Core Loss Calculation Based on Finite-Element Method with Jiles-Atherton Dynamic Hysteresis Model

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Journal Article
IEEE Transactions on Magnetics, 2018, 54 (3)
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© 2018 IEEE. For accurate computation of core losses, the Jiles-Atherton ( J - A ) dynamic hysteresis model accounting for hysteresis, eddy current and excess losses is incorporated into the finite-element method (FEM). The J - A dynamic hysteresis model is constructed by combining the traditional J - A hysteresis model with the models of instantaneous eddy current and excess losses. The J - A model parameters and dynamic loss coefficients are determined by fitting the models to the measurement data of a single sheet tester (SST 500) and Epstein frame tester. To find the robust best fit, the particle swarm optimization algorithm is employed. By using the proposed J - A dynamic hysteresis model and FEM, the magnetic characteristics of a magnetic core is simulated and the core loss distribution within the core obtained. The calculated and measured results are compared to show the accuracy and effectiveness of the proposed model.
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