The brushless dual-electrical-port dual-mechanical-port (BLDD) machine is a newly developed machine type which can replace conventional power split system based on planetary gear. BLDD machine always contains one stator and two coaxial rotors, and two sets of windings are required to control two rotors. In this article, a novel integrated winding configuration is proposed to replace two original windings with different pole number, i.e., the integrated winding should have the ability to produce two pole number, independent-control magnetomotive forces (MMFs). By carefully designing coil displacement and terminal configuration, two current components with different phases are skillfully injected to the integrated winding, which produces MMFs with different pole-pairs. Compared with original winding configuration, the proposed integrated winding has two main advantages. First, higher current can be injected under the same copper loss, which improves the torque density of BLDD machine indirectly; second, the configuration of the integrated winding is the same as one set of overlapping winding, which contains only one coil configuration and simplifies the manufacture process. In this article, the structure and operation principle of the integrated winding are detailedly introduced, and the electromagnetic performance of BLDD machine equipped with integrated winding is investigated by finite element analysis (FEA), finally a prototype is also manufactured and tested to verify the analysis.

中文翻译：

---

一种具有集成绕组结构的无刷双电口双机械口电机


无刷双电口双机械口（BLDD）电机是一种新开发的电机类型，可以取代传统的基于行星齿轮的动力分配系统。 BLDD 电机通常包含一个定子和两个同轴转子，并且需要两组绕组来控制两个转子。本文提出了一种新颖的集成绕组配置来替代两个不同极数的原始绕组，即集成绕组应具有产生两个极数、独立控制磁动势（MMF）的能力。通过精心设计线圈位移和端子配置，两个不同相位的电流分量巧妙地注入集成绕组，从而产生具有不同极对的MMF。与原始绕组配置相比，所提出的集成绕组有两个主要优点。首先，在相同的铜损下可以注入更高的电流，间接提高了BLDD电机的扭矩密度；其次，一体式绕组的结构与一组重叠绕组相同，仅包含一个线圈结构，简化了制造工艺。本文详细介绍了集成绕组的结构和工作原理，并通过有限元分析（FEA）研究了配备集成绕组的BLDD电机的电磁性能，最后制作了样机并进行了测试以验证分析。 。