Estimation of the Natural Frequencies of Turbogenerator Busbars
- Authors: Petrenya Y.K.1, Antonyuk O.V.1, Gavrilov S.N.2
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Affiliations:
- JSC “Power Machines”
- JSC “I. I. Polzunov Scientific & Development Association on Research and Design of Power Equipment”
- Issue: Vol 50, No 3 (2016)
- Pages: 309-312
- Section: Article
- URL: https://journals.rcsi.science/1570-145X/article/view/245225
- DOI: https://doi.org/10.1007/s10749-016-0702-y
- ID: 245225
Cite item
Abstract
The objective of this study is to give an understanding of how the natural frequencies and modes of the end-winding components in high-power turbogenerators can be determined. Results from an analysis of various methods are presented, and the main factors that hamper the computation of the natural frequencies with accuracy required for practical purposes are identified. Finite-element 3D modeling was performed to determine the natural frequencies of the outputs and a part of the stator bus ring. It is shown that the calculated frequencies are strongly dependent on the accuracy of modeling the boundary conditions. To improve the accuracy of numerical modeling, it is necessary to use bench and full-scale test data.
Keywords
About the authors
Yu. K. Petrenya
JSC “Power Machines”
Email: s.n.gavrilov@mail.ru
Russian Federation, St. Petersburg
O. V. Antonyuk
JSC “Power Machines”
Email: s.n.gavrilov@mail.ru
Russian Federation, St. Petersburg
S. N. Gavrilov
JSC “I. I. Polzunov Scientific & Development Association on Research and Design of Power Equipment”
Author for correspondence.
Email: s.n.gavrilov@mail.ru
Russian Federation, St. Petersburg