• Description

    Magnetically levitated motor technology allows the development of ultra high speed and efficient motor systems. Unfortunately, magnetic bearings are often times prohibitively expensive and bulky. My research solves these shortcomings by re-using the magnetic field that is already present in the motor to create magnetic bearing forces. These systems are called bearingless motors and combine the functionality of a magnetic bearing and motor into a single electromechanical device. Bearingless motors are computationally expensive to analyze, typically requiring 3D Finite Element Analysis, oftentimes unable to use symmetry conditions, and require fine air gap meshes for accurate force calculations. This presentation will investigate the integration of Matlab and MagNet to facilitate the design, simulation, and analysis of bearingless motors. The presentation will first introduce bearingless motors and their applications and then delve into the scripting interface that the author has developed to link Matlab and MagNet.

  • What problems were resolved?

    Large studies of the design space of bearingless motors are challenging without a scripting interface. These challenges include generating hundreds to thousands of MagNet project files for the various design choices, solving all of the design files, extracting meaningful analysis results, and being able to compare the design differences between two files. This talk will present a Matlab scripting interface that the author has developed to overcome these challenges. The scripting interface is able to quickly set up all required simulation files, initiate solves, and extract results. Because the scripting interface is text based, differences in a large design space are easily analyzed using simple text-based diff tools.

  • Technical Level


Eric Severson

Eric Severson – University of Minnesota

Eric Severson received the B.Sc. and PhD degrees in electrical engineering from the University of Minnesota in 2008 and 2015, respectively where he also worked at a post-doc on technology transfer of electric machine technology. He is currently an assistant professor at the University of Wisconsin Madison, within the WEMPEC consortium.

Eric’s research interests include magnetic levitation, electric machine design, power electronics, and flywheel energy storage.