High Efficiency Traction Motor with Enhanced Mechanical Stability

燃油经济性是一个关键指标，推动制造商之间的激烈竞争，以设计出更省油、更经济的汽车，随着时间的推移，制造更经济。该项目旨在满足高能效要求和“百万英里”汽车市场对提高电力动力系统效率和寿命的需求。该项目的愿景是开发一种具有增强机械稳定性的高效牵引电机。随着机械稳定性的提高，噪音、振动和粗糙度(NVH)更低，产品可靠性和寿命更好--所有这些都为客户增值。使用高压架构，可以降低电机电流需求，从而降低损耗。电力驱动技术公司的最终目标是将永磁牵引电机和碳化硅逆变器集成到一个紧凑的单元中。这种集成的电动驱动适合于在中高端电动汽车、商用车或HGV市场部署。这个为期6个月的研发项目完全集中在牵引电机的开发上。该项目的目标是设计和制造一个牵引电机原型，并证明使用电力驱动技术公司的专有技术可以显著降低轴承或轴产生的噪音和振动。=我们原定于1月份返回英国，但由于封锁和旅行限制，我们不得不延长逗留时间。我们的项目里程碑没有受到影响，因为第一季度的工作包主要是设计和模拟，可以远程进行。我们最近从谢菲尔德的供应商Arnold Magnetics得知，由于新冠肺炎的限制，磁铁的交货期要长得多。Arnold Magnetics从中国同行那里采购磁铁，目前交货期长达14周。这么长的交货期将使我们的进度推迟9周，并可能影响我们项目的结果。然后我们联系了几家中国磁铁制造商，找到了一对夫妇，他们可以在短短4周内供应所需的磁铁。其他材料的交货期也要长得多。例如，如果从英国供应商那里购买，定子/转子铁心的制造周期约为6周。我们知道的一家中国制造商可以在短短两周内完成核心的周转。英国供应商从美国进口漆包线，交货期在4至8周之间。另一方面，中国制造商可以立即发货，因为它们是库存项目。对于加工部件，我们将使用拥有中国业务的英国分包商来缩短交货期。鉴于上述部件的交货期出乎意料地长，我们希望获得使用中国分包商的许可，并直接从中国供应商那里采购材料。这将有助于显著缩短交货期。出于后勤原因，我们将在中国的临时车间制造发动机、组装和调试测试台，然后将它们运回英国。我们希望您能理解，使用外国分包商和供应商是这个项目成功的关键。谢谢你的考虑。

Fuel economy is a critical metric driving intense competition among the manufacturers to engineer vehicles that are more fuel efficient and more economical to manufacture over time. This project addresses the need for increased efficiency and longevity of electric powertrains in response to high energy efficiency requirement and the 'million-mile' automotive market. The vision of this project is to develop a high efficiency traction motor having enhanced mechanical stability. With enhanced mechanical stability comes lower noise, vibration and harshness (NVH), better product reliability and longevity -- all are value-add to the customers. Using a high voltage architecture, the motor current requirement can be lowered and hence losses can be reduced.Electric Drive Technologies' ultimate goal is to integrate a permanent magnet traction motor and a silicon carbide-based inverter into a single compact unit. Such an integrated electric drive is suitable for deployment in medium/high-end EVs, commercial vehicles or HGVs markets. This 6-month R&D project focusses exclusively on the development of a traction motor. The objectives of this project are to design and build a prototype traction motor and demonstrate that noise and vibrations due to the bearings or shaft can be significantly reduced with Electric Drive Technologies' proprietary technology.=========================Request for using foreign subcontractors and suppliersOne of my colleagues and I have been in China since mid-November 2020, participating in various electric powertrains and EV events to interview Tier-1 suppliers and automotive OEMs. We were due to return to the UK in January but had to extend our stay due to the lockdown and travel restrictions. Our project milestones have not been impacted as the work packages in Q1 were predominantly designs and simulations which can be undertaken remotely. We were informed recently by Arnold Magnetics, a supplier based in Sheffield, that the magnets have a much longer lead time due to Covid-19 restrictions. Arnold Magnetics source their magnets from their Chinese counterpart and the lead time is now up to 14 weeks. Such a long lead time would delay our schedule by 9 weeks and could impact the outcome of our project. We then approached several Chinese magnet manufacturers and found a couple that can supply the required magnets in just 4 weeks. Lead time for other materials is significantly longer as well. For example, the lead time for manufacturing stator/rotor cores is around 6 weeks if purchased from the UK suppliers. A Chinese manufacturer we know can turnaround the cores in just 2 weeks. The UK suppliers import enamelled copper wires from the US where lead time is between 4 to 8 weeks. The Chinese manufacturers, on the other hand, can dispatch the copper wires immediately as they are ex-stock items. For machining components we will be using a UK-based subcontractor that has China operations to reduce lead time.In view of the unanticipated long lead times for the aforementioned parts, we would like to request permission to use Chinese subcontractors and purchasing materials directly from Chinese suppliers. This will help cut down the lead times significantly. For logistic reasons we will build the motor, assemble and commission the test rig in our temporary workshop in China before shipping them back to the UK. We hope you understand that using foreign subcontractors and suppliers is critical to the success of this project. Thank you for your consideration.