高速永磁电机机组轴系振动研究  

Vibration analysis of shafting of high speed permenant magnetic machinery

作　　者：王天煜[1] 王凤翔[2] 方程[2] 

机构地区：[1]沈阳工程学院机械工程系,沈阳110136 [2]沈阳工业大学电气工程学院,沈阳110870

出　　处：《振动与冲击》2011年第9期111-115,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金重点资助项目(50437010);辽宁省自然科学基金项目(20102161)

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,本文采用有限元及New-mark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。The high speed machinery,due to its small size,high power density,high efficiency and being able to meet 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 of high-speed machinery.The vibration sources of rotor in permanent magnet（PM） machine include mainly the centrifugal force generated by eccentricity and the unbalanced magnetic pull.The FEA combined with Newmark method was used to calculate the non-linear unbalance response due to unbalanced forces.The simulation results for vibrations under different frequencies were verified by tests.Studies show that the vibration frequency components of the machine are mainly the fundamental frequency component caused by eccentricity and the component of 10 times the fundamental frequency due to unbalanced magnetic pull caused by dynamic eccentricity.Vibration amplitude of double frequency component is more significant.The corresponding measures to reduce vibration were proposed accordingly.

关 键 词：高速电机 非线性振动 不平衡响应 不平衡磁拉力 有限元法 

分 类 号：TG4[金属学及工艺—焊接]