Joseph Lentz, Research Scientist, Lab Manager
Joseph Lentz graduated from UW-Milwaukee with a master’s degree in electrical engineering in 2024, which he completed at the Center for Sustainable Electrical Energy Systems. His research focused on maximizing the power density and efficiency of wide band gap (WBG) power semiconductors despite challenges posed by increased high-frequency emissions. As part of his research, he constructed an electromagnetic interference (EMI) test bench, developed and validated common-mode-equivalent models, and performed EMI analysis. He previously developed a common-mode model for Starship inverters on the Avionics EMI team at SpaceX. Prior to that, he worked as an electrician supervisor for the U.S. Navy, managing a shop of electricians repairing and maintaining Boeing 737 planes. Outside of the lab, he enjoys kayaking, snowboarding and fixing cars.
Dr. Ali Moghassemi, Postdoctoral Researcher
Dr. Moghassemi received the B.S. and M.S. degrees in electrical engineering from the Islamic Azad University, South Tehran Branch, Tehran, Iran, in 2012 and 2015, respectively, and the Ph.D. degree in electrical engineering from Clemson University, Clemson, SC, USA, in 2025. He is currently a Research Scientist at the University of Wisconsin–Milwaukee. Dr. Moghassemi has authored and coauthored several peer-reviewed journal and conference papers, two book chapters, and one book. His research interests include modeling, simulation, and control of power electronic converters for renewable energy systems, electrified transportation, and custom power devices. He was the recipient of two Outstanding Graduate Researcher Awards in 2025: one from the Holcombe Department of Electrical and Computer Engineering (department-wide) and another from Clemson University (university-wide). Dr. Moghassemi also serves as a reviewer for several scientific journals and conferences.
Dr. Tianchen (James) Li, Postdoctoral Researcher
Tianchen “James” Li, Ph.D., is a postdoctoral researcher at the Center for Sustainable Electrical Energy Systems (SEES) of the University of Wisconsin – Milwaukee. He received the B.S. degree in electrical engineering from the Jiangsu University of Science and Technology in 2010, the M.S. degree in electrical engineering from the University of Kansas in 2013, and the Ph.D. degree from the University of Wisconsin – Milwaukee in 2022.
He is a versatile engineer with more than ten years of teaching, academic research, and industrial engineering experience in the electromagnetic compatibility of radio-frequency applications, large complex systems, and power electronics-enabled systems. His current research interests include common-mode and radiated EMI modeling of wide-bandgap semiconductor-enabled voltage source converters, partial discharge in WBG semiconductors, and ecological SF6-free high-voltage circuit breakers.
Jacob Zuehl, Research Scientist