Optimal Scheme for Structural Design of Large Turbogenerator Stator End Winding

• Published in: IEEE transactions on energy conversion Vol. 31; no. 4; pp. 1423 - 1432
• Main Authors: Zhao, Yang, Yan, Bo, Zeng, Chong, Huang, Song, Chen, Changlin, Deng, Jianan
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.12.2016; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Bars; Dynamic response; Electromagnetic forces; Finite element method; Full load; Mathematical models; numerical simulation; optimal scheme; Short circuits; Stator cores; stator end winding; Stator windings; Stators; Structural analysis; Structural design; Three dimensional models; turbogenerator; Turbogenerators; Winding; Windings
• ISSN: 0885-8969; 1558-0059
• DOI: 10.1109/TEC.2016.2597151

A three-dimensional (3-D) electromagnetic model of the end region of a 600 MW turbogenerator is set up. The variations of electromagnetic force densities of the stator end winding under rated load and three-phase short circuit from full load are obtained by numerical simulation. Then, the electromagnetic forces varying with time and space on the end winding are applied to the 3-D fine finite-element model established in ABAQUS/CAE for structural analysis, and the deformation and stress distributions of the stator end winding during rated load and three-phase short circuit are numerically analyzed by means of the ABAQUS software. Furthermore, the influences of structural and material parameters of the end winding on its dynamic responses under rated load are numerically investigated. Based on the numerical results, an optimal scheme for the design of the turbogenerator stator end winding is proposed.