笼型感应电动机转子断条和开裂的故障诊断和在线监测

Faults Detection and On-line Diagnosis in Squirrel Cage Induction Motors with Broken Bars and End Ring Connectors

分析了笼型感应电动机转子故障时导条断条和端环断裂的物理模型 ,给出了电动机的定转子绕组的参数计算表达式 ,建立了数学模型 ,从而导出转子故障时的电流和频谱分析。本文分析了电动机在故障时 ,在dqn任意速坐标系中 ,电动机定子电流的轨迹 ,为电动机的故障诊断和在线监测提出了一种新的方法 ,较以往的电流监测方法更有利于克服边频带的影响。

Rotor faults model in squirrel cage induction motors with broken bars and end ring connector is presented.The calculation of parameters and mathematical model on rotor faults in cage induction motor is given.A new method based on so called Park's vector approach is developed to detect broken rotor bars and end ring connectors for cage induction motor.The generality of the proposed methodology has been tested on 2 2kW squirrel cage induction motor.The obtained result agrees with experimenter.