NDLI: Limitations on Detecting Rotor Asymmetries from the Measured Currents in Closed Loop Operation

Content Provider	IEEE Xplore Digital Library
Author	Serna, E. Pacas, M.
Copyright Year	2007
Description	Author affiliation: Inst. of Power Electron. & Electr. Drives, Univ. of Siegen, Siegen, Germany (Serna, E.; Pacas, M.)
Abstract	New techniques for the detection of faults in closed- loop drives have been recently developed that need to monitor both motor voltages and currents. This paper investigates the diagnosis of rotor asymmetries in field oriented controlled induction machines based on the measured currents and speed. First, an analysis to elucidate how some characteristic features of the control affect the fault propagation is made. In particular, the influence of the outer and the inner control loops, the EMF and cross coupling terms, the estimated angle of orientation and the resolution of the measured rotor angular position are investigated. Then, different scenarios are designed by means of simulations and experiments, and the limitations of using merely currents for the diagnosis are established. Second, an indicator calculated online from the torque producing current and the orientation angle is used to corroborate the conclusions derived from the previous analysis.
Starting Page	1311
Ending Page	1316
File Size	471051
Page Count	6
File Format	PDF
ISBN	9781424407545
DOI	10.1109/ISIE.2007.4374789
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-04
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Current measurement Rotors Fault detection Monitoring Voltage Induction machines Velocity measurement Position measurement Particle measurements Torque
Content Type	Text
Resource Type	Article

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