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The slow-fast dynamical behaviors of a hydro-turbine governing system under periodic excitations

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Authors
Zhang, H.
Chen, D.
Xu, B.
Wu, Changzhi
Wang, X.
Date
2016
Type
Journal Article

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Zhang, H. and Chen, D. and Xu, B. and Wu, C. and Wang, X. 2016. The slow-fast dynamical behaviors of a hydro-turbine governing system under periodic excitations. Nonlinear Dynamics: pp. 1-10.
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Nonlinear Dynamics
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Department of Construction Management
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Abstract

© 2016 Springer Science+Business Media DordrechtThis paper studies the dynamic evolution behaviors of the hydro-turbine governing system by using Adams–Bashforth–Moulton algorithm. Based on the non-autonomous dynamic model of the hydro-turbine governing system, the effects of the frequency and intensity of periodic excitation on the dynamic characteristics of the hydro-turbine governing system are analyzed in detail. Due to the different scales between the natural frequency and the excitation frequency, the fast-slow effect is obviously found on the behavior of the system under different motion modes. Furthermore, the influence rules of the fast-slow effect for the dynamic behavior of the hydro-turbine governing system are given. The results of the study can contribute to the optimization analysis and control of the hydro-turbine governing system in practical process.