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.
出处
《电机与控制应用》
北大核心
2011年第10期26-30,共5页
Electric machines & control application
关键词
自起动永磁电机
场路耦合
冲击电流
冲击转矩
line-start permanent magnet motor
field-circuit-motion couple
inrushing current
impact torque
