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Title:Overcoming electro-thermal barriers to achieve extreme performance power conversion for more electric aircraft
Author(s):Pallo, Nathan Andrew
Advisor(s):Pilawa-Podgurski, Robert C. N.
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:M.S.
Genre:Thesis
Subject(s):more electric aircraft
flying capacitor
thermal
co-design electrically thin
multilevel
propulsion
hardware-in-the-loop
fault detection
observer
real-time
thermal management
additive manufacturing
heat sink
inverter
high specific power
power density
extreme performance
gallium nitride
wide-bandgap
high efficiency
power converter
dc-dc
dc-ac
electro-thermal
Abstract:The National Aeronautics and Space Administration (NASA), in addition to an increasing number of privately funded ventures, has demonstrated growing interest in more electric aircraft (MEA) - flight vehicles where propulsion is partially or totally supplied by electric motors. While hybrid or turbo-electric MEA concepts would still rely on a jet engine power plant to provide electrical power to these electric motors, NASA studies indicate these concepts can result in cleaner, quieter, and more fuel-efficient flight compared to current best-in-class passenger jet aircraft. To achieve this new paradigm in flight, major engineering challenges must be overcome to improve the thermal management, efficiency and power density of the propulsion electronics as well as ensure the high reliability necessary for aviation. This thesis focuses on these challenges in the scope of one block of this electrical system: a high-performance dc-ac converter designed to drive the type of electric machine engineered for electric flight from a high-voltage dc bus that would be present on some MEA concepts. The flying capacitor multilevel topology is demonstrated as an enabling technology for simultaneously achieving high-efficiency and high power-density, with specific consideration given to packaging and implementation. Reliability of the converter is addressed through discussion of on-line health management through the use of a real-time hardware-in-the-loop (HIL) observer.
Issue Date:2018-04-26
Type:Text
URI:http://hdl.handle.net/2142/101087
Rights Information:Copyright 2018 Nathan Pallo
Date Available in IDEALS:2018-09-04
Date Deposited:2018-05


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