| Abstract |
Fast and accurate models of design and operating parameters are crucial for optimisation-based design of power electronic converters. The leakage inductance of transformers is one of these design parameters. This paper compares various analytical 1D and 2D leakage inductance models, and assesses them with respect to a trade-off between accuracy vs. computational effort. The computed leakage inductance per length values are compared to 2D FEM simulation results to determine the model accuracy, whereas the calculation times are extracted as indicator of each model's computational effort. The considered models are applied to six existing transformer geometries and compared to measurements.Roth's model is the most accurate of the considered models, Rogowski's model is the fastest model, and Margueron's model is the most versatile as it takes the magnetic permeability of the core into account. |
