TY - GEN
T1 - Study of a High-speed Outer Rotor Burst Containing Enclosure
AU - Lin, Lianshan
AU - Barua, Himel
AU - Rallabandi, Vandana
AU - Kumar, Praveen
AU - Ozpineci, Burak
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - 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.
AB - 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.
KW - burst containing
KW - finite element simulation
KW - high-speed outer rotor
KW - impact dynamics
KW - material damage
UR - http://www.scopus.com/inward/record.url?scp=85200705633&partnerID=8YFLogxK
U2 - 10.1109/ITEC60657.2024.10599013
DO - 10.1109/ITEC60657.2024.10599013
M3 - Conference contribution
AN - SCOPUS:85200705633
T3 - 2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024
BT - 2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2024 IEEE Transportation Electrification Conference and Expo, ITEC 2024
Y2 - 19 June 2024 through 21 June 2024
ER -