Study of broken bars in three‐phase squirrel‐cage induction motors at standstill. (9th May 2012)

• Record Type: Journal Article
• Authors: Xie, Ying; Gu, Chenglin; Cao, Wenping
• Is Part Of: International transactions on electrical energy systems. Volume 23:Number 7(2013:Oct.)
• Page Start: 1124
• Page End: 1138
• Publication Date: 2012-05-09
• Subjects: induction motors -- broken rotor bars -- fault diagnosis -- magnetic field -- finite‐element methods; Electric power -- Periodicals; Electric power systems -- Periodicals; Electrical engineering -- Periodicals; 621.3
• DOI: 10.1002/etep.1642
• Languages: English
• ISSNs: 2050-7038

Abstract

SUMMARY: This paper investigates the characteristic performance of broken bar faults in induction motors at standstill by 2D time‐stepping finite‐element and experiential approaches. Three identical rotors with the same stator are employed to generate one healthy‐rotor, one‐broken‐bar and two‐broken‐bar fault cases in a three‐phase 1.1‐kW squirrel‐cage induction motor. The focus is placed on how the broken bar affects air‐gap flux density, stator and rotor currents, torque and magnetic force, as well as iron and rotor bar losses. Numerical results are validated by some experimental measurements obtained from a dedicated test rig. Copyright © 2012 John Wiley & Sons, Ltd.