Detection of mixed air gap eccentricity in closed-loop drive-connected induction motors

Author

Huang, Xianghui ; Habetler, Thomas G.

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

fYear

2003

fDate

24-26 Aug. 2003

Firstpage

312

Lastpage

316

Abstract

This paper focuses on the detection of mixed air gap eccentricity in closed-loop drive-connected induction motors. The influence of speed and current PI controllers on the fault detection is considered together with the load oscillation. For high detection sensitivity and accuracy, this paper points out that the monitoring of low frequency harmonics in the stator voltage and high frequency harmonics in the stator current in suitable reference frame should lie combined together. The simulation and experimental results are included to verify the feasibility of the proposed detection scheme.

Keywords

air gaps; angular velocity control; closed loop systems; electric current control; fault diagnosis; finite element analysis; harmonic analysis; induction motor drives; machine vector control; oscillations; stators; two-term control; 460 V; 7.5 hp; 70.87 kW; FEM; closed-loop drive-connected induction motors; current PI controllers; fault detection; high detection sensitivity; high frequency harmonics; indirect field oriented control; load oscillation; low frequency harmonics; mixed air gap eccentricity detection; monitoring; speed PI controllers; stator current; stator voltage; Fault detection; Frequency; Induction motors; Monitoring; Power harmonic filters; Pulse width modulation inverters; Rotors; Stators; Torque; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Diagnostics for Electric Machines, Power Electronics and Drives, 2003. SDEMPED 2003. 4th IEEE International Symposium on

Print_ISBN

0-7803-7838-5

Type

conf

DOI

10.1109/DEMPED.2003.1234592

Filename

1234592