A new partitioned-primary flux-reversal hybrid-excited linear motor is proposed and investigated in this article, which features an asymmetrical double-sided primary structure. The novelty of this motor lies in the adoption of a partitioned-primary structure by moving the field excitation winding to an additional primary, thus it benefits from improved space utilization ratio since both armature and field windings can be separately mounted. First, the topology, feasible slot/pole combinations, and operating principles of the proposed machine are introduced. The magnetic flux density distributions in two air-gap regions are comparatively studied from the perspective of magnetic gearing effect. Then, global optimization of the proposed motor with different slot/pole combinations is performed to maximize both the output thrust force and flux-adjusting range based on 2-D finite-element analysis (FEA). In addition, the electromagnetic performance of the motors including flux-adjusting capability, thrust force, detent force, and force ripple with different slot/pole combinations are comparatively investigated. Finally, a 6-slot/7-pole prototype is manufactured and tested to verify the FEA and calculations. It is shown that the proposed motor, benefiting from a partitioned-primary topology, exhibits very good flux-adjusting capability and overloading capacity. Thus, it has good prospect in applications that require flexible speed control.

中文翻译：

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一种新型分区初级磁通反转混合励磁直线电机的分析

本文提出并研究了一种新的分区初级磁通反转混合励磁直线电机，它具有不对称的双面初级结构。该电机的新颖之处在于采用了分体式初级结构，将励磁绕组移到一个附加初级上，从而提高了空间利用率，因为电枢和励磁绕组可以分开安装。首先，介绍了所提出机器的拓扑结构、可行的槽/极组合和工作原理。从磁传动效应的角度比较研究了两个气隙区域的磁通密度分布。然后，基于二维有限元分析 (FEA)，对具有不同槽/极组合的建议电机进行全局优化，以最大化输出推力和磁通调节范围。此外，还比较了电机的电磁性能，包括磁通调节能力、推力、制动力和不同槽/极组合的力纹波。最后，制造并测试了一个 6 槽/7 极原型，以验证 FEA 和计算。结果表明，所提出的电机受益于分区初级拓扑结构，表现出非常好的磁通调节能力和过载能力。因此，它在需要灵活速度控制的应用中具有良好的前景。比较研究了电机的电磁性能，包括磁通调节能力、推力、制动力和不同槽/极组合的力纹波。最后，制造并测试了一个 6 槽/7 极原型，以验证 FEA 和计算。结果表明，所提出的电机受益于分区初级拓扑结构，表现出非常好的磁通调节能力和过载能力。因此，它在需要灵活调速的应用中具有很好的前景。比较研究了电机的电磁性能，包括磁通调节能力、推力、制动力和不同槽/极组合的力纹波。最后，制造并测试了一个 6 槽/7 极原型，以验证 FEA 和计算。结果表明，所提出的电机得益于分区初级拓扑结构，表现出非常好的磁通调节能力和过载能力。因此，它在需要灵活调速的应用中具有很好的前景。受益于分区主拓扑结构，表现出非常好的磁通调节能力和过载能力。因此，它在需要灵活速度控制的应用中具有良好的前景。受益于分区主拓扑结构，表现出非常好的磁通调节能力和过载能力。因此，它在需要灵活速度控制的应用中具有良好的前景。