Thursday, April 6th 3:30 pm DUE 0093
Distributed Control Architecture for Multi-Agent Smart Grids
Masoud H. Nazari
Assistant Professor, California State University Long Beach
Today’s power systems are operated and controlled in a centralized way, under which monitoring and control tasks are handled at different hierarchical levels. However, emerging technologies, such as distributed energy sources, electric vehicles, and energy storage devices, pose new challenges to the operation and control of legacy power systems due to the increased scale and complexity. To overcome these challenges, it is envisioned that future, smart grids will be populated with multiple hybrid producer-consumer agents. These economically motivated agents are called prosumers, which can make strategic decisions empowered by a cyber-layer superposed on top of the physical grid. Under the prosumer-based framework, smart grids will be operated and controlled in a distributed way. The challenges are thus how to gracefully extend the current control and management paradigm to power grids comprised of thousands of prosumers. In this seminar, I will discuss my recent efforts to address one particular, technical aspect of the multi-agent smart grids, namely the frequency regulation problem. I will present a distributed architecture for frequency regulation and address the problem of how thousands of sparsely located prosumers can regulate frequency in a distributed and robust manner.
Masoud H. Nazari is an Assistant Professor of Electrical Engineering at California State University, Long Beach (CSULB). His background is in power systems and smart grid. Prior to joining CSULB, he was a Post-Doctoral Fellow in Electrical Energy at the Georgia Institute of Technology. He received his PhD from Carnegie Mellon University in 2012. He was also a visiting PhD student at the Massachusetts Institute of Technology in 2010. Dr. Nazari has over thirty publications in the areas of smart grid and power systems. He leads a recently funded $2.5M demonstration project by California Energy Commission to implement, demonstrate, and evaluate an IoT-based energy management system in a large academic building.
Friday April 7th 3:30 pm DUE 0093
Reliability of Electric Machine and Power Electronics System in Transportation and General Power Grid System Applications
Dr. Seungdeog Choi
Assistant Professor, University of Akron
Due to environmental issues such as global warming and air pollution, the demand for green energy system has been dramatically increasing in the world energy market. Electric motors and power electronics system play a vital role in green energy system in applications to hybrid and electric vehicle (HEV/EV), alternative/renewable energy generation system, more electric aircraft, Oil and Gas equipment, etc where the reliability is one of the critical issues.
Nowadays, almost all electric energy systems are equipped with an onboard diagnosis system and fault tolerant / recovery capability. This system has been used for warnings and monitoring critical failures. If a problem or malfunction is detected, then the diagnosis system sets a malfunction indicator light that is readily visible to the operator on the dashboard to inform that a problem exists. This health monitoring system is a valuable tool that assists in the service and repair by providing a simple, quick, and effective way to pinpoint problems by retrieving vital diagnostics. This presentation provides semi in-depth degradation analysis and fault diagnosis of (i) general electric motor and (ii) power electronics system, and (iii) the brief overview of the PI’s current and related sponsored or pending projects.
Dr. Seungdeog Choi has received his B.S. degree from Chung-Ang University, South Korea in 2004, M.S. degree from Seoul National University, South Korea in 2006, respectively both in Electrical Engineering. He has earned Ph.D. degree in electric power and power electronics program at Texas A&M University – College Station in 2010. Currently, he is an assistant Professor in Electrical and Computer Engineering Department at The University of Akron, Ohio. He has more than 70 peer-reviewed papers (published/pending) in IEEE journals and conference proceedings, seventeen patents (registered/pending/provisional), and one co-authored book. He was with Toshiba International Co. as R&D engineer on electric machine drive system from 2009 ~ 2012 and LG Electronics as communication signal processing engineer on international standardization of 4G LTE system from 2006 ~ 2007. He is currently involved in several multi-university projects as the PI of the University of Akron team in related to Turbo Electric Aircraft and Intelligent Aviation Power System. His area of research interest includes condition monitoring, diagnosis, and stochastic degradation modeling of power electronics and electric machine system in transportation or general power grid application.