Study of a High-speed Outer Rotor Burst Containing Enclosure

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The increasing demand for high-speed electric machines in many applications pushes the development of high-power density electric motors. Outer rotor motors, which can be designed with a larger airgap diameter than inner rotor motors for the same overall diameter and, therefore, provide higher torque, distinguish themselves in space-constrained but high torque applications. However, increasing the motor speed and diameter results in significant centrifugal loads for the outer rotor motor due to its higher airgap diameter. Additional attention must be paid at the design stage to consider the extreme situation of possible mechanical failure, such as the sudden burst of the high-speed rotating parts in the motor, and measures must be taken to prevent their damage to other system components in advance. Through the finite element dynamic impact analysis, we studied the damage caused by broken parts on the inner wall of the electric motor housing when the motor rotates at 20,000 RPM. The proposed method is expected to provide reasonable recommendations of the enclosure material and its thickness required to protect other components in the same powertrain system when the high-power density motor fails unexpectedly.

Original languageEnglish
Title of host publication2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350317664
DOIs
StatePublished - 2024
Event2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024 - Chicago, United States
Duration: Jun 19 2024Jun 21 2024

Publication series

Name2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024

Conference

Conference2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024
Country/TerritoryUnited States
CityChicago
Period06/19/2406/21/24

Keywords

  • burst containing
  • finite element simulation
  • high-speed outer rotor
  • impact dynamics
  • material damage

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