High Efficiency Traction Motor with Enhanced Mechanical Stability

具有增强机械稳定性的高效牵引电机

• 批准号: 84422
• 金额: $ 12.74万
• 依托单位: ELECTRIC DRIVE TECHNOLOGIES LTD
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=84422
• 关键词: Efficiency; Traction; Motor; Enhanced; Mechanical

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.

燃油经济性是推动制造商之间激烈竞争的一个关键指标，以设计出更省油、制造更经济的车辆。该项目满足了提高电动动力系统效率和使用寿命的需求，以满足高能效要求和“百万英里”汽车市场。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。机械稳定性的增强带来了更低的噪音、振动和声振粗糙度 (NVH)、更好的产品可靠性和更长的使用寿命——所有这些都为客户带来了增值。使用高压架构，可以降低电机电流要求，从而减少损耗。Electric Drive Technologies 的最终目标是将永磁牵引电机和碳化硅逆变器集成到单个紧凑单元中。这种集成电驱动适合部署在中高端电动汽车、商用车或重型汽车市场。这个为期 6 个月的研发项目专注于牵引电机的开发。该项目的目标是设计和建造原型牵引电机，并证明通过 Electric Drive Technologies 的专有技术可以显着降低轴承或轴引起的噪音和振动。==============================要求使用外国分包商和供应商 我和我的一位同事自 2020 年 11 月中旬以来一直在中国，参加了各种电动 动力总成和电动汽车活动采访一级供应商和汽车原始设备制造商。我们原定于一月份返回英国，但由于封锁和旅行限制，不得不延长逗留时间。我们的项目里程碑并未受到影响，因为第一季度的工作包主要是可以远程进行的设计和模拟。最近，位于谢菲尔德的供应商 Arnold Magnetics 告知我们，由于 Covid-19 的限制，磁铁的交货时间要长得多。 Arnold Magnetics 从中国同行处采购磁铁，目前交货时间长达 14 周。如此长的交付时间将使我们的日程推迟 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，找到了两家可以在短短 4 周内供应所需磁铁的制造商。其他材料的交货时间也明显更长。例如，如果从英国供应商购买，制造定子/转子铁芯的交货时间约为 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铜线，交货时间为 4 至 8 周。另一方面，中国制造商可以立即发货，因为铜线是现货。对于加工部件，我们将使用一家在中国设有业务的英国分包商，以缩短交货时间。鉴于上述零件的交货时间超出预期，我们希望请求允许使用中国分包商并直接从中国供应商采购材料。这将有助于显着缩短交货时间。出于物流原因，我们将在中国的临时车间制造电机、组装和调试测试台，然后将其运回英国。我们希望您理解，使用外国分包商和供应商对于该项目的成功至关重要。感谢您的考虑。