Journal ArticleDOI
3D Magnetic Field and Loss Analysis at the No Load Condition in the End Region of 4-Poles Large Turbine Generator
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TLDR
In this paper, the principle of magnetic field and loss at the end region of large 4-poles large turbine generator, 3D transient electromagnetic field finite element (FE) models of the end regions are established respectively.Abstract:
To study the principle of magnetic field and loss at the end region of large 4-poles large turbine generator, 3D transient electromagnetic field finite element (FE) models of the end region are established respectively. Considering the factors such as rotor motion, core non-linearity and time-varying of electromagnetic field, the anisotropic heat conductivity and different heat dissipation conditions of stator end region, a 50Hz, 1150MW, 4-poles large turbine generator is investigated. The magnetic field and loss at no-load condition of the generator end region are calculated and the calculation results are compared with the test data. The result shows that the calculation model is accurate.read more
References
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Journal ArticleDOI
An integrated approach for the calculation of losses and temperatures in the end-region of large turbine generators
TL;DR: In this article, the finite element method is applied to the stator end-packets, the copper screen, and the clamping plate of a 1000 MW two-pole generator.
Journal ArticleDOI
3-D eddy current analysis in the end region of a turbogenerator by using reduced magnetic vector potential
TL;DR: In this article, the authors presented a novel strategy to model the full three-dimensional structures of end region of huge turbine-generators with power level up to 1000MW by utilizing the reduced magnetic vector potential formulation.
Journal ArticleDOI
Magnetic field analysis of stator core end region of large turbogenerators
TL;DR: In this paper, a method of evaluating the leakage flux of the stator end region of large turbogenerators, combining three-dimensional magnetic field analysis and phasor diagram analysis of the end leakage flux is described.
Proceedings ArticleDOI
Eddy current analysis in the stator end structures of large capacity turbine generators
TL;DR: In this article, the results of three-dimensional electromagnetic field analyses of the stator end structures are described, and it is demonstrated that the eddy current loss dependency on the power factor can be explained with the phasor diagrams on the magnetic flux.
Journal ArticleDOI
Simulation for Design Purposes of Magnetic Fields in Turbine-Driven Generator End Region
TL;DR: In this paper, the authors applied the three-dimensional finite element method to the end region design of large-capacity turbine-generators to quantitatively evaluate the effects of flux shunts and control leakage flux of end regions.