What question did this study set out to answer?

To develop a three-dimensional coupled electromagnetic-fluid-thermal numerical method for predicting temperature distributions and oil velocities in oil-immersed triangular wound core transformers.

November 1, 2014IEEE Transactions on Magnetics

3-D Coupled Electromagnetic-Fluid-Thermal Analysis of Oil-Immersed Triangular Wound Core Transformer

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Authors

CLCaibo LiaoNanchang University JRJiangjun RuanHubei University of Technology CLChao Charles LiuCity University of Hong Kong

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Implication

Multiphysics simulation reveals accurate temperature rise and oil flow in triangular wound core transformers, demonstrating strong agreement with international thermal standards.

Key Points

To develop a three-dimensional coupled electromagnetic-fluid-thermal numerical method for predicting temperature distributions and oil velocities in oil-immersed triangular wound core transformers.
Calculated electrical power losses in the transformer core and windings under no-load and rated-load conditions using the finite element method.
Imported loss data as heat sources into finite volume fluid-thermal models to calculate oil velocity and internal temperature distributions.
Iterated coupled loss and temperature computations until adjacent-step temperature variations converged below 0.01 K, comparing results for a 10 kV transformer with International Electrotechnical Commission analytical standards.
Iterative computation successfully converged winding losses and fluid-thermal parameters to a maximum temperature variation below 0.01 K.
Predicted hot-spot temperatures matched standard analytical calculations proposed by the International Electrotechnical Commission, validating the coupled numerical framework.

Cite This Study

Liao et al. (2014) studied this question.

synapsesocial.com/papers/6a7056cc5d37378ac1dd6cc3 https://doi.org/10.1109/tmag.2014.2330953

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Implication

Multiphysics simulation reveals accurate temperature rise and oil flow in triangular wound core transformers, demonstrating strong agreement with international thermal standards.

3-D Coupled Electromagnetic-Fluid-Thermal Analysis of Oil-Immersed Triangular Wound Core Transformer

Discussion

Member takes

Implication

Key Points

Cite This Study

3-D Coupled Electromagnetic-Fluid-Thermal Analysis of Oil-Immersed Triangular Wound Core Transformer

Discussion

Member takes

Implication

Key Points

Cite This Study

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