异步起动永磁同步电动机起动过程中永磁体平均工作点的解析计算

针对采用时步有限元法研究异步起动永磁同步电动机起动过程中永磁体工作点的变化时存在计算时间长、不适合电机设计阶段的快速计算的问题,通过将异步起动永磁同步电动机的动态数学模型和磁路计算模型结合,建立了异步起动永磁同步电动机起动过程中永磁体平均工作点的解析计算模型。利用该解析计算模型计算了3台样机起动过程中永磁体平均工作点的变化,分别得到了电机起动过程中最大退磁磁场出现时的永磁体平均工作点和电机稳定运行时的永磁体平均工作点。通过与有限元法的计算结果作比较,验证了该解析计算模型的准确性,可为该类电机的快速设计提供参考。...

Full description

Saved in:
Bibliographic Details
Published in电机与控制学报 Vol. 21; no. 5; pp. 8 - 14
Main Author 唐旭 王秀和 徐定旺
Format Journal Article
LanguageChinese
Published 青岛理工大学自动化工程学院,山东青岛266520%山东大学电气工程学院,山东济南,250061 2017
山东大学电气工程学院,山东济南250061
Subjects
Online AccessGet full text
ISSN1007-449X
DOI10.15938/j.emc.2017.05.002

Cover

More Information
Summary:针对采用时步有限元法研究异步起动永磁同步电动机起动过程中永磁体工作点的变化时存在计算时间长、不适合电机设计阶段的快速计算的问题,通过将异步起动永磁同步电动机的动态数学模型和磁路计算模型结合,建立了异步起动永磁同步电动机起动过程中永磁体平均工作点的解析计算模型。利用该解析计算模型计算了3台样机起动过程中永磁体平均工作点的变化,分别得到了电机起动过程中最大退磁磁场出现时的永磁体平均工作点和电机稳定运行时的永磁体平均工作点。通过与有限元法的计算结果作比较,验证了该解析计算模型的准确性,可为该类电机的快速设计提供参考。
Bibliography:line-start permanent magnet synchronous motor; dynamic mathematical model; magnetic cir-cuit model; starting process; average operating point
23-1408/TM
When finite element method (FEM) is adopted to study the variation of magnets' operating point in line-start permanent magnet synchronous motor (LSPMSM) during the starting process, the com- putation is time consuming. Thus FEM is not suitable for the fast calculation at the motor design stage. To solve this problem ,the analytical model to calculate the variation of magnets' average operating point dur- ing the starting process of LSPMSM was established by combining the dynamic mathematical model and magnetic circuit model of LSPMSM. The variations of magnets' average operating point during the starting process of three prototype motors were calculated by the above analytical model. And magnets' average operating point when the severest demagnetization field during the starting process occurs as well as mag- nets' average operating point when the motor operate
ISSN:1007-449X
DOI:10.15938/j.emc.2017.05.002