Big Turbo-Generator Shaft Vibrations Control Using Magnetorheological Fluid Damper

Abstract

In this paper, a passive magnetorheological (MR) fluid damper is used to control vibrations generated in big turbo-generator shaft. The turbo-generator shaft is modeled using finite element method. The torque vibrations appeared in generator during different electrical faults are simulated using d-q-0 model using predictorcorrector method. The modified Bouc-Wen model is used to simulate the MR fluid damper. The complete dynamic system is modeled using MATLAB. The simulation results showed that MR fluid damper effectively reduces the rotor vibrations, but for better control of vibrations an active MR fluid damper can be more effective.

A Novel Magnetorheological Fluid with High-Temperature Resistance

“…Currently, MR fluid, the most widely studied and applied MR material, is commonly used in active vibration control [ 3 , 4 , 5 , 6 , 7 ], transmission [ 8 , 9 ], braking [ 10 , 11 ], polishing [ 12 , 13 ], sealing [ 14 , 15 ], suspensions [ 16 ], haptic modules [ 17 , 18 ], and so on [ 19 , 20 , 21 , 22 , 23 ]. However, problems with temperature rises are inevitable in most MR devices.…”

“…Wang et al [ 24 ] designed a liquid-cooled high-power clutch and proved that the liquid cooling method could effectively improve the heat dissipation of the clutch. On this basis, Wu et al [ 8 ] designed a hollow-structure water-cooled MR clutch to further enhance the heat dissipation effect of the device. Huang et al [ 25 ] designed a multi-channel cooling structure to enhance the cooling efficiency of MR devices.…”