RT Journal Article
A1 Liang-Liang Chen
A1 Chang-Sheng Zhu
A1 Zhixian Zhong
A1 Bin Liu
A1 Anping Wan

PB iet
T1 Rotor strength analysis for high-speed segmented surface-mounted permanent magnet synchronous machines
JN IET Electric Power Applications
VO 12
IS 7
SP 979
OP 990
AB This study is concerned with the unified analytical solution of rotor strength for the segmented permanent magnet (PM) rotor retained by the carbon-fibre sleeve and non-magnetic alloy sleeve in high-speed surface-mounted permanent magnet synchronous machine. Considering the influence of different densities and coefficients of thermal expansion of PMs and pole fillers on rotor stress, the analytical solution for rotor strength was proposed based on displacement method and stress potential method in polar coordinate. The proposed analytical solution was validated by the finite-element method (FEM) and experiment, respectively, and the influences of rotational speed, retaining sleeve thickness and interference fit between the retaining sleeve and PMs on rotor strength were further investigated based on the analytical solution proposed. It is shown that the results calculated by the proposed analytical solution and the FEM are in good agreement with each other, and the analytical solution can accurately predict the stress distributions of the segmented PM rotor retained by the carbon-fibre sleeve and non-magnetic alloy sleeve. The difference in density and coefficient of thermal expansion between PM and pole filler, rotational speed and operating temperature have great effects on rotor strength.
K1 segmented permanent magnet rotor
K1 sleeve thickness
K1 high-speed segmented surface
K1 segmented PM rotor
K1 unified analytical solution
K1 retaining sleeve
K1 permanent magnet synchronous machines
K1 interference fit
K1 rotational speed
K1 rotor strength analysis
K1 rotor stress
K1 carbon-fibre sleeve
K1 thermal expansion
K1 high-speed surface
DO https://doi.org/10.1049/iet-epa.2017.0686
UL https://digital-library.theiet.org/;jsessionid=4wgnf1oabode8.x-iet-live-01content/journals/10.1049/iet-epa.2017.0686
LA English
SN 1751-8660
YR 2018
OL EN