Axisymmetric analysis and experimental measurements of magnetic field in the end region of a turbine generator

Determination of the Leakage Reactance of End Windings of a High-Power Synchronous Generator Stator Winding Using the Finite Element Method

“…The so-called 2.5-dimensional (quasi-3D) models are period models in which the geometric structure of the end region is axisymmetric and the field distribution in the direction of the circumferential coordinate is periodic. The analysis of the electromagnetic field is performed in the plane of the cross-section of the generator end winding region passing through the axis of the machine shaft, when assuming that the distribution of the electromagnetic field in the circumferential direction is sinusoidal [18,19]. The radial and axial components of the current densities in the end windings are neglected.…”

The Determination of the Clamping Finger’s Material by Magnetic-Thermal Coupled Analysis in the End Region of a Hydraulic Generator

“…The current flowing in the windings induces axial fluxes in the end region, and generates local heating of the structural components and other mechanical problems, which has impact on the reliability of generator's operation. Due to the complex geometry of the windings in the end region of a generator, many research works have been reported by taking the end region field as a 2D-axisymmetric problem [1,2]. Although a full three dimensional analysis of the generator is possible with the development of computer [3][4][5][6][7][8], the skin effect of the eddy current in the structural components leads to a huge amount of the calculation, which has a great impact on the accuracy.…”