Dynamic Modeling and Experimental Verification on the Rotor-Armature Structure of a Steam Turbine-Generator Unit

Jalali, Hassan, Rafieian, Farzad and Khodaparast, Hamed Haddad (2022) Dynamic Modeling and Experimental Verification on the Rotor-Armature Structure of a Steam Turbine-Generator Unit. Applied Mathematical Modelling, 107. pp. 802-814. ISSN 0307-904X

[img] Text
Paper_31Jan2022.pdf - Accepted Version
Restricted to Repository staff only until 1 April 2023.
Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0.

Download (891kB) | Request a copy
Official URL: https://doi.org/10.1016/j.apm.2022.03.009

Abstract

The rotor-armature structure of an exciter rotor used in a steam turbine-generator unit is investigated in this work. The objective is to create a base verified linear dynamic model of the exciter rotor for fault diagnosis or nonlinear interactions analysis. Natural frequencies for the rotor-armature structure are obtained from modal testing in free-free conditions. An analytical model for the structure is then constructed using Timoshenko beam theory, in which the linear effect of contact interface between rotor and armature is included. The unknown parameters of the rotor-armature model are identified by comparing analytical and experimental results. The verified dynamic model serves as the base for fault diagnosis and nonlinear response analysis due to the rotor and armature interactions.

Item Type: Article
Uncontrolled Keywords: Rotor-armature, Structural modeling, Dynamic characteristic, Parameter identification
Subjects: H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: John Coen
Date Deposited: 21 Mar 2022 10:35
Last Modified: 05 May 2022 15:33
URI: http://nrl.northumbria.ac.uk/id/eprint/48702

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics