Thermal‑structural coupling analysis of motor rotor under extreme variable working conditions

Lian-Ge He; Xin-Yang Wu; Wen-Jun Shi; Bin Zhang; Zhou Yuan

Thermal‑structural coupling analysis of motor rotor under extreme variable working conditions

Vol. 22, No. 10, pp. 1713-1722, Oct. 2022

10.1007/s43236-022-00485-z

Extreme variable working condition

Vehicle motor

Thermal-structural coupling

Finite element

Abstract

Extreme variable working conditions were proposed, and the thermal-structural coupling analysis of the rotor was conducted with an electric drive system as the research object to make the structural strength of the rotor of a vehicle motor satisfy all operating conditions as much as possible. The overall temperature rise characteristics of the electric drive system were obtained through simulation, and the accuracy of simulation results was verified through testing. On the basis of material tests at different temperatures, the interference fit, and the rotating centrifugal force as loads, a comparative analysis of the strength of the rotor was conducted for variable working conditions and single working conditions. Results show that the stress value in the variable working condition is 74.9 MPa greater than that in the single working condition. This finding indicates that the analysis of rotor stresses under variable working conditions has more engineering importance.

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Cite this article

[IEEE Style]

L. He, X. Wu, W. Shi, B. Zhang, Z. Yuan, "Thermal‑structural coupling analysis of motor rotor under extreme variable working conditions," Journal of Power Electronics, vol. 22, no. 10, pp. 1713-1722, 2022. DOI: 10.1007/s43236-022-00485-z.

[ACM Style]

Lian-Ge He, Xin-Yang Wu, Wen-Jun Shi, Bin Zhang, and Zhou Yuan. 2022. Thermal‑structural coupling analysis of motor rotor under extreme variable working conditions. Journal of Power Electronics, 22, 10, (2022), 1713-1722. DOI: 10.1007/s43236-022-00485-z.