关键词: 转子动力学, 临界转速, 不平衡响应, 电机, 混合动力汽车

Abstract:

Analysis model of hybrid transmission system was established, and motor rotor dynamics was analyzed in detail. The result showed that gear box flexibility had important effect on rotor system modal, rotor system modal frequency increased with bearing radical stiffness increasing. Critical speed of motor rotor was 17 340 r/min and 18 660 r/min in no-load case and heavy load case respectively. By testing prototype, no resonance caused by unbalanced mass was found, which was accordant with the calculation. The research is helpful to develop hybrid system.

Key words: rotor dynamics, critical speed, unbalanced response, motor, hybrid car