【摘要】 无刷双馈电机的磁路中同时存在两种不同极对数且不同转速的磁场。由于磁场分布的不对称性及时变性,传统的分析方法很难考虑饱和对电机带来的影响。本文建立了无刷双馈电机的有限元模型,并利用瞬态分析法分析了其相关运行性能,研究了功率在两套绕组中的分配规律。由于有限元模型考虑了磁场的饱和效应,故其计算结果相比传统方法更接近实测值,相关实验证实了该模型的有效性。更多还原

【Abstract】 There are two kinds of magnetic fields differing in pole number and rotational speed in the iron circuit of brushless doubly fed machine(BDFM).Owing to asymmetry and time-varying volatility of field distribution,it is difficult to take into account the influence of saturation on BDFM by use of traditional analytic method.In this paper,one finite-element model of BDFM was built,and some related performances were analyzed using transient solver.The paper also discussed the rule of power allocation between the two windings in the stator for the BDFM.As the saturation effect of the field was taken into account,its calculation results are closer to the test results than traditional analytic method’s.The model is verified using measurements made on a test machine.更多还原