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Title: Aviation Mission Profile Performance Evaluation in a High Specific Power Surface Permanent Magnet Machine with Additively Manufactured Coils and Integrated Heat Pipes

Conference ·

The purpose of this paper is to accurately evaluate the performance and overall efficiency of an electrical machine driving a propeller (as a part of a hybrid or electric propulsion system) during the flight mission profile using electromagnetic-thermal simulations. The study focuses on a 250 kW, 5000 rpm, 1.25 kHz, 36/30 slot/pole surface permanent magnet (SPM) machine with additively manufactured (AM) hollow conductors and integrated heat pipes (HP). The machine drive parameters (frequency, and current) are tuned to maximize the efficiency for a given flight cycle, while providing the highest specific power (SP) during takeoff. Afterward using Multiphysics simulations, the transient thermal behavior of the machine is studied and temperature profile for different parts of the machine is extracted. Finally, steady-state temperatures during cruising are estimated and overall efficiency is re-evaluated.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
DOE Contract Number:
AC36-08GO28308
OSTI ID:
2203527
Report Number(s):
NREL/CP-5400-85750; MainId:86523; UUID:1fe2de9d-c622-4f75-bc04-851e7eb34536; MainAdminID:70938
Resource Relation:
Conference: Presented at the 2023 IEEE International Electric Machines & Drives Conference (IEMDC), 15-18 May 2023, San Francisco, California
Country of Publication:
United States
Language:
English

References (9)

Electrical Characteristics of Additively Manufactured Hollow Conductor Coils with Integrated Heat Pipes for Electric Aircraft Applications conference October 2022
A Comprehensive Characterization of Hollow Conductor Additively Manufactured Coils and Thermal Management System for a 250kW SPM Machine conference September 2022
Electric aviation: A review of concepts and enabling technologies journal September 2022
Minimization of Winding AC Losses Using Inhomogeneous Electrical Conductivity Enabled by Additive Manufacturing journal May 2022
Thermal Management System for an Electric Machine with Additively Manufactured Hollow Conductors with Integrated Heat Pipes conference September 2022
Additively Manufactured Hollow Conductors Integrated With Heat Pipes: Design Tradeoffs and Hardware Demonstration journal July 2021
High specific power electrical machines: A system perspective conference August 2017
Design and Comparison of Direct-Drive and Geared High Specific Power Permanent Magnet Motors for Aerospace Applications conference October 2022
Study of the Current Ripple Effect of a Modular Machine Drive on Torque Ripple and Losses foran SPM Machine with Additively Manufactured Hollow Conductor Coils conference September 2022