Research on Flow Rule and Thermal Dissipation Between the Rotor Poles of a Fully Air-cooled Hydro-generator

Zhang, Shukuan; Li, Weili; Li, Jinyang; Wang, Likun; Zhang, Xiaochen

doi:10.1109/tie.2014.2366723

Cited by 21 publications

(10 citation statements)

References 14 publications

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“…Using the results of the electromagnetic losses as heat sources, the temperature field of the end domain can be calculated [26]. The fluid-solid coupled model is given in Figure 7.…”

Section: Verification For Electromagnetic Loss Calculation By Thermal Testmentioning

confidence: 99%

Prediction of Electromagnetic Characteristics in Stator End Parts of a Turbo-Generator Based on MLP and SVR

et al. 2021

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In order to study the multiple restricted factors and parameters of the eddy current loss of generator end structures, both the multi-layer perceptron (MLP) and support vector regression (SVR) are used to study and predict the mechanism of the synergistic effect of metal shield conductivity, relative permeability of clamping plates and structural characteristics of eddy current losses. Based on the eddy current losses of generator end structures under different metal shielding thicknesses and electromagnetic properties, the calculation accuracy of the MLP and SVR is compared. The prediction method gives an effective means for the complex design of the end region of the generator, which reduces the effort of the designers. It also promotes the design efficiency of the electrical generator.

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“…Using the results of the electromagnetic losses as heat sources, the temperature field of the end domain can be calculated [26]. The fluid-solid coupled model is given in Figure 7.…”

Section: Verification For Electromagnetic Loss Calculation By Thermal Testmentioning

confidence: 99%

Prediction of Electromagnetic Characteristics in Stator End Parts of a Turbo-Generator Based on MLP and SVR

et al. 2021

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“…In contrast, for the numerical analysis of the temperatures of electric machinery, the introduction of the finite-element method (FEM) into the analysis of the temperature field of the turbo-generator by Armor [12] has significantly improved numerical calculations. The FEM and the finite-volume method (FVM) have undergone rapid development and are widely used in the thermal analysis of electric machinery, allowing relatively comprehensive and accurate calculation results to be obtained [12][13][14][15][16][17][18][19]. Nonetheless, due to the inherent defects of the above numerical analysis methods, such as their dependence on computing hardware resources and large volumes of computing data, it is difficult to substantially improve the solution efficiency over long time periods.…”

Section: Introductionmentioning

confidence: 99%

Analysis of magnetic pole loss and heat in a tubular hydro‐generator based on 3D electromagnetic field–thermal network modelling

Xie

Zhou

et al. 2023

IET Electric Power Appl

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In order to more accurately and efficiently determine the loss and heating state of the magnetic pole area of a tubular hydro-generator, this study establishes a comprehensive 3D electromagnetic field-thermal network analysis model of its pole area and implements calculations according to its rated symmetrical operating conditions. A 36 MW large tubular hydro-generator is used as an example. Based on the measured results of the pole temperature and the use of the calculation hardware, the results are compared with the traditional electric circuit-magnetic circuit-thermal circuit method and 3D electromagnetic field-temperature field finite-element method. It is shown that the 3D electromagnetic field-thermal network model established in this study has several advantages, including high calculation accuracy, short calculation time, and low hardware consumption. These results have important value in improving the electromagnetic-temperature analysis and design of poles in large hydro-generators.

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“…To date, although in area of the rotor loss and heat of hydro-generator, researchers have carried out some constructive study and made a number of significant achievements [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], including the analytical calculation and numerical analysis of damper winding current and loss [2][3][4],the electromagnetic-temperature field coupling analysis of damper winding loss and heat [5][6][7] ， the discussion of the influence of structural parameters on damper winding loss and heat [8][9],and the coupling analysis of fluid-temperature field of rotor pole heat [10][11][12][13][14][15][16]. However, none of above research work involves the analysis of the overheat fault of the hydro-generator rotor.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Treatment of an Overheated Ablated Fault on the Pole Shoe Surface of a Large Tubular Hydro-Generator

et al. 2020

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Research on Flow Rule and Thermal Dissipation Between the Rotor Poles of a Fully Air-cooled Hydro-generator

Cited by 21 publications

References 14 publications

Prediction of Electromagnetic Characteristics in Stator End Parts of a Turbo-Generator Based on MLP and SVR

Prediction of Electromagnetic Characteristics in Stator End Parts of a Turbo-Generator Based on MLP and SVR

Analysis of magnetic pole loss and heat in a tubular hydro‐generator based on 3D electromagnetic field–thermal network modelling

Analysis and Treatment of an Overheated Ablated Fault on the Pole Shoe Surface of a Large Tubular Hydro-Generator

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