General Survey.- Low Frequency Electromagnetic Fields and the Finite Element Method.- Some Key Techniques in Electromagnetic and Thermal Field Modeling.- Solution of Coupled Electromagnetic-Thermal Fields.- Development of the API-based Script.- Harmonic-Balance Finite-Element Method and Its Application.- Magnetic Material Modeling.- Measurements of Multi-Directional Anisotropy Using Epstein Frame.- Electromagnetic Properties Modeling Based on Laminated Core Models.- Electromagnetic Properties Modeling Based on Ring Type Core Models.- Magnetic Properties Measurement under Extreme Excitation Conditions.- Problem 21 Benchmark Family and Stray-Field Loss Problems.- Additional Loss caused by the Magnetic Flux Normal to the Plane of Laminations.- Electromagnetic and Thermal Modeling based on Transformer Model.- Modeling DC Bias in Transformers.