混合式步进电动机的谐波电磁转矩分析

Analysis of Harmonic Electromagnetic Torques of Hybrid Stepping Motors

研究了五相混合式步进电动机的不对称性 ,分析了不对称性与 3次谐波电流对电动机谐波电磁转矩的影响 ,提出了不对称性可在电动机的反电动势中体现 ,且导致电动机产生较大的2次谐波电磁转矩分量 ,对转子齿数较多的电动机 ,为减小相位误差 ,特别要注意提高机械加工精度 ,分析研究结果为采取相应措施抑制电动机的

The characteristics of back EMF and harmonic electromagnetic torques are investigated for an unbalanced 5 phase hybrid stepping motor Based on the analysis of those,it is proposed that the amplitude of the second harmonic electromagnetic torque is the largest one because of the unbalanced back EMF and the third harmonic phase current Experimental results agree with the analytical ones