Effect of Rotor bar Shape and Stator Slot Opening on the Performance of Three Phase Squirrel Cage Induction Motors with Broken Rotor Bars

2019 Southern African Universities Power Engineering Conference/Robotics and Mechatronics/Pattern Recognition Association of South Africa (SAUPEC/RobMech/PRASA) Pub Date : 2019-01-01 DOI:10.1109/ROBOMECH.2019.8704850

Eveline Makhetha, M. Muteba, D. Nicolae

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引用次数: 4

Abstract

Stator slot opening width has an impact on the airgap magnetic field, a poor choice of this design parameter can results in distorted airgap magnetic field and increased space harmonics. This will have a negative impact on the performance of three phase squirrel cage induction machine (SCIM). Changing the rotor bar shape also varies the resistance at different depths of the bar either increasing or decreasing the electromagnetic torque. The purpose of this paper is to investigate how both the stator slot opening widths and rotor bar shapes affect the performance of SCIMs that operate when healthy and when their rotor bars are broken. 2D Finite Element Method (FEM) is employed as a computational tool for modelling these SCIMs and the magnetostatic and transient analysis are carried out in order to study the torque, torque ripple, efficiency and power factor.

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转子条形状和定子槽开度对断转子条三相鼠笼式异步电动机性能的影响

定子开槽宽度对气隙磁场有影响，该设计参数选择不当会导致气隙磁场畸变和空间谐波增大。这将对三相鼠笼感应电机(SCIM)的性能产生负面影响。改变转子棒的形状也会改变棒不同深度处的电阻，从而增加或减少电磁转矩。本文的目的是研究定子槽开度和转子条形状如何影响SCIMs在正常运行和转子条损坏时的性能。采用二维有限元法(FEM)对其进行建模，并对其进行静磁和瞬态分析，研究其转矩、转矩脉动、效率和功率因数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2019 Southern African Universities Power Engineering Conference/Robotics and Mechatronics/Pattern Recognition Association of South Africa (SAUPEC/RobMech/PRASA)

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