Overcoming electro-thermal barriers to achieve extreme performance power conversion for more electric aircraft

Pallo, Nathan Andrew

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https://hdl.handle.net/2142/101087 Copy

Description

Title

Overcoming electro-thermal barriers to achieve extreme performance power conversion for more electric aircraft

Author(s)

Pallo, Nathan Andrew

Issue Date

2018-04-26

Director of Research (if dissertation) or Advisor (if thesis)

Pilawa-Podgurski, Robert C. N.

Department of Study

Electrical & Computer Eng

Discipline

Electrical & Computer Engr

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(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.

Graduation Semester

2018-05

Type of Resource

text

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http://hdl.handle.net/2142/101087

Copyright and License Information

Copyright 2018 Nathan Pallo

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