二维场计及横向漏电流影响的感应电机损耗与转矩分析

doi:10.19595/j.cnki.1000-6753.tces.201086

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摘要

通常中小型电机多应用感应电机,通过转子斜槽的结构达到抑制寄生转矩、电磁振动和噪声等目的,同时斜槽结构会增加转子导条间的横向电流,影响感应电机的起动性能以及电机效率。因此,该文主要研究横向电流对单斜槽感应电机性能的影响,通过总结单斜槽感应电机中横向电流在转子表面的分布规律,提出一种能计及横向电流的2D多截面有限元模型,相比已有计算横向漏电流时的3D模型,有效减少了仿真时间。通过在转子内建立过渡层的方式,利用多截面有限元的方法等效斜槽感应电机,在2D有限元仿真中考虑横向漏电流,利用此模型预测三相感应电机中横向漏电流对电机性能的影响,通过对Y802-2感应电机内横向漏电流损耗进行仿真,并与三维有限元的损耗值进行对比,验证模型的可行性与有效性,同时利用此模型分析横向电阻值对电机的起动转矩特性的影响。

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	谢颖
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关键词 ：感应电机, 斜槽, 横向电流, 损耗, 转矩

Abstract：

In general, small and medium-sized induction motors (IM) are mostly used for induction motors. The skewed rotor structure can suppress parasitic torque, electromagnetic vibration and noise, but it will increase the inter-bar current between the rotor bars, affecting the starting characteristics and efficiency of the IM. Hence, the influence of inter-bar current on the performance of skewed rotor IM was studied in this paper. By summarizing the distribution of inter-bar current on the rotor in the IM with skewed rotor, a two-dimensional multi-section finite element model that can take into account the inter-bar current was proposed. The model effectively reduces the simulation time compared with the three-dimensional finite element model considering inter-bar current. Moreover, this model takes into account the influence of the inter-bar current on the skewed rotor motor in the two-dimensional finite element through establishing the transition layer in the rotor, which can be used to predict the influence of the inter-bar current on the motor performance. The inter-bar current loss in the Y802-2 IM was simulated and compared with the loss value of the three-dimensional finite element simulation. The feasibility and effectiveness of the model were verified, and this model was used to analyze the effect of different inter-bar current resistance values on the starting torque characteristics of the IM.

Key words： Induction motor skewed rotor inter-bar current loss torque

收稿日期: 2020-08-25

PACS:

TM343

基金资助:

国家自然科学基金资助项目（51977052）。

通讯作者: 谢颖,女,1974年生,教授,博士生导师,研究方向为电机内电磁场、温度场、振动噪声计算及感应电机故障诊断及检测。E-mail: xieying_1975@163.com

作者简介: 毛攀,男,1993年生,硕士研究生,研究方向为电机内电磁场与损耗分析。E-mail: 15736707637@163.com

引用本文:

谢颖, 毛攀, 胡圣明, 马泽新, 魏静微. 二维场计及横向漏电流影响的感应电机损耗与转矩分析[J]. 电工技术学报, 2022, 37(4): 849-860. Xie Ying, Mao Pan, Hu Shengming, Ma Zexin, Wei Jingwei. Analysison Lossand Torque of Induction Motor Considering Inter-Bar Current in Two-Dimensional Field. Transactions of China Electrotechnical Society, 2022, 37(4): 849-860.

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