Anna G. Stefanopoulou is a Professor at the Mechanical Engineering Department at the University of Michigan and the Director of the Automotive Research Center, a university-based US Army Center of Excellence on Modeling and Simulation of Ground Vehicles. She is an ASME and an IEEE Fellow, elected member of the ASME DSCD executive committee and the IEEE Control System Society Board of Governors. She was the founding chair of the ASME DSCD Energy Systems Technical Committee and a member of a U.S. National Research Council committee on Vehicle Fuel Economy Standards. She has co-authored a book on Control of Fuel Cell Power Systems, 15 US patents, 5 best paper awards and more than 250 publications on estimation and control of internal combustion engines and electrochemical processes such as fuel cells and batteries.
Models for Mastering the Mysterious World of Ions in Electro-Mobility
Maximizing the utilization of lithium-ion batteries and fuel cells relies on accurate prediction of their complex electrochemical, thermal and mechanical behavior. In this presentation, we will highlight key innovations for such a model-predictive management system.
- Evaluating the accuracy of electrochemical models by using neutron imaging as in situ measurement of liquid water clogging fuel cell channels or the lithium concentration creating damaging overpotentials along the anode and cathode of battery electrodes
- Inner-cell temperature estimation and associated monitoring of cell aging using non-uniform forgetting factors to capture the long term resistance growth.
- Novel State of Charge (SOC) and State of Health (SOH) estimation augmented by bulk stress measurements utilizing the observed cell signature during lithium intercalation and thermal expansion.
- Fast and energy conscious warm-up from subzero temperatures.