电工技术学报  2019, Vol. 34 Issue (15): 3112-3123    DOI: 10.19595/j.cnki.1000-6753.tces.180763
电机与电器 |
基于磁性槽楔修正模型的感应电动机气隙磁场的分布磁路法
刘治鑫, 王东, 余中军, 孟繁庆, 陈俊全
海军工程大学舰船综合电力技术国防科技重点实验室 武汉 430033
Distributed Magnetic Circuit Method for Calculating Air-Gap Magnetic Field of Induction Motor Based on Modified Model Considering the Effect of Magnetic Slot Wedges
Liu Zhixin, Wang Dong, Yu Zhongjun, MengFanqing, Chen Junquan
National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan 430033 China
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摘要 为能够兼顾磁性槽楔感应电动机气隙磁场的计算速度与计算精度,该文在考虑磁路饱和效应的分布磁路法基础上,进一步通过有限元法考虑了磁性槽楔作用下的齿槽效应,即基于电机齿槽结构简化有限元模型,计算出计及磁性槽楔作用的卡氏系数与气隙比磁导。通过计及磁性槽楔作用的卡氏系数对感应电动机的分布磁路模型进行修正,并基于该修正模型计算出考虑磁路饱和效应的磁性槽楔感应电动机气隙磁动势;通过计及磁性槽楔作用的气隙比磁导,可计算出磁性槽楔感应电动机的气隙磁导;基于计算出的气隙磁动势与气隙磁导,可得到磁性槽楔感应电动机的气隙磁通密度。该文所提方法与有限元法的计算结果吻合良好,证明了该方法的合理性与准确性,并进一步基于该方法研究了不同磁性槽楔磁导率下齿谐波磁通密度的变化规律。
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刘治鑫
王东
余中军
孟繁庆
陈俊全
关键词 感应电动机磁性槽楔气隙磁通密度分布磁路法有限元法气隙比磁导    
Abstract:In order to balance calculation speed and accuracy of air-gap magnetic field of induction motor with magnetic slot wedges, slot effect influenced by magnetic slot wedges was considered by finite element method in this paper, that was, Cartesian coefficient and air-gap relative permeance considering the effect of magnetic slot wedges was calculated based on the simplified finite element model of motor’s tooth-slot structure, while magnetic saturation effect was considered by distributed magnetic circuit method. The distributed magnetic circuit model of induction motor was modified by Cartesian coefficient obtained from finite element method, and then the air-gap MMF of motor considering magnetic saturation effect was calculated based on the modified model. The air-gap relative permeance obtained from finite element method can be used to calculate the air-gap permeance of motor. Based on the calculated air-gap MMF and air-gap permeance, the air-gap magnetic density of motor can be obtained. The calculation results of the proposed method are in good agreement with finite element method, proving the rationality and accuracy of the proposed method. Based on the proposed method, the law about the change of tooth harmonics under the condition of different slot-wedge permeability was further studied.
Key wordsInduction motor    magnetic slot wedges    air-gap magnetic density    distributed magnetic circuit method    finite element method    air-gap relative permeance   
收稿日期: 2018-05-03      出版日期: 2019-08-13
PACS: TM343  
基金资助:国家自然科学基金资助项目(51690181,51825703)
通讯作者: 王东,男,1978年生,教授,博士生导师,研究方向为多相电机及其系统。E-mail:wangdongl@vip.sina.com   
作者简介: 刘治鑫,男,1990年生,硕士研究生,研究方向为感应电机性能分析及优化设计。E-mail:1165015521@qq.com
引用本文:   
刘治鑫, 王东, 余中军, 孟繁庆, 陈俊全. 基于磁性槽楔修正模型的感应电动机气隙磁场的分布磁路法[J]. 电工技术学报, 2019, 34(15): 3112-3123. Liu Zhixin, Wang Dong, Yu Zhongjun, MengFanqing, Chen Junquan. Distributed Magnetic Circuit Method for Calculating Air-Gap Magnetic Field of Induction Motor Based on Modified Model Considering the Effect of Magnetic Slot Wedges. Transactions of China Electrotechnical Society, 2019, 34(15): 3112-3123.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.180763          https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I15/3112