Comparative Study of Performance for Different Winding Connections of Dual-channel Switched Reluctance Machine Using Frozen Permeability

X. Cui, Jianbo Sun, C. Gu
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引用次数: 2

Abstract

Inductance characteristics play an important role in the output torque of the switched reluctance motor (SRM) whereas the windings connection form affects the mutual coupling between phases. According to the magnetic polarity models, dual-channel switched reluctance machine (DCSRM) with NNNSSSNNNSSS winding polarity is defined as DCSRMI, DCSRM with NSNSNSNSNSNS is defined as DCSRM2 and DCSRM with NNSSNNSSNNSS is defined as DCSRM3. Previous papers show that DCSRMs with different winding connections can offer different average torque, copper loss, iron loss and efficiency, but the work that different winding connections of DCSRMs running with channel fault is rarely carried out. This paper presents comparative studies of dynamic performance and magnetic characteristics of DCSRMs running with channel fault whereas only the winding connection type that differs. The frozen permeability method is adopted to compute static inductance and torque characteristics and to analyze the magnetic characteristics of the different winding connection models. The results show that the connection type of DCSRM3 can obviously enhance the average torque and minimize the torque ripple under the condition of channel fault. However the iron loss of DCSRM3 is highest among the three types under dual-channel excitation condition, which lowers the overall efficiency. By simulation analyses, a novel four-phase 16/12-poles fault-tolerant DCSRM called even-phase fault tolerance has been proposed. No matter in dual-channel excitation nor in single-channel excitation operation conditions, the performance of this even-phase DCSRM can be the best.
基于冷冻磁导率的双通道开关磁阻电机不同绕组连接性能比较研究
电感特性对开关磁阻电机的输出转矩起着重要的作用,而绕组的连接形式又影响着相间的相互耦合。根据磁极性模型,将绕组极性为NNNSSSNNNSSS的双通道开关磁阻电机(DCSRM)定义为DCSRMI,将带NSNSNSNSNSNS的DCSRM定义为DCSRM2,将带NNSSNNSSNNSS的DCSRM定义为DCSRM3。前人的研究表明,不同绕组连接方式的dcsrm可以提供不同的平均转矩、铜损、铁损和效率,但对不同绕组连接方式的dcsrm在通道故障情况下运行的研究很少。本文对比研究了有通道故障运行的直流直流电机的动态性能和磁特性,而绕组连接方式不同。采用冻结磁导率法计算了绕组的静态电感和转矩特性,分析了不同绕组连接方式的磁特性。结果表明,DCSRM3的连接方式可以明显提高通道故障情况下的平均转矩,减小转矩脉动。但在双通道激励条件下,DCSRM3的铁损最大,降低了整体效率。通过仿真分析,提出了一种新颖的四相16/12极容错DCSRM——偶相容错。无论在双通道励磁还是单通道励磁工况下,该双相DCSRM的性能都是最好的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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