摘要
异步起动铁氧体永磁辅助磁阻同步电动机在起动过程中定子电流大,铁氧体面临较大的退磁风险,严重影响了电机的正常运行。采用有限元瞬态场的分析方法分析了电枢磁场对永磁体退磁的影响,研究了不同导条及磁钢布置对电机不可逆退磁的作用规律。仿真结果显示,采用交轴转子导条及直轴永磁体的转子结构可大幅降低永磁体不可逆退磁风险;异步起动铁氧体电机和异步起动钕铁硼电机的对比分析表明,该电机结构具有较好的工程价值和应用前景。
The stator current of line start ferrite permanent magnet assisted synchronous reluctance motor is large during starting process,and the ferrite faces a great risk of demagnetization,which seriously affects the normal operation of the motor.The effect of armature magnetic field on the permanent magnet demagnetization was analyzed by finite element transient field method.The irreversible demagnetization of the motor was studied by different arrangement of cage bars and magnets.The results show that the irreversible demagnetization risk of permanent magnet can be reduced significantly by the q-axis arrangement of the starting cage bars and the d-axis arrangement of the magnet.
作者
王晓光
胡雄
李新华
WANG Xiaoguang;HU Xiong;LI Xinhua(Hubei University of Technology,Wuhan430068,China)
出处
《微特电机》
2018年第12期12-15,共4页
Small & Special Electrical Machines
基金
湖北省教育厅科学研究计划(Q20161403)
关键词
异步起动铁氧体永磁辅助式磁阻同步电机
转子结构
不可逆退磁
瞬态场仿真
line start ferrite permanent magnet assisted synchronous reluctance motor
rotor structure
irreversible demagnetization
transient field method
