【摘要】 建立了电机定转子耦合的刚体模型,针对电机变频启动时,电流存在高次谐波的情况,推导求解了高次谐波磁势,得到了电磁力的多种成分.分析了电磁刚度对系统固有频率的影响,对系统垂直与水平振动相耦联的非线性共振进行了研究,得到了系统的一次近似解及稳态响应曲线,讨论了电磁参数和质量对共振的影响.更多还原

【Abstract】 A coupling rigid model for the generator stator and rotor was established.When the generator starts up in frequency conversion,there is high harmonic in electricity.In this condition,high harmonic magnetometive force was expressed and the component parts of electro-magnetic force were obtained.Then the effect of electro-magnetic stiff on the inherent frequency was analyzed.The nonlinear vibration of the vertical and horizontal coupling was studied,the first approximation solution and its corresponding steady-state solution were acquired,and the effect of electromagnetic damping and mass on resonance.更多还原