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标题：U型无铁心永磁同步直线电机电磁耦合分析 |
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作者：苗万涛，唐火红，孙鹏，等 |
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| 2015年第8期 访问次数：242次 |
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摘要： U型无铁心永磁同步直线电机气隙磁场是永磁体励磁磁场和线圈绕组电枢电流励磁磁场在气隙区域的耦合，由于励磁方式的不同，使得理论分析比较困难。本文基于等效磁化电流和电枢相电流的傅里叶级数展开相结合的理论分析方法，将励磁永磁体和电枢相电流产生的磁场均等效为正弦电流激励磁场，从而让二者具有一致的表达形式，求解分析此类电机的气隙耦合磁场。最后，将理论分析结果与二维有限元分析方法和试验样机实验分析结果进行比较分析，验证了理论分析结果的有效性和可靠性。
关键词：永磁同步直线电机；电磁耦合；等效电流法；气隙耦合磁场；有限元
Abstract: The airgap magnetic field of Ushaped ironless permanent magnet synchronous linear motor is coupled with the magnetic field by the excitation of permanent magnet and armature current of coil windings. Due to the different excitation way, theoretical analysis of the airgap magnetic field is more difficult. This paper proposed a new theoretical analysis way based on combining the equivalent magnetizing current and armature phase current Fourier series expansion which made them into a unified sinusoidal excitation field to solve the airgap coupling magnetic field. Finally, the result of theoretical analysis, finite element analysis methods and test prototype experiment were compared to verify the validity of the analytical results.
Key words: PMLSM; electromagnetic coupling; equivalent current method; airgap coupling magnetic field; FEM
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