|本期目录/Table of Contents|

[1]胡笳,谷君,奚林根,等.自起动永磁同步电机转子铜耗分析的时步有限元优化离散策略 [J].电机与控制学报,2017,21(05):81-88.[doi:10.15938/j.emc.2017.05.011]
 HU Jia,GU Jun,XI Lin-gen,et al.Optimization discrete strategy of time-stepping finite element for loss analysis in rotor bar of line-Start permanent magnet synchronous motor [J].,2017,21(05):81-88.[doi:10.15938/j.emc.2017.05.011]
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自起动永磁同步电机转子铜耗分析的时步有限元优化离散策略
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
21
期数:
2017年05
页码:
81-88
栏目:
出版日期:
2018-04-20

文章信息/Info

Title:
Optimization discrete strategy of time-stepping finite element for loss analysis in rotor bar of line-Start permanent magnet synchronous motor
作者:
?胡笳1 谷君2 奚林根1 吕克启1
?( 1. 中国电力国际有限公司,北京100080; 2. 国家电网北京市电力科学研究院,北京100075)
Author(s):
?HU Jia1 GU Jun2 XI Lin-gen1 L Ke-qi1
?( 1. China Power International Holding Ltd. ,Beijing 100080,China; 2. Beijing Electric Power Research Institute,Beijing 100075,China)
关键词:
时步有限元 同步电动机 损耗分析 空间离散 谐波
Keywords:
time-stepping finite element method permanent magnet synchronous motors loss analysisspatial discretization harmonic
分类号:
TM 351
DOI:
10.15938/j.emc.2017.05.011
文献标志码:
A
摘要:
利用时步有限元方法对永磁同步电机进行转子铜耗分析计算时,由于空间中高次谐波磁场的作用,使得导条中的电流与损耗在集肤效应的影响下呈非均匀分布,于是有限元模性的空间离散方案将直接对计算精度产生影响。首先通过理论推导得出导条电流密度的解析表达式; 在此基础
上,通过建立不同形式的目标函数,研究等间距与不等间距条件下离散密度对于损耗计算精度的影响,及其所对应的最优离散方案; 最后,针对转子实际槽形结构,在考虑交界面处强制引入节点的约束条件下,提出了采用分区域循环引用最优离散点的方法,求解全局优化离散策略。通过与时步有限元计算结果进行对比,验证了方法的合理性。
Abstract:
?When calculating copper loss in the rotor bar of permanent synchronous motor ( PMSM) using time-stepping finite element method ( T-S FEM) , there are lots of high frequencies harmonic magnetic fields in the space, the current and loss density distributes non-uniformity because of skin effect, so the method of spatial discretization affects the computational accuracy directly. The current density expression was presented by theoretical deduction firstly, then the object function in different forms was established to research the computational accuracy under the condition of uniform and ununiform discretization,and the optimal discretization strategy was obtained. Finally,considering the constraint condition of the forced node in the interface of rotor bar, the method of optimal discretization calculating loop quoted in different regions was proposed to solve the global optimization problem. The rationality of method was validated by comparing with calculation result of T-S FEM.

参考文献/References:

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相似文献/References:

[1]朱希荣,周渊深,符晓.同步电动机三自由度内模动态解耦控制[J].电机与控制学报,2010,(01):61.
 ZHU Xi-rong,ZHOU Yuan-shen,FU Xiao.Three-degree-freedom internal model dynamic decoupling control of synchronous motor[J].,2010,(05):61.
[2]董传友,李勇,丁树业,等. 开关磁阻电机铁心损耗分析[J].电机与控制学报,2015,19(07):58.[doi:10. 15938/j. emc.2015.07.009]
 DONG Chuan-you,LI Yong,DING Shu-ye,et al. Iron loss analysis of switched reluctance motor[J].,2015,19(05):58.[doi:10. 15938/j. emc.2015.07.009]

备注/Memo

备注/Memo:
收稿日期: 2015 - 10 - 21
作者简介: 胡笳( 1982—) ,男,博士,研究方向为电机电磁场数值计算等;
谷君( 1982—) ,女,博士,研究方向为电力系统自动化技术及数值计算等;
奚林根( 1968—) ,男,学士,研究方向为电力系统自动化;
吕克启( 1970—) ,男,学士,研究方向为电机与电器。
更新日期/Last Update: 2017-08-24