新型结构永磁屏蔽电机三维磁场分析和电感计算

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摘要采用三维有限元方法对一台用于屏蔽泵系统的新型结构永磁屏蔽电机进行了分析与计算。电机无转子铁心,结构简单且无转子铁耗。由于绕组端部漏感较大,必须采用三维数值方法计算。首先对电机进行了三维磁场分析,接着采用三维瞬态有限元方法计算了屏蔽套的涡流损耗,然后运用能量摄动法计算出额定负载时电机各绕组不同转子位置角的自感和互感值,再通过坐标变换获得电机的交直轴电感值。最后对实际样机的电感参数进行测量,测量结果与计算结果的一致性验证了计算结果的正确性。

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	倪有源
	黄亚
	赵亮

关键词 ：永磁屏蔽电机, 三维有限元, 涡流损耗, 能量摄动法, 电感计算

Abstract：The calculation for a new structure of permanent magnet canned motor for a canned pump system is done using a three-dimensional(3D) finite element method(FEM). The motor has a simple structure without rotor iron core. For the leakage inductance of the end winding can not be ignored, a 3D numerical method is required. First, the 3D magnetic field of the motor is analyzed. Furthermore, the eddy current loss of the can is analyzed using a 3D transient FEM. Second, using an energy perturbation method, the self-inductance and mutual inductance of the windings are calculated in terms of different rotor positions under the rated load. In addition, the values of direct axis inductance L_d and quadrature axis inductance L_q are calculated by the coordinate transformation. Finally, the computed results of the inductance of the prototype are validated by the measured results.

Key words： Permanent magnet canned motor three dimensional finite element eddy current loss energy perturbation method inductance calculation

收稿日期: 2013-10-11 出版日期: 2015-03-23

PACS:

TM351

基金资助:安徽省自然科学基金和安徽省工业节电与电能质量控制协同创新中心开放课题（KFKT201408）基金资助

作者简介: 倪有源男,1976年生,博士,副教授,硕士生导师,研究方向为特种电机电磁场及电机控制。黄亚男,1990年生,硕士研究生,研究方向为永磁电机设计及其控制。

引用本文:

倪有源, 黄亚, 赵亮. 新型结构永磁屏蔽电机三维磁场分析和电感计算[J]. 电工技术学报, 2015, 30(1): 98-104. Ni Youyuan, Huang Ya, Zhao Liang. Analysis of 3-Dimensional Field and Calculation of Inductance for a New Structure of a Permanent Magnet Canned Motor. Transactions of China Electrotechnical Society, 2015, 30(1): 98-104.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2015/V30/I1/98

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