COMSOL Day: Power & Energy

September 29, 2020 Zürich 9:00 AM - 5:00 PM CEST

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Re-scheduled from May 5th

Join us for COMSOL Day: Power & Energy in Zürich for a full day of energy-related modeling and interaction with the simulation experts in the electrical power industry. Learn how COMSOL Multiphysics® can accelerate research and development of high voltage equipment, smart grids and transformers.

You will get an overview of the electromagnetic modeling capabilities in the COMSOL® software and will see how you can streamline the simulation workflow by building and deploying applications.

There will be demo and support stations where you can discuss your individual modeling needs with COMSOL technical staff members.

Additionally, all attendees will receive a free two-week trial licence of the COMSOL Multiphysics® software for use both during and after the event.

COMSOL Day: Power & Energy is free of charge. Feel free to invite your colleagues!

In order to get an accurate head count for planning purposes, we would greatly appreciate if you could register on or before September 25.


Welcoming Remarks

The design of cables and busbars can benefit largely from multiphysics simulation. Get an overview of the capabilities for modeling direct- and alternating-current systems and their resistive, capacitive, inductive, and electrothermal behavior.

Coffee Break
Invited Speaker

Modeling and Design of Stepper Motors: Challenges and Opportunities

Stepper motors (SM) are a particular class of synchronous electrical machines which differ significantly, in terms of both construction and final use, from their more famous siblings like DC and Brushless motors. The step-by-step motion proper of these devices is typically achieved by optimizing motor geometry in order to modulate cogging torque and define stable equilibrium positions, or “steps”, along the rotor revolution. However, as complexity increases, a purely analytical modeling approach becomes more challenging, impractical or even impossible. Moreover, due to the high number of magnetic pole pairs typically implemented in SM (12 or more), high frequency effects (e.g. eddy currents) are triggered at relatively low operational speeds, making them basically non negligible even in an early design phase. In this context, it becomes evident the capital importance of a Finite Elements based approach for a comprehensive description of SM and their subsequent optimization. In this sense, COMSOL Multiphysics has allowed us to investigate and identify nontrivial issues affecting motor performances, and overcome them in an effective, targeted manner.


Simulations can provide important insight into the context of EMC and EMI testing. Learn about best practices for simulating the shielding of static and dynamic electric and magnetic fields, including the use of nonlinear materials, thin layers, and the modeling of charge relaxation effects.

Break for Lunch

The quality of transformers is characterized by effects covering a wide range of physics: electromagnetic efficiency, electric and magnetic losses, stray fields, heating, and even noise emission. Discover how multiphysics simulation can help you predict the performance of transformers.

Invited Speaker

Application Development for a 3D Power Transformer Model for Winding Noise Simulation

Transformer noise has become an important topic in recent decades. As transformers are placed close to residential areas, calculation and measurement techniques of noise have become very important in the transformer industry.

In transformers, three main noise sources can be distinguished: windings, cores, and cooling equipment (fans). Core vibrations are caused by rated voltage (magnetic flux) that causes the magnetostriction effect, while windings vibrate due to the Lorentz force on winding conductors where current is applied. During transformer operation, core and winding vibrations spread to the transformer tank via supporting structures as structure-borne vibrations and via transformer oil as pressure fluctuations. Vibrations of transformer tanks radiate the noise into surroundings, where finally noise is measured. Such a sequence of physical events shows how complex the noise problem is.

For fast and efficient evaluation of load (winding) noise, an application using the COMSOL® software has been created. The most important electrical and mechanical parameters are available for the input. The developed application generates the 3D geometry and the mesh. Finally, simulation can be done with three different physics in one study: electromagnetic fields, structural vibrations, and acoustics. By a simple change of the chosen input parameter, a quick analysis on the sound pressure value can be done.

Coffee Break

The basic requirement for the design of electrical machines like motors, generators, and brakes is a fundamental understanding of EM forces and torque. In this session, we compare several methods of calculation regarding their accuracy and suitability.


COMSOL Speakers

Sven Friedel
Sven Friedel established the COMSOL branch office in Switzerland in 2004. He received his PhD in physics from the University of Leipzig in the field of inverse electromagnetic problems. There, he also taught lectures in geomagnetism and volcanology before joining the Institute of Geotechnical Engineering at ETH Zürich as a postdoctoral researcher.
Roman Obrist
Roman Obrist is a technical sales and applications manager at COMSOL. He received his MSc in electrical engineering from the University of Applied Sciences Rapperswil (HSR). There, he was a scientific researcher and project leader in the Computational and Applied Electromagnetics Group, dealing with customer-related research and teaching tasks.

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COMSOL Day Details


Technopark Zürich
Technoparkstrasse 1
Zürich 8005

Invited Speakers

Robert Sitar
Hyundai Electric R&D Center

Robert Sitar received his PhD in electrical engineering at University of Zagreb. He has 10 years of experience in research & development in the transformer industry. During that time, he worked on R&D projects related to different transformer products: traction, distribution, and power transformers. He is currently working at Hyundai Electric R&D Center in Switzerland on the reduction of power transformer noise and multiphysics simulation in high-voltage transformers and switchgear devices.

Jasha Poliakine

Dr. Jasha Poliakine received his PhD in manufacturing systems and robotics from EPFL in 2017. His research activity focused on the modeling and fabrication of small-scale electromagnetic components and actuators. In 2018, he joined the R&D department of FAULHABER Group, one of the largest manufacturers of electric motors and drives worldwide, where he is currently responsible for Stepper motor design and optimization. He leads several development projects and adopts COMSOL Multiphysics® as a main tool in his daily activity.