Learn Multiphysics simulations through Transformer modelling

Name: Learn Multiphysics simulations through Transformer modelling
Rating: 5.0 (2 reviews)

Learn Electromagnetic (EM), EM-Circuit, EM-Thermal, EM-Structural, and Non-linearity modelling in COMSOL Multiphysics

Created byRahul Krishna Bhat

Last updated 2/2026

English

What you'll learn

Finding magnetizing and leakage inductance of a transformer
Extracting the parasitic capacitance matrix of the transformer
Connecting the transformer FEM model with a circuit such as rectifier and filter
Computing Iron and copper losses in the transformer
Determine the temperature rise due to electromagnetic losses
Examining the stresses and deformation in the transformer due to electromagnetic forces
Extracting material property data using curve digitizer
Solving convergence issues by rectifying BH curves
Using data from manufacturer's datasheet to model the material behaviour and electromagnetic losses
Obtaining Effective BH curve model from the original material BH curve

Course content

7 sections • 13 lectures • 1h 15m total length

Setting up geometry and materials4:01
Model an ECore transformer, perform open-circuit and short-circuit tests to determine magnetizing and leakage inductances, and build a 3d magnetic field simulation with a laminated core and annular air gap.
Setting up Physics7:55
Set up a 24-volt, 300-turn copper coil with a 0.8 filling factor. Model the laminated core using the effective BH curve and apply gauge fixing.
Obtaining the Magnetizing and Leakage inductance6:13
Compute the magnetizing inductance and leakage inductance of a transformer using open-circuit and short-circuit tests, plotting coil voltages and currents, and evaluating coil resistances.

Setting up the Physics and Mesh7:34
Connect the transformer model to external lumped circuit, drive the primary with a circuit voltage and the secondary with circuit current, then add a full wave rectifier, filter, and plots.
Solving and observing the output waveforms5:09
Observe time-dependent transformer simulations by enabling the magnetic field and electrical circuit solvers, using MUMPS for faster solutions, and adding a primary current probe to monitor evolving waveforms.

Use curve digitizer to convert material loss data into lookup table4:45
Learn to use the curve digitizer to convert a material loss graph into a table, export as mph or text, and validate the digitized iron loss curve against the original.
Use B-H curve checker to rectify and get optimized material B-H curves4:23
Import a BH curve from a datasheet, check and optimize it with the BH curve checker to ensure (0,0), smoothness, and vacuum permeability at saturation, preventing convergence issues.
Use effective nonlinear magnetic curves calculator to obtain effective B-H curve4:00
Convert a material bh curve into an effective bh curve using the effective nonlinear magnetic curves calculator, export via simple energy method, and apply it in a new comsol model.
Modelling Iron losses using loss data from material datasheet3:26
Import Tata Steel iron loss data and apply a user defined model. Interpolate at 50 Hz and convert to watt per kilogram, then multiply by density to yield core losses.

Requirements

Introductory familiarity with COMSOL. Basic exposure to FEM would be advantageous.

Description

This course is all about learning Multiphysics coupled simulations in COMSOL Multiphysics. It covers electromagnetic analysis, electrostatics, electromagnetic loss calculation, coupled electromagnetic-thermal analysis, electromagnetic-structural analysis and finally, various aspects of magnetic material non-linearity modelling.

An E-core transformer example is used for modelling. The course is structured in the form of simple tutorial videos demonstrating how to extract magnetizing and leakage inductances, parasitic capacitances, FEM-circuit coupling with rectifier and filter, iron and copper loss calculation, thermal analysis, structural analysis and BH curve modelling.

Each consecutive tutorial builds up on the previous step to develop a comprehensive capability for performing multiphysics simulations.

Course structure:

Section 1: Electromagnetic analysis
Extracting the Magnetizing and Leakage inductance of a transformer
Section 2: Electrostatic analysis
Obtaining the parasitic capacitance matrix of the transformer
Section 3: FEM-Circuit coupling
Connecting the transformer model with a rectifier and filter
Section 4: Loss calculation
Finding the Iron and Copper losses in the transformer
Section 5: Thermal Analysis
Determine the temperature rise due to electromagnetic losses
Section 6: Structural Analysis
Examine the stresses and deformation due to electromagnetic forces in the transformer
Section 7: Magnetic non-linearity modeling
Extracting curve data from graph using curve digitizer, rectifying B-H curve to solve convergence issues, using loss data from material datasheet and obtaining Effective B-H curve model from original B-H curve

*Subtitles are available for all lectures in English[US].

Why take this course:

This course takes a systematic approach to learning multiphysics simulation. The gradual build up of learning makes the topic very accessible. I have put my heart and soul in making of this course, using my insights to include all the intricacies and nuances I would have been delighted to learn as a beginner, all in one place.

Disclaimer:

This course is not affiliated with, endorsed by, or sponsored by COMSOL AB. COMSOL Multiphysics® is a registered trademark of COMSOL AB. For support and licensing, please visit the COMSOL official website.

Who this course is for:

Students
Research scholars
Industry professionals
People interested in multiphysics simulation and transformers

Learn Multiphysics simulations through Transformer modelling

What you'll learn

Explore related topics

Course content

Electromagnetic Analysis: Performing Open Circuit Test and Short Circuit Test3 lectures • 18min

Electrostatic Analysis1 lecture • 5min

FEM-Circuit Coupling: Connecting to a full bridge rectifier and filter circuit2 lectures • 13min

Electromagnetic loss computation1 lecture • 6min

Coupled Electromagnetic-Thermal Analysis1 lecture • 9min

Coupled Electromagnetic-Structural Analysis1 lecture • 8min

Magnetic Non-linearity modeling4 lectures • 17min

Requirements

Description

Who this course is for: