自起动永磁电机起动冲击电流和转矩的场路耦合分析  

Field-Circuit Coupled Analysis for Starting Inrushing Current and Torque of Line-Start Permanent Magnet Motor

作　　者：梁京辉[1] 乔鸣忠[1] 徐凤军[2] 李耕[1] 

机构地区：[1]海军工程大学电气与信息工程学院,湖北武汉430033 [2]海军702厂,上海200434

出　　处：《电机与控制应用》2011年第10期26-30,共5页Electric machines & control application

摘　　要：建立了自起动永磁同步电机的场-路-运动耦合模型,给出控制电路与电磁场方程耦合的时步有限元分析方法,采用运动气隙边界法解决转子运动问题,与机械运动方程相结合,可对电机的瞬态过程进行准确计算。应用上述方法对一台15 kW内置径向W型自起动永磁同步电机进行计算,详细分析了不同通电时刻、转子位置、铁磁材料,以及永磁体磁场情况下的起动冲击电流和转矩,全面详尽地阐释了影响冲击电流和转矩的各个因素,为优化电机设计和起动过程打下基础。The field-circuit-motion coupled model of line-start permanent magnet（PM） motors was established,and the finite element analysis involving control circuit and electromagnetic field was provided,and a moving air-gap boundary method combining motor motion equation was adopted to simulate the transient process of motor exactly.The performance of a 15 kW embedded-W type of line-start PM motor was analyzed using the proposed model.The inrushing current and torque was analyzed with different conditions of electrifying moment、initial rotor position、ferromagnetic non-linearity and PM field,illustrating the factors that affect inrushing current and torque.Conclusions could be considered as foundation for optimizing motor design and starting progress.

关 键 词：自起动永磁电机 场路耦合 冲击电流 冲击转矩 

分 类 号：TM351[电气工程—电机]