混合励磁永磁记忆电机弱磁性能分析  

Analysis of Flux-Weakening Properties of Hybrid Excitation Permanent Magnet Memory Motor

作　　者：姜春辉[1] 田玉冬[1] 

机构地区：[1]上海电机学院,上海201306

出　　处：《微特电机》2016年第11期30-33,共4页Small & Special Electrical Machines

摘　　要：设计了一种混合励磁永磁记忆电机,采用Ansoft Maxwell 2D仿真软件建立了仿真模型,采用有限元的分析方法,研究了电机的弱磁性能。给出了去磁时的回复线方程和充磁时的局部磁滞回线方程。对电机施加不同的直轴去磁电流,分析电机的磁力线分布和永磁体的磁密矢量分布,给出了电机在不同磁化电流下的相磁链曲线。仿真结果表明,该记忆电机具有良好的弱磁性能,同时在弱磁运行时能够保证电机始终具有一定的气隙磁密。A hybrid permanent magnet （PM） variable flux memory motor （VFMM） was designed. The simulation model was established in Ansoft Maxwell 2D software. The flux weakening of the motor was researched by using the finite element analysis method. Recoil line equation under demagnetization and local hysteresis curve equation under remagnetiza- tion are given. Different direct axis current is applied to the motor. The motor＇s flux_lines and the permanent magnets＂ flux density vector was analysed. The motor＇s fluxlinkage of winding a under different magnetizing current was given. The simu- lation results show that the motor has good flux weakening ability. And the motor has a certain air gap magnetic density in weak magnetic operation.

关 键 词：混合励磁 可变磁通 记忆电机 弱磁 

分 类 号：TM351[电气工程—电机]