4摘要：混合磁极式的混合励磁永磁同步发电机具有结构简单以及气隙磁场调节方便的优点。分析了该类电机的气隙磁场调节原理。基于电磁场有限元方法，介绍了齿磁通法计算电枢绕组空载电压波形的基本原理。应用该方法对一台混合磁极式的混合励磁永磁同步发电机的空载电磁场结果进行了后处理，得到了电枢绕组空载电压波形以及空载特性曲线。计算结果与实验结果比较验证了计算方法的正确性以及表明了该电机具有较好的气隙磁场调节能力。
关键词：混合磁极；永磁同步发电机；有限元法；齿磁通法
Abstract: Hybrid excitation permanent magnet synchronous generators with hybrid poles possess the advantages of simple configuration and convenient adjustment of air gap magnetic field. The adjustment principle of the air gap magnetic field was analyzed, and the tooth flux method for calculating noload voltage waveform of the armature windings was introduced based on finite element method. The noload magnetic field results of this electric machine were processed by means of this method, and the noload voltage waveform of the armature windings and the noload characteristics were obtained. The comparison between the calculated results and the experimental results verified the validity of the method, and thus showed the excellent adjustment ability of this electric machine.
Key words: hybrid poles；permanent magnet synchronous generator；finite element method；tooth flux method