Investigation of Torque Ripple in an Induction Motor with Respect to Slot Number Combinations

IF 0.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Magnetics Pub Date : 2022-03-31 DOI:10.4283/jmag.2022.27.1.018
Yongha Choo, Changhwan Kim, Gyeonghwan Yun, Cheewoo Lee
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引用次数: 2

Abstract

In this study, the harmonic orders of varying magnetic flux density with respect to slot combinations are scru-tinized through a spatial and temporal fast Fourier transform. A three-phase four-pole induction motor is selected, and, as its base model, 36 and 28 slots are set up in the stator and rotor, respectively. Eleven models with different numbers of rotor slots were designed to study torque ripples with respect to slot combinations. The correlation between torque ripple and slot harmonics in a stator and rotor is described thoroughly by comparing the tangential and radial magnetic flux densities in the air gap, tangential force density, and harmonic orders in torque. Some models having deteriorated torque ripples have one or more slot harmonic orders in common in the stator and rotor. The other models exhibit the same commonalities, but a small torque ripple occurs because of the high harmonic orders. Models with 24 stator slots are investigated through the same pro-cedure to generalize the relationship between torque ripple and slot harmonics in 36 stator slots.
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基于槽数组合的异步电动机转矩脉动研究
在本研究中,通过空间和时间的快速傅里叶变换,对不同磁通密度相对于槽组合的谐波阶进行了仔细检查。选择一种三相四极感应电动机,定子和转子分别设置36和28个槽,作为其基本型号。设计了11个不同槽数的转子模型,研究了槽数组合对转矩波动的影响。通过比较气隙中切向和径向磁通密度、切向力密度和转矩谐波阶数,详细描述了定子和转子转矩脉动与槽次谐波之间的关系。一些转矩波动恶化的型号在定子和转子中有一个或多个共同的槽谐波阶。其他模型表现出相同的共性,但由于高次谐波,产生较小的转矩脉动。用同样的方法研究了具有24个定子槽的模型,推广了36个定子槽的转矩脉动与槽次谐波的关系。
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来源期刊
Journal of Magnetics
Journal of Magnetics MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED
CiteScore
1.00
自引率
20.00%
发文量
44
审稿时长
2.3 months
期刊介绍: The JOURNAL OF MAGNETICS provides a forum for the discussion of original papers covering the magnetic theory, magnetic materials and their properties, magnetic recording materials and technology, spin electronics, and measurements and applications. The journal covers research papers, review letters, and notes.
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