Abstract
Background
For the continuous operation of the power plant and to prevent any economic or fatal damages, the torsional vibration control of the large turbo-generator rotor is required. Compared to the flow mode dampers, the shear mode magnetorheological fluid dampers are less efficient in regulating the torsional vibrations of the large turbo-generator rotor because of the complicated configuration and low damping ability.
Purpose
This theoretical study explains how magnetorheological (MR) fluid dampers can be used to control torsional vibration of the turbo-generator rotor. A theoretical analysis is conducted to compare the damping efficiency of the MR damper under constant and variable magnetic fields.
Methods
The dq0 model is used to simulate the electromagnetic torque of the generator during multiple electrical failures. The turbo-generator rotor is simulated using the finite element method. MR fluid dampers are attached to the rotor's different coupling elements. For designing the dampers, the modified Bouc-Wen model is used. In MATLAB, the coupled finite element equations are solved using Newmark-beta integration method.
Results
The peak amplitude of torsional vibrations in element 35 reduce by 1–60 percent for various electrical faults using passive MR dampers and 10–46 percent using semiactive MR dampers. The peak amplitude of torsional vibrations in element No 74 reduces by 1–55 percent for various electrical faults using passive MR dampers and 7–50 percent using semiactive MR dampers.
Conclusions
During various electrical failures, the most severe torque evolved is three phase fault, followed by the line to ground, followed by mal-synchronization fault and line to line fault. The torsional vibrations produced on turbo-generator rotor due to this variation in electromagnetic torque of the generator and the numerical results show the significant reduction in the torsional vibration of the rotor when MR fluid dampers are used.
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References
Loewenthal S (1986) Factors that affect the fatigue strength of power transmission shafting and their impact on design. J MechTransmAutom Des 108(1):106–114
Chyn C, Wu R, Tsao T (1996) Torsional fatigue of turbine-generator shafts owing to network faults. IEE ProcGenerTransmDistrib 143(5):479
Hartog D, Pieter J (1985) Mechanical vibrations. Courier Corporation
Diniş C, Popa G, lagăr A, (2017) Analysis of synchronous and induction generators used at hydroelectric power plant. IOP ConfSer Mater SciEng 163:012033
Jackson M, Umans S, Dunlop R, Horowitz S, Parikh A (1979) Turbine-generator shaft torques and fatigue: Part I—simulation methods and fatigue analysis. IEEE Trans Power ApparSyst PAS-98(6):2299–2307
Jackson M, Umans S (1980) Turbine-generator shaft torques and fatigue: Part III—refinements to fatigue model and test results. IEEE Trans Power ApparSyst 99(3):1259–1268
Best R, Morrow D, Crossley P (2009) Effect of loading, voltage difference and phase angle on the synchronisation of a small alternator. IET Electr Power Appl 3(6):531
Lupşa-Tătaru L (2009) Comparative simulation study on synchronous generators sudden short circuits. Model SimulEng 2009:1–11
Chen Y (2004) An investigation of excitation method for torsional testing of a large-scale steam turbine generator. J VibAcoust 126(1):163–167
Liu C, Jiang D, Chen J (2014) Coupled torsional vibration and fatigue damage of turbine generator due to grid disturbance. J Eng Gas Turbines Power. https://doi.org/10.1115/1.4026214
Meirovitch L (1992) Dynamics and control of structures. Wiley, Singapore
Hammons T, Chanal L (1991) Measurement of torque in steam turbine-generator shafts following severe disturbances on the electrical supply system-analysis and implementation. IEEE Power Eng Rev 11(3):47
Electric Power System Fault Analysis (2020) Wseas Transactions on Circuits and Systems, 19.
Przybyłowicz P (1995) Torsional vibration control by active piezoelectric system. J TheorApplMech 33(4):809–823
Soom A, Lee M (1983) Optimal design of linear and nonlinear vibration absorbers for damped systems. J VibAcoust 105(1):112–119
Walsh P, Lamancusa J (1992) A variable stiffness vibration absorber for minimization of transient vibrations. J Sound Vib 158(2):195–211
Sun J, Jolly M, Norris M (1995) Passive, adaptive and active tuned vibration absorbers—a survey. J VibrAcoust 117(B):234–242
Bogue R (2014) Smart materials: a review of capabilities and applications. AssemAutom 34(1):16–22
Junkins J (1990) Mechanics and control of large flexible structures. American Institute of Aeronautics and Astronautics, Washington, DC
Ilic M, Zaborszky J (2000) Dynamics and control of large electric power systems. Wiley, New York
Soong T, Chen W, Chen W, Chen W (1990) Active structural control. Longman Scientific & Technical, Harlow
Cohen K, Weller T, Ben-Asher J (2002) Active control of flexible structures using a fuzzy logic algorithm. Smart Mater Struct 11(4):541–552
Preumont A (2019) Vibration control of active structures. Springer International PU: [S.l.]
Sung C, Varadan V, Bao X, Varadan V (1994) Active torsional vibration control experiments using shear-type piezoceramic sensors and actuators. J Intell Mater SystStruct 5(3):436–442
Wenzhi G, Zhiyong H (2010) Active control and simulation test study on torsional vibration of large turbo-generator rotor shaft. Mech Mach Theory 45(9):1326–1336
Dyke S, Spencer B, Sain M, Carlson J (1996) Modeling and control of magnetorheological dampers for seismic response reduction. Smart Mater Struct 5(5):565–575
Sun Y, Thomas M (2010) Control of torsional rotor vibrations using an electrorheological fluid dynamic absorber. J Vib Control 17(8):1253–1264
Hoang N, Cao D (2011) Design of a torsional dynamic absorber using magnetorheological elastomers for powertrain vibration control. Adv Mater Res 230–232:372–376
Wang J, Meng G (2005) Study of the vibration control of a rotor system using a magnetorheological fluid damper. J Vib Control 11(2):263–276
Pręgowska A, Konowrocki R, Szolc T (2013) On the semi-active control method for torsional vibrations in electro-mechanical systems by means of rotary actuators with a magneto-rheological fluid. J TheorApplMech 51(4):979–992
Butz T, von Stryk O (2002) Modelling and simulation of electro- and magnetorheological fluid dampers. ZAMM 82(1):3
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Kumar, T., Kumar, R. & Jain, S.C. Numerical Investigation of Semi-active Torsional Vibration Control of Heavy Turbo-generator Rotor using Magnetorheological Fluid Dampers. J. Vib. Eng. Technol. 9, 967–981 (2021). https://doi.org/10.1007/s42417-020-00276-5
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DOI: https://doi.org/10.1007/s42417-020-00276-5