NOVEL ELECTRIC MACHINE DESIGN TOPOLOGIES FOR ELECTRIFIED TRANSPORTATION

近年来，电气化交通取得了长足的进步，包括空中、海上和地面应用。这些系统的核心是电机。用于牵引和辅助设备的机械技术类型因制造商和应用的不同而有很大差异。感应磁阻、永磁磁阻和开关磁阻都得到了广泛的应用，其中同步磁阻备受关注。功率密度和可靠性是船舶和飞机应用的关键问题。 该提案将涉及电气化运输机械设计的三个重要领域：a)使用新材料和制造技术研究电机的新拓扑结构，b)详细设计可变磁通电机，这是一种新的牵引候选设备，以及c)开发一种新型铁损测试仪，用于测量电机组装后的损耗。 在a)中，将研究永磁体的新型冷喷涂制造，以便可以在电机上打印任意形状和大小的磁体。三维磁通路径和减少齿槽扭矩的新形状是一些有待探索的领域。这相当于机器部件的3D打印。PI还在可变流量电机中提出了一个新的概念，并对这个初始想法提出了许多改进。在b)中，探索了开发可变磁通和常规永磁同步电机的混合电机的想法。我们的想法是保留使用外部脉冲使磁铁磁化和消磁的能力，从而提供磁通控制，同时缓解与低矫顽力相关的一些缺点，特别是使用电枢磁通时的无意消磁。PI在机器铁心损耗的测量和计算方面做了大量工作，c)解决了已经组装的机器的损耗这一关键问题，而不是叠片。PI之前所有关于铁心损耗的工作都是关于层合板的。然而，由于制造的结果，性能会发生显着变化，因此提出了一种新型测试仪来确定这些损失。 PI培训的HQP都被吸收到了世界各地的当地行业、政府实验室或学术职位。特别是当地工业的就业对加拿大有直接的好处。尤其是电气化交通领域对加拿大至关重要，是康科迪亚大学和魁北克愿景的一部分。

There has been considerable progress in electrified transportation in recent years, including air, marine and ground applications. The heart of these systems is the electrical machine. The types of machine technologies adopted for traction and auxiliaries varies considerably by manufacturer and application. Induction, permanent magnet and switched reluctance have all been adopted with the synchronous reluctance receiving serious attention. Power density and reliability are key issues for marine and aircraft applications. The proposal will address three important areas of machine design for electrified transportation: a) Investigation of new topologies of electrical machines using novel materials and manufacturing techniques, b) detailed design of the variable flux machine, a new candidate for traction and c) the development of a novel core loss tester to measure the losses of electrical machines after assembly. In a) novel cold spray manufacturing of permanent magnets will be investigated so that arbitrary shapes and sizes may be printed onto or into an electrical machine. 3-D flux paths and novel shapes to reduce cogging torque are some of the areas to be explored. This equates to 3-D printing of parts of the machine. The PI also proposed a new concept in variable flux machines and numerous advances to this initial idea are proposed. In b) the idea of developing a hybrid between a variable flux and regular PMSM is explored. The idea is to retain the ability to magnetize and demagnetize the magnet with an external pulse, thus providing flux control while alleviating some of the drawbacks associated with the low coercive force, in particular inadvertent demagnetization with armature flux. The PI has done considerable work in the measurements and calculation of core losses in machines and c) addresses the key question of losses in a machine that has already been assembled as opposed to the laminations. All the previous works on core losses by the PI have been on laminations. However significant changes in properties can occur as a result of manufacturing and hence a novel tester is proposed to determine these losses. The HQP trained by the PI have all been absorbed into local industry, government laboratories or academic positions around the world. The employment by local industry in particular has a direct benefit to Canada. The area of electrified transportation in particular is of vital importance to Canada and is part of the vision of Concordia University and Québec.