TY - GEN
T1 - Operating limits for drive condition monitoring using supply current signature analysis
AU - Li, Jing
AU - Sumner, Mark
AU - Arellano-Padilla, Jesus
AU - Asher, Greg
PY - 2011
Y1 - 2011
N2 - A scheme has been proposed whereby the presence of mechanical faults in a variable speed motor drive is detected by monitoring the frequency content of the rectifier input current. This paper provides a detailed theoretical analysis of the proposed diagnostic method to determine the major influences on its resolution and accuracy. These include the influence of the resolution of the data acquisition systems for the controller i.e the analogue to digital controller used for current measurement, and the encoder used for speed measurement are investigated and also the bandwidths of the speed and current controllers, the rectifier and inverter circuit parameters and the motor load. Simulation results are used to demonstrate the limitations imposed by these drive characteristics and it is seen that the resolution of the speed encoder has the major influence on the diagnostic method.
AB - A scheme has been proposed whereby the presence of mechanical faults in a variable speed motor drive is detected by monitoring the frequency content of the rectifier input current. This paper provides a detailed theoretical analysis of the proposed diagnostic method to determine the major influences on its resolution and accuracy. These include the influence of the resolution of the data acquisition systems for the controller i.e the analogue to digital controller used for current measurement, and the encoder used for speed measurement are investigated and also the bandwidths of the speed and current controllers, the rectifier and inverter circuit parameters and the motor load. Simulation results are used to demonstrate the limitations imposed by these drive characteristics and it is seen that the resolution of the speed encoder has the major influence on the diagnostic method.
KW - condition monitoring
KW - detection limitation
KW - fault signal propagation
KW - motor drives
UR - http://www.scopus.com/inward/record.url?scp=80052584947&partnerID=8YFLogxK
U2 - 10.1109/IEMDC.2011.5993851
DO - 10.1109/IEMDC.2011.5993851
M3 - Conference contribution
AN - SCOPUS:80052584947
SN - 9781457700613
T3 - 2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011
SP - 412
EP - 417
BT - 2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011
T2 - 2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011
Y2 - 15 May 2011 through 18 May 2011
ER -