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签到天数: 53 天 连续签到: 7 天 [LV.5]常住居民I
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发表于 2023-6-2 20:08
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来自: 中国江西宜春
本帖最后由 zengxiaodong 于 2023-6-2 20:12 编辑
Abstract:We have experienced the unprecedented copper price rises in the recent years. With increased use in the automotive industry, it will become even more serious issue, possibly slowing down the wider application of the electric drives in the new vehicles. More efficient way to use the copper would bring substantial benefits to other industries, too - every high volume inductive device application included. In the ideal world inductive devices would have 100% active material in the winding, but in the real world it is much less. The insulation layer is one cause and the wire shape fill factor the other. Round shapes can only be wound with limited efficiency. Other cross sectional shapes (hexagonal, rectangular) can bring improvement, but have limited applications due to high cost and unsuitability for any but heavy gauge wires. This paper describes and discusses the available and/or possible technologies of post-forming the round wire windings, in order to achieve the maximum fill factor. The wound circular cross sections need to be transformed into hexagonal array (honeycomb) while the insulation remains fully functional. This will results in substantial improvement of the fill factor, opening up the wide range of the possibilities from higher power to weight ratio to cost saving, even substitution of copper with aluminum in some applications, enabling dramatic improvements in the cost reduction, vehicle dynamics and overall energy efficiency. The technologies presented and discussed in this paper are: direct mechanical compression; injection moulding, in two sub-technologies (hydro forming and explosion-forming). Some of the above technologies are ready for industrial applications, some would need further development to reach that stage. Currently one of the technologies shows to have the highest potential to be implemented in the high volume production, because of it's more development and compatibility manufacturing resources, making relatively straightforward. That...
近年来,我们经历了前所未有的铜价上涨。 随着汽车行业使用的增加,这将成为更严重的问题,可能会减缓电驱动在新车中的更广泛应用。 更有效地使用铜的方法也将为其他行业带来巨大利益 - 包括每个大容量电感设备应用。 在理想世界中,电感设备的绕组中将有 100% 的有效材料,但在现实世界中要少得多。 绝缘层是一个原因,导线形状填充因子是另一个原因。 圆形只能以有限的效率缠绕。 其他横截面形状(六边形、矩形)可以带来改进,但由于成本高且不适合除大规格导线外的任何其他导线,因此应用有限。 本文描述和讨论了圆形线绕组后成型的可用和/或可能的技术,以实现最大的填充因子(槽满率)。 缠绕的圆形横截面需要转变为六角形阵列(蜂窝),同时绝缘仍保持完整功能。 这将导致填充系数(槽满率)的显着提高,开辟了从更高的功率重量比到节省成本的广泛可能性,甚至在某些应用中用铝替代铜,从而显著改善车辆动力学、整体能源效率和降低成本。 本文介绍和讨论的技术是:直接机械压缩; 注塑成型,采用两种子技术(液压成型和爆炸成型)。 上述技术中,有些已经准备好用于工业应用,有些还需要进一步开发才能达到那个阶段。 目前,其中一项技术显示出在大批量生产中实施的潜力最大,因为它具有更多的开发和兼容性制造资源,制作相对简单。 那...
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