Development of Induction Motor Fault Diagnosis Test Bed
Induction motor is the most common electrical equipment which plays an important role in national production activi-ties.Motor fault diagnosis can effectively reduce the accident rate and enterprise operation cost,and it is very useful to study it.Taking squirrel cage induction motor as the research object,one fault diagnosis experimental test bed was completed based on the selection of motor and load,fault setting and electrical system design where the voltage and current are selected as the basic analysis signals.Then three different motor faults such as air gap,rotor broken bar,and turn-to-turn short circuit are analyzed based on the test bed.The results show that there are fault characteristic near 25Hz and 75Hz frequency when the motor has air-gap faults while there are fault characteristic near 44.9Hz,45.9Hz,54.1Hz,and 55.1Hz when the motor has rotor broken bar fault.It also shows that the flat degree of motor current Park chart is higher and higher with the incensement of fault degree when the motor has turn-to-turn short circuit fault.
NETL
NSTL
万方数据
维普
