory, p. 112.
11.
IEC 61400 3 (2008) Ed.1: wind turbines part 3: design requirements for offshore wind turbines. Technical report, The Netherlands: International Electrotechnical Commission.
12.
JonkmanBJonkmanJ (2016) FAST v8.16.00 a-bjj. National Renewable Energy Laboratory.
13.
JonkmanBJ (2009) TurbSim user’s guide: Version 1.50 (No. NREL/TP-500-46198). Golden, CO: National Renewable Energy Lab.
14.
JonkmanJButterfieldSMusialW, et al. (2009) Definition of a 5-MW Reference Wind Turbine for Offshore System Development (No. NREL/TP-500-38060). Golden, CO: National Renewable Energy Lab.
15.
La CavaWLacknerMA (2015) Theory Manual for the Tuned Mass Damper Module in Fast v8. Amherst, MA: University of Massachusetts Amherst.
16.
LacknerMARoteaMA (2011) Passive structural control of offshore wind turbines.Wind Energy14(3): 373–388.
17.
LacknerMARoteaMA (2011) Structural control of floating wind turbines.Mechatronics21(4): 704–719.
O’DonnellDMurphyJDesmondC, et al. (2017, May) Tuned liquid column damper based reduction of dynamic responses of scaled offshore platforms in different ocean wave basins. In Journal of Physics: Conference Series842(1): 012043.
20.
ParkS (2019) Structural control of offshore wind turbines using passive and semi-active control . Doctoral dissertation, University of Massachusetts Amherst, MA, United States.
21.
ParkSLacknerMAPourazarmP, et al. (2019) An investigation on the impacts of passive and semiactive structural control on a fixed bottom and a floating offshore wind turbine.Wind Energy22(11): 1451–1471.
22.
SiYKarimiHR (2014, August) Gain scheduling H2/ structural control of a floating wind turbine. In World Congress19(1): 6788–6793.
23.
StainoABasuBNielsenSR (2012) Actuator control of edgewise vibrations in wind turbine blades.Journal of Sound and Vibration331(6): 1233–1256.
24.
StewartGLacknerM (2013) Offshore wind turbine load reduction employing optimal passive tuned mass damping systems.IEEE Transactions on Control Systems Technology, 21(4): 1090–1104.
25.
StewartGMLacknerMA (2011) The effect of actuator dynamics on active structural control of offshore wind turbines.Engineering Structures33(5): 1807–1816.
26.
SunCJahangiriV (2018) Bi-directional vibration control of offshore wind turbines using a 3D pendulum tuned mass damper.Mechanical Systems and Signal Processing105: 338–360.
27.
WarburtonGB (1982) Optimum absorber parameters for various combinations of response and excitation parameters. Earthquake Engineering & Structural Dynamics10(3): 381–401.
28.
ZhangZBasuBNielsenSR (2015) Tuned liquid column dampers for mitigation of edgewise vibrations in rotating wind turbine blades.Structural Control and Health Monitoring22(3): 500–517.
29.
ZhangZLiJNielsenSR, et al. (2014) Mitigation of edgewise vibrations in wind turbine blades by means of roller dampers.Journal of Sound and Vibration333(21): 5283–5298.
