A novel approach for broken-rotor-bar detection in cage induction motors

Author

Milimonfared, Jafar ; Kelk, Homayoun Meshgin ; Nandi, Subhasis ; Minassians, A.D. ; Toliyat, Hamid A.

Author_Institution

Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran, Iran

Volume

35

Issue

5

fYear

1999

Firstpage

1000

Lastpage

1006

Abstract

In this paper, a new approach is proposed to detect broken rotor bars in induction motors. The motor is disconnected from the supply, and the induced voltage in the stator due to only rotor flux is utilized to detect the fault. If there is any broken bar, it will directly affect the induced voltages in the stator windings. Using this approach, the effects of source nonidealities (such as unbalance, presence of time harmonics, etc.) and nonlinearity of machine magnetizing characteristics due to saturation can be avoided

Keywords

electrical faults; electromagnetic interference; fault diagnosis; machine testing; machine theory; monitoring; rotors; squirrel cage motors; stators; broken-rotor-bar detection; cage induction motors; fault detection approach; magnetizing characteristics; rotor flux; saturation; source nonidealities; stator winding induced voltages; time harmonics; unbalance; Bars; Fault detection; Induction motors; Magnetic flux; Residual stresses; Rotors; Saturation magnetization; Stators; Thermal stresses; Voltage;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.793359

Filename

793359