The switched reluctance motor (SRM) has the high level of vibration and noise, whose application is greatly limited in many fields. In this article, a novel stator for a SRM is designed to reduce torque ripple and is suitable for one‐directional or low‐speed reverse rotation. On the one hand, a shoe is added to the stator pole side in the rotating forward direction from the completely unaligned to the aligned position. On the other hand, a slot is set on the top of stator tooth. First, causes of vibration and torque ripple are analyzed. Second, it is indicated by the equivalent magnetic circuit (EMC) method that the air gap permeability of the model with the single‐sided pole shoe is larger than that of the conventional model in the nonoverlapping region between the stator and rotor. The influences of the angle and height of shoe on the air gap magnetic density, radial force, and torque ripple are analyzed. Third, the results from EMC method show that the radial force can be reduced by opening a slot at the top of stator pole arc. The width and depth of slot which has effect on the radial force and torque ripple are analyzed. Finally, finite element analysis results show that the decreases of 34.52% for the radial force wave peak and 43.39% for the torque ripple are achieved at the cost of a decrease of 8.54% for the average torque of the single‐sided pole and the slot model of the stator pole compared with the conventional model. Some experiments for the two prototypes verify that the torque ripple and radial force can be reduced by adopting the new model.

中文翻译：

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单面极靴和槽对降低开关磁阻电机转矩脉动的影响

开关磁阻电机（SRM）具有较高的振动和噪声水平，其在许多领域的应用受到很大限制。在本文中，SRM 的新型定子旨在减少转矩脉动，适用于单向或低速反向旋转。一方面，在从完全未对齐到对齐位置的正向旋转方向上，在定子极侧增加了一个滑靴。另一方面，定子齿的顶部开有槽。首先，分析振动和转矩脉动的原因。其次，等效磁路（EMC）方法表明，单侧极靴模型的气隙磁导率在定转子非重叠区域大于常规模型。分析了鞋的角度和高度对气隙磁密度、径向力和转矩脉动的影响。第三，EMC方法的结果表明，在定子极弧顶部开槽可以减小径向力。分析了槽的宽度和深度对径向力和转矩脉动的影响。最后，有限元分析结果表明，径向力波峰值降低34.52%，转矩脉动降低43.39%，是以单边极和槽平均转矩降低8.54%为代价的定子极模型与传统模型相比。对两个样机进行的一些实验验证了采用新模型可以减小转矩脉动和径向力。EMC方法的结果表明，在定子极弧顶部开槽可以减小径向力。分析了槽的宽度和深度对径向力和转矩脉动的影响。最后，有限元分析结果表明，径向力波峰值降低34.52%，转矩脉动降低43.39%，是以单边杆和槽平均转矩降低8.54%为代价的定子极模型与传统模型相比。对这两个样机进行的一些实验验证了采用新模型可以减小转矩脉动和径向力。EMC方法的结果表明，在定子极弧顶部开槽可以减小径向力。分析了槽的宽度和深度对径向力和转矩脉动的影响。最后，有限元分析结果表明，径向力波峰值降低34.52%，转矩脉动降低43.39%，是以单边极和槽平均转矩降低8.54%为代价的定子极模型与传统模型相比。对这两个样机进行的一些实验验证了采用新模型可以减小转矩脉动和径向力。分析了槽的宽度和深度对径向力和转矩脉动的影响。最后，有限元分析结果表明，径向力波峰值降低34.52%，转矩脉动降低43.39%，是以单边极和槽平均转矩降低8.54%为代价的定子极模型与传统模型相比。对这两个样机进行的一些实验验证了采用新模型可以减小转矩脉动和径向力。分析了槽的宽度和深度对径向力和转矩脉动的影响。最后，有限元分析结果表明，径向力波峰值降低34.52%，转矩脉动降低43.39%，是以单边极和槽平均转矩降低8.54%为代价的定子极模型与传统模型相比。对这两个样机进行的一些实验验证了采用新模型可以减小转矩脉动和径向力。