Dynamic modeling and experimental verification on the rotor-armature structure of a steam turbine-generator unit

被引：1

作者：

Jalali, Hassan ^{[1
]}

Rafieian, Farzad ^{[2
]}

Khodaparast, Hamed Haddad ^{[3
]}

机构：

[1] Northumbria Univ, Dept Mech & Construction Engn, Newcastle Upon Tyne NE1 8ST, Northumberland, England

[2] Arak Univ Technol, Dept Mech Engn, Arak 41167, Iran

[3] Swansea Univ, Coll Engn, Fabian Way,Crymlyn Burrows,Bay Campus, Swansea SA1 8EN, Wales

来源：

APPLIED MATHEMATICAL MODELLING | 2022年 / 107卷

关键词：

Rotor-armature; Structural modeling; Dynamic characteristic; Parameter identification; CONTACT; JOINT; IDENTIFICATION; INTERFACE;

D O I：

10.1016/j.apm.2022.03.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (c) 2022 Elsevier Inc. All rights reserved.

引用

页码：802 / 814

页数：13