Date(s) - 6 Apr 2021 until 6 Apr 2021
1:00 PM - 2:00 PM
This event will be held virtually.
Speaker: James Cale, Colorado State University
Title: Analysis and Characterization of Power- Magnetic and -Electronic Devices for Microgrid and Next-Generation Building Designs
Abstract: The desire for increased energy sustainability and enhanced resilience on the electrical grid has led to considerable interest in microgrid power systems and grid-interactive efficient buildings (GEBs). These systems are typically composed of a combination of traditional load and generation with power-electronic based distributed energy resources such as photovoltaic generators, wind turbine systems, and energy storage. The high penetration of power-electronic devices commonly used in microgrids and GEBS—along with the trend towards a larger proportion of DC loads—can introduce power quality issues, particularly in the case of fully-islanded microgrids. This talk describes several research projects in the detailed analysis and characterization of nonlinear power -magnetic and -electronic devices for microgrid and GEB applications, conducted at Colorado State University. Research in modeling and characterization of highly-inductive, nonlinear loads for rural minigrid applications is described, including the identification of parameters for closed-form anhysteretic magnetization of these devices from in situ measurements and a nonlinear optimization approach. Also discussed is modeling and characterization of nonlinear device-specific behavioral functions for computing harmonic current injections in GEB electrical networks, within a harmonic power flow framework. The latter research has been included in a new open source software package, the Building Energy Efficiency Analysis Model (BEEAM), implemented in Modelica and developed under a Department of Energy grant.
Bio: Dr. James Cale is an associate professor at Colorado State University in the Systems and Electrical & Computer Engineering Departments. His research focuses on energy conversion, power electronic drive systems, computational and applied electromagnetics, nonlinear optimization methods, hardwarein-the-loop and microgrids. At CSU he teaches courses in power engineering, electrical machinery, and grid integration of wind energy systems. Prior to joining CSU he led the Distributed Energy Systems Integration Group at the National Renewable Energy Laboratory and worked in senior power engineering roles at Advanced Energy and Orbital ATK. He earned his doctorate in electrical engineering from Purdue University (with honors) and bachelors degree in electrical engineering (summa cum laude) from Missouri University of Science & Technology. He is a Senior Member of IEEE, member of Tau Beta Pi, and serves as editor on the IEEE Open Access Journal of Power and Energy.
EPRC Host: Hugo Villegas Pico