电特性检测在电机预防性检修和故障诊断中的应用研究

Application of electrical static characteristics testing for ship electromotor prevention service and fault diagnosis

针对异步电动机目前在预防性检修中存在的电气故障无法运用无损方式进行快速定位的问题,对电机电气参数在故障时的微弱变化进行了研究,提出了电特性检测手段,引入了潘罗斯判据配合电机静态三相平衡的评判准则,采用模糊诊断的方法对电机存在的电气故障进行了判断,实现了对电机可能存在的三相不平衡以及定子、转子绕组短路故障快速诊断;其中,采用Simulink软件仿真,模拟了电机故障,对该方法进行了计算验证,并在实物实验中再次验证了方法的可行性。研究结果和实验结果表明:该方法在不拆解电机的情况下实现了对电机的电气故障检测,能够显著提高故障隐患预估的质量。

Aiming at the electrical faults existing in the preventive maintenance of asynchronous motors,the problem of rapid positioning can t be solved without any damage,the electrical parameters of motor were studied in this paper.This means to detect the electrical characteristics,introduced with the static balance three-phase motor Penrose criterion of judgment criteria,using method of fuzzy diagnosis to judge the electrical motor fault exists,cloud be achieved on the possible existence of unbalanced three-phase motor stator,and rotor winding short circuit fault diagnosis.The simulink software simulation was used to simulate the motor fault,and the method was verified by calculation,and the feasibility of the method was proved again in the physical experiment.The results indicate that this method realizes electrical fault detection of the motor without dismantling the motor case,can significantly improve the prediction quality hidden trouble.