用机电耦合模型研究转子系统的非平稳过程

建立恰当的转子系统模型，对非平稳过程进行正确完备的描述是进行转子系统设计、实施状态监测和故障诊断的关键。通过考虑驱动电机的影响，建立了异步电机-受驱转子系统的机电耦合数学模型，并利用该模型对机电转子系统由串联补偿电容和负载波动引起的两种机电耦合非平稳过程进行了数值研究。研究结果表明：建立的机电耦合模型可以多方位地研究转子系统在非平衡过程中的机电耦合动力学规律。

Studying Non-Stationary Pocesses of Rotor Systems Based on an Electromechanical-Coupling Model

Establishing a suitable model of rotor systems which displays non-stationary pr ocesses correctly and effectively is a key for system design, condition mon itoring and fault diagnosis of rotor systems. In this paper the effects of motor on rotor systems is considered and an electromechanical-coupling model is eata blished. By simulating two typical transient processes such as self-excited osc illations caused by serious-wound capacitors in power network, and twisting vib ration resulted by loads changing, a conclusion was proved that the electromech anical-coupling model is very useful in analyzing dynamical principles of non- stationary processes.