Dynamic Response of a Main Shaft System of Francis Turbine-Generator Units

Article Preview

Abstract:

Taking the generator and turbine as an integrated system, the nonlinear coupling dynamic equations of the system are established by the finite element method. According to the dynamic equations, the global coupling relations among the structural parameters, fluid parameters and electromagnetic parameters are discovered. Based on the dynamic equations, the dynamic responses of the system are calculated and analyzed. The results show that not only the structural parameters, but also the fluid parameters and the electromagnetic parameters have significant effects on the dynamic responses of the system. Finally, an example is presented.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

581-585

Citation:

Online since:

November 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Bettig B P, Han R P S: Modelling the lateral vibration of hydraulic turbine-generator rotors. Journal of Vibration and Acoustics, Transactions of the ASME, Vol. 121 (1999), pp.322-327.

DOI: 10.1115/1.2893983

Google Scholar

[2] Wang Shaobo, Liu Yuanjie, Liang Xingpei: Dynamic characteristic analysis for the blades of Francis turbine. Journal of Mechanical Strength, Vol. 26 (2004), pp.38-41.

Google Scholar

[3] Saeed R A, Galybin A N, Popov V: Modelling of flow-induced stresses in a Francis turbine runner. Advances in Engineering Software, Vol. 41(2010), pp.1245-1255.

DOI: 10.1016/j.advengsoft.2010.09.001

Google Scholar

[4] Liang Q. W, Rodriguez C G, Egusquiza E, et al: Numerical simulation of fluid added mass effect on a Francis turbine runner. Computers & Fluids, Vol. 36(2007), pp.1106-1118.

DOI: 10.1016/j.compfluid.2006.08.007

Google Scholar

[5] Li Zhaojun, Yang Xujuan, Cai Ganwei, et al: Study on hydraulic excitation exerting on a main shaft system of hydraulic turbine-generator units. Journal of Drainage and Irrigation Machinery Engineering, Vol. 29(2011), pp.423-426.

Google Scholar

[6] Li Zhaojun, Cai Ganwei, Yang Xujuan: Nonlinear global coupling equations of a main shaft system of hydraulic turbine-generator units. Journal of Mechanical Strength, Vol. 30 (2008), pp.175-183.

Google Scholar

[7] Yang Xujuan: Study of global coupling dynamic characteristics of the main shaft system of francis turbing-generator units. PhD Thesis, Guangxi University, (2009).

Google Scholar

[8] Thompson J M T, Stewart H B: Nonlinear Dynamics and Chaos. Wiley, New York, (1986).

Google Scholar