ECE Distinguished Research Lecture Series – Faculty of Engineering

Common Mode EMI Emissions and Mitigation Techniques for Wide Bandgap-based Power Electronic Drives

5th Distinguished Research Lecture Series – Dr. Bulent Sarlioglu


Wide bandgap devices are becoming important for power electronics for many reasons, including increasing efficiency and reducing weight and volume. Due to the high switching speeds of these new semiconductor devices, there can be severe EMI issues for electronic converters powering electric motors in electric vehicles and appliances, including common-mode emissions, motor terminal voltage ringing, and bearing currents. This talk will focus on the problems and the potential solutions for SiC and GaN power electronics. It will explain how common-mode emissions occur, how we define the common-voltage spectrum as a function of switching frequency, and how the high dv/dt voltages increase the common-mode emissions. Different EMI mitigation techniques will be discussed through experimental examples, including new power electronic inverter topologies.


Dr. Bulent Sarlioglu, Professor at the University of Wisconsin-Madison

Bulent Sarlioglu is a Professor at the University of Wisconsin-Madison and the Technology and Collaboration Director of the Wisconsin Electric Machines and Power Electronics Consortium (WEMPEC). From 2000 to 2011, he was with Honeywell International Inc.’s Aerospace Division, Torrance, CA, USA. His expertise includes electrical machines, drives, and power electronics for electrifying transportation and industrial applications. He is the inventor/co-inventor of 22 U.S. patents and many international patents as well as more than 300 peer-reviewed publications. Dr. Sarlioglu is a fellow of the National Academy of Inventors and an IEEE Fellow.

Event details

Speaker: Dr. Bulent Sarlioglu

Topic: Common Mode EMI Emissions and Mitigation Techniques for Wide Bandgap-based Power Electronic Drives

Date: Monday, May 6, 2024

Time: 11:00 a.m. – 1:30 p.m.

Time Activity
11:00 a.m. – 12:00 p.m.Lecture
12:00 p.m. – 1:30 p.m.Networking

Location: McMaster Automotive Resource Centre (MARC), Room 226, 200 Longwood Road South, Hamilton ON L8P 0A6

Please note this is an in-person speaker series event only.

Following the speaker presentation, join us for an hour of networking. Pizza and refreshments will be provided.