Automated FEM transformer design for a dual active bridge / by: Till Piepenbrock ; first examiner: Prof. Dr.-Ing. Joachim Böcker, second examiner: Prof. Dr.-Ing. habil. Stefan Krauter, advisor: Nikolas Förster. Paderborn, 2022
Inhalt
- Introduction
- Basic Electromagnetics
- FEM Simulation Framework: FEMMT
- Code Structure of FEMMT
- Strands Approximation
- Inductance Estimation by Simulation
- Inductance Calculation from the Magnetic Field Energy
- Inductance Calculation from the Magnetic Flux
- Determination of the Equivalent Circuit Parameters
- Skin Based Meshing
- Simulation of Core Losses
- Complex Core Parameters
- Improved Generalized Steinmetz Equation
- Limits of FEM Based Core Loss Approaches
- Reluctance Model
- Magnetic Circuit Basics
- Reluctance Model for an Integrated Transformer
- Air Gap Characterization Including Fringing Effects
- Minimal Example of FEMMT
- Design of an Integrated Transfomer for a Dual Active Bridge
- Component Modelling
- 2D Axisymmetric Approximation
- Initial Grid Search Parametrization
- Motivation for an Analytical Reluctance Model
- Transformer Behaviour of a Dual Active Bridge Converter
- Optimization of the Geometry
- Workflow: Problems and Future Tasks
- Operation of the Dual Active Bridge
- Abstract
- Bibliography
- Acronyms
- Appendix