高速永磁电机机组轴系振动研究

PDF(2472 KB)

振动与冲击 ›› 2011, Vol. 30 ›› Issue (9) : 111-115.

论文

高速永磁电机机组轴系振动研究

王天煜1; 王凤翔2; 方程2

作者信息 +

Vibration analysis of shafting for high speed PM machines

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

Author information +

文章历史 +

摘要

高速电机由于体积小、功率密度大和效率高等优点，符合节能减排经济发展需要，成为电机领域的研究热点之一。在高速旋转机械中，转子振动将逐渐成为制约电机正常运行的瓶颈。因此，研究电机的振动特性对于电机的高速可靠运行是非常必要的。电机转子振动的来源主要包括偏心产生的离心力和不平衡磁拉力，采用有限元及Newmark积分法计算转子在不平衡力作用下非线性不平衡响应，用样机振动实验验证计算方法的正确性，通过机组振动实验分析轴系振动产生的原因。研究表明，电机的振动主要为离心力产生基频振动及由于转子动偏心产生的10倍频不平衡磁拉力的振动；其次是2倍频的振动。根据振动产生的主要原因提出相应减小振动的措施。

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.

导出引用

王天煜;王凤翔;方程. 高速永磁电机机组轴系振动研究[J]. 振动与冲击, 2011, 30(9): 111-115

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