June 29, 2021 11:00 a.m.–4:20 p.m. EDT

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COMSOL Day: Low-Frequency Electromagnetics

See what is possible with multiphysics simulation

Join us for this 1-day event to learn about how simulation can be used to develop your low-frequency electromagnetics applications. You will have the opportunity to meet with COMSOL technical staff and COMSOL users from industry where AC/DC phenomena is integral, such as for motors, generators, transformers, and small inductive devices. We will also discuss coil modeling, electromagnetic heating, rotating machinery, and electrical circuits.

We welcome both experienced COMSOL Multiphysics® users and those who are new to the COMSOL® software to attend COMSOL Day: Low-Frequency Electromagnetics. The sessions will focus on modeling techniques, and you will learn about the software features and best practices for specific topics. In a panel discussion, COMSOL users from industry will provide perspective on the importance of simulation for their applications.

View the preliminary schedule below. Note that some sessions are subject to change.

Register for free today!


11:00 a.m.
Welcoming Remarks
11:15 a.m.

Cable modeling is important for a wide range of applications in the power & energy industry. In recent years, dramatic improvements have been made in designing and optimizing these applications, through engineers simulating them with COMSOL Multiphysics®. Now, with the advent of the Application Builder, sophisticated cable models can be packaged into easy-to-use simulation apps, making the advantages brought by modeling accessible to all engineers and technical operatives in your organization.

This session will consist of live demonstrations and showcase examples from industry where HVDC applications have been simulated through models and with apps. We will discuss specific topics, such as twisted periodicity, magnetic armors, bonding types, dielectric loss, thermal effects, and more.

11:45 a.m.
12:00 p.m.
Parallell Session
Coils to Transformers

Looking at industrial applications, coils (or inductors) are found everywhere. Examples include converters and motors, as well as smaller devices such as mobile phones and headphones. This session starts with an overview of the different coil types you can model in COMSOL Multiphysics® and works toward the most prominent industrial application — the transformer. We will also address the various multiphysics phenomena you can model in the context of transformer modeling.

Modeling Electric Motors

In this session, you will learn about using COMSOL Multiphysics® to model synchronous and asynchronous electric machines as motors and generators. We will cover simulating the electromagnetic fields in both 2D and 3D, extracting torque, losses, and all relevant variables necessary to assess behavior and efficiency in various regimes. You will also see how the AC/DC-based physics in electric motors can be coupled to heat transfer to calculate cooling requirements, as well structural mechanics and acoustics behavior to predict noise.

12:30 p.m.
12:45 p.m.

Industry organizations will showcase how they are using multiphysics simulation to improve products and solve problems.


  • Eric D. Langlois, Sandia National Laboratories
  • Jon Leman, POWER Engineers, Inc.
  • Girish R. Kamath, Hypertherm, Inc.
1:30 p.m.
2:00 p.m.
Welcome Back: Some Useful Resources
2:05 p.m.
Parallell Session
Electromagnetic Heating

Turn on a power switch and you inevitably get heat. Joule and induction heating are easily the most common multiphysics phenomena in low-frequency electromagnetics, and this session will show you how to model them. We will cover the basics, such as analyzing how conductive or induced currents create heat, as well as more complex applications, including heating a moving mechanical part.

Tech Café: Magnetic Material Models

Ferromagnetic materials are at the heart of motors, transformers, inductors, and many other electromagnetic devices. A challenge with simulating these applications and devices is to consider the variable and nonlinear properties of ferromagnetic materials, such as magnetic saturation, hysteresis, and anisotropy. Join us in this Tech Café to discuss and ask questions to COMSOL technical staff about techniques for modeling magnetic materials and phenomena, such as iron loss estimation, using Steinmetz or Bertotti loss models for fundamental frequency and harmonics, and explicit hysteresis modeling.

2:35 p.m.
2:50 p.m.
Parallel Session
Low-Frequency Electromagnetics Modeling

The AC/DC Module is designed for low-frequency electromagnetics modeling. As an introduction to COMSOL Multiphysics® and this type of modeling, this session will investigate the phenomena and demonstrate some of the key features and techniques included in the AC/DC Module, such as coil modeling, inductive heating, electric motors, electrical circuits, and the efficient modeling of thin layers.

Tech Café: Electromagnetic Forces

Accurately calculating electromagnetic forces and torques is a key element in many electromagnetics-based models, for instance, in electric motor modeling. What techniques are available for calculating electromagnetic forces in the AC/DC Module? How can you estimate and improve the numerical accuracy of the calculated forces? This will be demonstrated and discussed during this Tech Café session.

3:20 p.m.
3:35 p.m.
Parallel Session
Tech Café: Electromagnetic Shielding

Whether you want to protect your sensitive electronics from interference or reduce high-voltage fields around your power station, you need electromagnetic shielding. The AC/DC Module comes with a variety of boundary conditions useful for modeling the thin geometries that are involved. In this session, we will cover dielectric and magnetic shielding with linear and nonlinear materials, and look at how you can model the shielding efficiency versus the frequency.

