Applications of Reconfigurable Windings for Traction Motors and Drives

可重构绕组在牵引电机和驱动器中的应用

• 批准号: 2602665
• 金额: --
• 依托单位: University of Bath
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2602665
• 关键词: Applications; Reconfigurable; Windings; Traction; Motors

The objective is to design a stator winding reconfiguration system which is commercially and technically attractive. The concept of reconfiguring the stator windings depending on the motor operating point is widely known to offer performance advantages in terms of motor efficiency and torque density for a given mass of rare earth magnets. From work carried out in the summer project it is also shown that there is potential to reduce the specification of power electronics. Reconfiguration of windings between star and delta modes of operation is a common practice in industrial applications for start-up of induction machines, however commercial implementation of such systems for traction applications is almost non-existent owing to cost and packaging constraints. The objective of this research is to develop and demonstrate such a system which could be commercially relevant in automotive traction motor applications, and to evaluate its efficacy.The concept which will be developed within this project is based around a mechanical switching mechanism, as we believe this offers the only realistic route to achieve the cost requirement and make this technology commercially relevant for mainstream automotive applications. Previous work details semiconductor-based switching systems but are difficult to realise for under 200 euro for the power electronics alone, not considering control circuitry or cooling. In contrast, the mechanical switching solution uses abundantly available materials and inexpensive manufacturing techniques and so has excellent potential for cost optimisation. To realise the full benefits of this concept, it is desired to be integrated into the motor packaging. This will ensure that the total package is optimised for volume and mass and is preferable to integration within the inverter because it avoids the need for 12 cables connecting the motor and inverter. Despite multiple patents in this area no commercial product has yet reached the market, highlighting the difficulty of achieving a practical solution. We believe one of the key factors in producing a practical design is reducing the number of switches, or more precisely the number of electrical contact faces, since these are ultimately what limits the package volume. A key area in which the proposed solution progresses the state-of-the-art is in reducing the number of electrical contact faces by making maximum use of double-throw switches. A full review of possible switching mechanisms will be conducted as part of the work, including electrical schematics and actuation mechanisms, with a view to minimising cost and volume. This work will ultimately analyse such systems with the aim of establishing a design methodology which can be applied to the general case, to analytically trade off volume with performance, ensuring the project outputs are widely applicable.

目的是设计一个定子绕组重构系统，这是商业和技术上的吸引力。众所周知，根据电机工作点重新配置定子绕组的概念在给定质量的稀土磁体的电机效率和扭矩密度方面提供了性能优势。从夏季项目中进行的工作也表明，有可能降低电力电子技术的规格。绕组在星星和三角形操作模式之间的重新配置在用于启动感应电机的工业应用中是常见的实践，然而，由于成本和封装限制，用于牵引应用的这种系统的商业实现几乎不存在。本研究的目的是开发和展示这样一个系统，它可能是商业相关的汽车牵引电机应用，并评估其efficiency.The概念，这将是在这个项目中开发的基础上围绕机械开关机制，因为我们相信这提供了唯一现实的路线，以实现成本要求，使这项技术的商业相关的主流汽车应用。以前的工作详细介绍了基于晶闸管的开关系统，但很难实现低于200欧元的电力电子单独，不考虑控制电路或冷却。相比之下，机械开关解决方案使用大量可用的材料和廉价的制造技术，因此具有很好的成本优化潜力。为了实现这一概念的全部好处，希望将其集成到电机包装中。这将确保整个封装针对体积和质量进行优化，并且优于逆变器内的集成，因为它避免了连接电机和逆变器的12根电缆的需要。尽管在这一领域有多项专利，但尚未有商业产品进入市场，这凸显了实现实用解决方案的难度。我们认为，生产实用设计的关键因素之一是减少开关的数量，或者更准确地说，减少电接触面的数量，因为这些是最终限制封装体积的因素。所提出的解决方案在最新技术水平上取得进展的一个关键领域是通过最大限度地利用双掷开关来减少电接触面的数量。作为工作的一部分，将对可能的开关机制进行全面审查，包括电气原理图和驱动机制，以尽量减少成本和体积。这项工作将最终分析这些系统，目的是建立一种可应用于一般情况的设计方法，以分析权衡数量与性能，确保项目产出广泛适用。