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Design and Optimization of Power and Energy Systems for Naval Vessels

Friday, March 10, 2017, 11:00 AM
Nedderman Hall Room 112

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EE Seminar Speaker Series

Daniel Opila, Ph.D.

Assistant Professor of Electrical and Computer Engineering
U.S. Naval Academy

11 a.m., Friday, March 10
Nedderman Hall Room 112

Abstract: Naval vessels have experienced rapid growth in power demand with the addition of high-power mission loads, as well as an increased focus on fuel efficiency. These trends led to ships with integrated electric propulsion and power systesm, as on the UK’s Type 45 and the U.S. DDG-1000-class destroyers. Future weapons and sensors present increasing demands and lead to requirements for energy storage. This talk will address the design and control of these shipboard power systems. Compared to a traditional power system, shipboard systems can be AC or DC distribution, have much higher ramp rates, lower system inertia, and very high penetrations of power electronics, all with generation equivalent to a small city. The inclusion of dynamic loads, generator ramp rate limits, transmission constraints, and energy storage requires optimization and control methods that consider future events. This presents a challenging co-design problem as the relative merit of a system design depends on the controller, so a specific control system must be designed to evaluate each candidate architecture. This is a slow process with undefined outcomes. We instead consider the limiting case where the controller has exact knowledge of future loads, and solve an optimization problem to determine best-case performance of any possible controller. This bound is not usually achieved in practice, but it allows designers to understand the fundamental limits of system performance and how it can be improved. This automated comparison of system architectures can also be integrated into higher-level ship design optimization.

Bio: Daniel Opila is assistant professor of electrical and computer engineering at the United States Naval Academy. He earned B.S. and M.S. degrees from Massachusetts Institute of Technology in 2002 and 2003, and his doctoral degree from the University of Michigan in 2010. Prior to joining the Naval Academy, he was a senior research and development engineer at GE Power Conversion, focusing on utility-scale solar power generation and naval electric power systems and propulsion. He has held positions at Ford Motor Company, Orbital Sciences Corporation, and Bose Corporation. Opila specializes in the design and control of energy systems, with applications in power systems (marine, naval, terrestrial and microgrid), transportation, power converters, and renewables. He is a licensed Professional Engineer in Pennsylvania.

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