Evaluation of internal defects in squirrel cage rotor by novel Hall sensor technique

Author

Lee, Joon-Hyun ; Choi, Sang-Woo ; Park, Mpng-Joo

Author_Institution

Sch. of Mech. Eng., Pusan Nat. Univ., South Korea

Volume

3

fYear

2001

fDate

2001

Firstpage

1929

Abstract

A nondestructive evaluation technique based on novel Hall sensor technique for detecting internal flaws in aluminum die-cast squirrel cage rotors has been developed. Electric currents are supplied to both sides of end-rings of the rotor and the variation of currents which flow in the bar of the rotor has been measured by the Hall sensor technique. Some signal processing techniques have been introduced to classify the signals due to the defects in the bars of the rotor from the measured signals. The effect of depth and size of artificial defect on the variation of signals has also been investigated

Keywords

Hall effect transducers; aluminium; nondestructive testing; rotors; signal classification; squirrel cage motors; Hall sensor technique; aluminum die-cast squirrel cage rotors; artificial defect depth; artificial defect size; electric currents; internal defects evaluation; internal flaws detection; measured signals; nondestructive evaluation technique; rotor bars defects; rotor end-rings; signal processing techniques; signals classification; squirrel cage rotor; Aluminum; Current measurement; Electric variables measurement; Electrical resistance measurement; Magnetic field measurement; Magnetic flux; Magnetic flux density; Mechanical sensors; Rotors; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2001. Proceedings. ISIE 2001. IEEE International Symposium on

Conference_Location

Pusan

Print_ISBN

0-7803-7090-2

Type

conf

DOI

10.1109/ISIE.2001.932007

Filename

932007