Resistive and Capacitive Devices

For many electromagnetic devices, you can reasonably neglect the effects of magnetic fields, especially in steady-state analyses. This session will cover the modeling of electric fields in both resistive devices and insulative devices, i.e., capacitors. We start with an overview of the various options for predicting steady-state performance, and then extend the discussion into the time- and frequency-domain options.

4:05 p.m.
4:20 p.m.
Concluding Remarks

COMSOL Speakers

Ajinkya Shetye
Technical Sales Engineer
Ajinkya Shetye joined COMSOL in 2016 as a technical sales engineer. He received his master's degree in mechanical engineering from the University of Texas, Arlington. Ajinkya's research focus was on microfluidics, thermal management, MEMS fabrication, and interfacial phenomena.
Cristina Lombardo
Sales Events Specialist
Bjorn Sjodin
VP of Product Management
Bjorn Sjodin is the VP of product management at COMSOL. He has been with COMSOL since 1995 and started out as a member of the development team in Stockholm, Sweden. He joined the COMSOL office in Burlington in 2002.
Phil Kinnane
Senior VP of Sales
Phil Kinnane is the senior VP of sales at COMSOL, Inc., and has been with COMSOL since 2000. Previously, he worked in industry and has modeling and simulation experience within a variety of engineering fields. He earned his PhD in electrochemical engineering from the Royal Institute of Technology (KTH), Stockholm.
Walter Frei
Principal Applications Engineer
Walter Frei has been with COMSOL since 2008. He received his PhD in mechanical engineering from the University of Illinois at Urbana-Champaign, working on the optimization of photonic crystal microcavity lasers.
Cesare Tozzo
Senior Developer
Cesare Tozzo has been with COMSOL for over ten years and is the technical manager for the Italian office and product specialist in the electromagnetics development group. He has a PhD in physics from the University of Trento and studied quantum statistical mechanics as a postdoctoral researcher at Scuola Normale Superiore of Pisa.
Durk de Vries
Technical Product Manager, AC/DC Module
Durk de Vries is the technical product manager for the AC/DC Module at COMSOL. In addition to AC/DC, he works with the RF and Wave Optics modules. Before joining COMSOL in 2013, he did research on RF cavities and low-frequency electromagnetics at the Particle Accelerator Institute in Groningen and the University of Eindhoven.
Jaymin Patel
Applications Engineer
Jaymin Patel is an applications engineer at COMSOL. His focus is on products related to CFD, heat transfer, and chemical engineering. He received his master's degree in chemical engineering from the Georgia Institute of Technology.
Ping Chu
Senior Applications Engineer
Ping Chu is an applications engineer specializing in electromagnetics and optics. Prior to joining COMSOL in 2012, Ping received her PhD in condensed matter physics from the University of California, Irvine, investigating the plasmonic and ferromagnetic properties of metallic nanostructures.
Yeswanth Rao
Senior Applications Engineer
Yeswanth Rao is a senior applications engineer and has been with COMSOL since early 2008. He holds a PhD in biological engineering and a master's degree in electrical engineering. His finite element background is in MEMS, particularly piezoelectric modeling.

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COMSOL Day Details


This event will take place online.

Local Start Time:
June 29, 2021 | 11:00 a.m. EDT (UTC-04:00)
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Invited Speakers

Eric D. Langlois
Sandia National Laboratories

Eric D. Langlois joined the Advanced MEMS group at Sandia National Laboratories in Albuquerque, New Mexico, in 2008 and is currently a principal member of the technical staff. He received his BSE degree in engineering physics from the University of Arizona, an MS degree in electrical engineering from Rensselaer Polytechnic Institute, and a PhD degree in electrical engineering from Arizona State University on the topic of “Scalable Magnetically Actuated Latching Micro-Relays”. His current technical interests at Sandia include next-generation microinductors, transformers, current sensors, MEMS variable capacitors, and microgenerators.

Jon Leman
POWER Engineers, Inc.

Dr. Jon Leman is a principal engineer in the Analytical Services group at POWER Engineers, Inc. http://www.powereng.com. His responsibilities include leading engineering teams and performing studies for the design and analysis of energy infrastructure. He is also co-owner of Electric Utility Design Tools, a startup specializing in software for the electrical design of transmission and distribution lines www.electricutilitytools.com. His technical interests are electromagnetics, power system transients, equipment failure investigation, numerical methods, insulation coordination, and power system planning. Mr. Leman is a member of CIGRE and a senior member of IEEE. He earned his BSEE and MSEE at the University of Idaho and his PhD at Washington State University. His research emphasis was in high-voltage transmission line electromagnetics and design optimization. When not at work, Dr. Leman enjoys backpacking, gardening with his children, and playing bass guitar in a local band.

Girish Kamath

Girish Kamath works as a design engineer at Hypertherm, a metal cutting company. He uses the multiphysics approach to design magnetic and power electronics components for plasma cutting power supplies. He has been using COMSOL® to model the electromagnetic, thermal, and flow effects as part of the multiphysics design process for more than 10 years. Girish holds a PhD degree in electrical engineering from the University of Minnesota.