دانلود رایگان مقاله انگلیسی آزمون و ارزیابی اثر عدم تعادل ولتاژ موتور بر ارتعاش موتور - نشریه IEEE

Abstract

There have been many discussions on the importance of balanced power supply for both best performance and for lower vibration during operation of industrial motors in petrochemical duty and related installations. Results of tests that were conducted on several low-voltage IEEE 841 motors to observe the effect on vibration due to unbalanced power supply will be presented. Various increments of voltage imbalance from 1% up to 10% were tested and monitored on several pole speeds. This paper will present actual test data collected, along with a discussion on how these results relate and impact the various vibration testing and operational conditions provided within industry standards.

VI. CONCLUSION

As has been shown, electric motor performance is influenced by power supply. It is evident that motors operated in environments that do not provide a well-balanced power supply will be adversely affected. Motors supplied with an unbalanced voltage have been shown to have elevated vibration levels, levels that may cause an undesirable operational condition for the motor and the driven equipment. It is recommended that voltage balance be validated as part of any investigation, and if voltage unbalance is viewed as a contributing factor to motor vibration, remedial action should be taken. Working with the local utility and with electrical distribution at the facility are two ways to improve the voltage balance. If issues persist, an adjustable speed drive may be used to eliminate the voltage unbalance to the motor.