The leakage inductance model of Frenetic Magnetic Simulator

Leakage inductance is crucial in many topologies such as flyback, DAB, and resonant converters impacting operating parameters such as switching behaviour, over voltage, and losses.

Why a Leakage Inductance Model?

Leakage inductance is crucial in many topologies such as flyback converters, dual active bridge converters, and resonant converters impacting operating parameters such as switching behaviour, over voltage, and losses. Hence, it is imperative for the power electronic designer to estimate the value of transformer leakage inductance in the design stage.

Model features and accuracy

Model features

  1. Quasi-3D modelling concept.
  2. Analytical solutions
  3. 2D-magnetic field
  4. Windings can have arbitrary positions
  5. Homogeneous current density assumed
  6. Infinite core permeability assumed

Model Accuracy

Benchmark accuracy: Average error 4.6% compared with measurements of benchmark transformer set.

The accuracy of the Quasi-3D (Q3D) leakage inductance model is in the range of geometric uncertainties. The model is capable of calculating leakage inductance for arbitrarily positioned windings. For detailed results, refer to section IV.

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