Vibration analysis of shafting for high speed PM machines

PDF(2472 KB)

Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (9) : 111-115.

论文

Vibration analysis of shafting for high speed PM machines

WANG Tian-yu1; WANG Feng-xiang2; Cheng Fang2

Author information +

History +

Abstract

The high speed machine, due to its small size, high power density and high efficiency, meeting the economy development needs of low-carbon and energy saving, is one of the great concerns in electrical engineering. Vibration is the bottleneck of stable operation for high-speed machine. Therefore, it is necessary to study vibration for the reliable operation of high-speed machine. Rotor vibration sources include mainly the centrifugal force generated by eccentricity and unbalanced magnetic pull. The combined FEA and Newmark method is used to calculate the non-linear unbalance response due to the unbalanced force. The simulation results of different vibration frequencies are verified by tests. Studies have shown that the vibration frequencies of machine are mainly the fundamental frequency composition caused by eccentricity and 10 frequency-doubled due to unbalanced magnetic pull caused by dynamic eccentricity. Vibration amplitude of 2 frequency-doubled is more significant. The corresponding measures to reduce vibration are proposed according to vibration analysis.

Key words

high speed machine / non-linear vibration / unbalance response analysis / unbalanced magnetic pull / finite element method

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

WANG Tian-yu;WANG Feng-xiang;Cheng Fang. Vibration analysis of shafting for high speed PM machines[J]. Journal of Vibration and Shock, 2011, 30(9): 111-115