E-lesson

EM FE Method Applied for Transformers Design – e-lesson#3 – Electromagnetic Fundamentals

This is the first e-lesson in the Transformer Specification course.

Basic level Thursday, 19 February 2026, 2:00 PM TZ Europe/Zagreb
Basic level

Hosted by: Zlatko Hanic

This lesson introduces the fundamental electromagnetic principles governing transformer operation. We will explain the physical meaning of magnetic flux, inductance, flux linkage, and mutual coupling between windings. These concepts form the foundation for understanding electromagnetic simulations and transformer modelling. Participants learn how Faraday’s law and Ampère’s law describe electromagnetic behaviour inside transformers and how these laws are used to predict flux distribution and electrical performance. The origins of copper losses, core losses, and leakage fields are explained using practical engineering examples and visualizations. The lecture focuses on building intuitive understanding rather than mathematical derivations, helping participants connect physical phenomena with simulation results.

 

Learning Outputs

•       Understand key electromagnetic principles governing transformers

•       Explain the concepts of magnetic flux, inductance, and flux linkage

•       Identify sources of copper and core losses

•       Relate electromagnetic theory to transformer modelling

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About the author

Zlatko Hanic

Zlatko Hanić is an Associate Professor at the University of Zagreb Faculty of Electrical Engineering and Computing (FER). He has over 15 years of experience in the analysis, design, and optimization of electromechanical and electromagnetic devices, including transformers. His work bridges academic research and practical engineering, specializing in advanced modeling, numerical analysis, and performance optimization of electrical machines.