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Electric Aircraft Propulsion Power System Impedance Modelling MethodologyThis paper describes techniques to be used to model megawatt Electrified Aircraft Propulsion (MW EAP) components, specifically motor/generators and inverters, DC-DC converters, and long power leads; resulting in impedance-based models which require no information from the component manufacturers. A custom curve fitting method is described, and an example power supply model is fit using measured impedance data. A method called subscale measurement, employing measurement equipment which has much lower power capability than the MW EAP system under test, is described, simulated, and used to generate an impedance transfer function model of a load. Finally, stability analysis using a Nyquist based approach is performed on the combined supply and load system, using the generated models.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Peter Kascak
(Glenn Research Center Cleveland, Ohio, United States)
Timothy Dever
(Glenn Research Center Cleveland, Ohio, United States)
Ralph Jansen
(Glenn Research Center Cleveland, Ohio, United States)
Date Acquired
June 8, 2021
Subject Category
Aircraft Propulsion And Power
Meeting Information
Meeting: 2021 AIAA/IEEE Electric Aircraft Technologies Symposium (EATS)
Location: Denver, CO
Country: US
Start Date: August 11, 2021
End Date: August 13, 2021
Sponsors: American Institute of Aeronautics and Astronautics, Institute of Electrical and Electronics Engineers
Funding Number(s)
WBS: 081876.
Distribution Limits
Work of the US Gov. Public Use Permitted.
Technical Review
Single Expert
Megawatt electrified aircraft propulsion
power system stability
power system model
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